Podcast
Questions and Answers
Which visual cue relies on the eyes being approximately 2.5 inches apart?
Which visual cue relies on the eyes being approximately 2.5 inches apart?
- Retinal disparity (correct)
- Motion parallax
- Convergence
- Relative height
When viewing objects far away, which of the following eye muscle states is most likely?
When viewing objects far away, which of the following eye muscle states is most likely?
- Eyes converge
- Eyes contract
- Eyes are relaxed (correct)
- Eyes diverge
Which of the following sensory experiences does NOT typically undergo sensory adaptation?
Which of the following sensory experiences does NOT typically undergo sensory adaptation?
- Sight in response to bright light
- Pain from a persistent injury (correct)
- Smell of a strong perfume
- Hearing due to loud noise
According to Weber's Law, if the just noticeable difference for a 10 lb weight is 1 lb, what is the just noticeable difference for a 20 lb weight?
According to Weber's Law, if the just noticeable difference for a 10 lb weight is 1 lb, what is the just noticeable difference for a 20 lb weight?
According to signal detection theory, what term refers to a case where a signal is present, and the participant correctly identifies it?
According to signal detection theory, what term refers to a case where a signal is present, and the participant correctly identifies it?
A participant consistently reports detecting a signal, even when no signal is present. According to signal detection theory, what type of strategy is this participant employing?
A participant consistently reports detecting a signal, even when no signal is present. According to signal detection theory, what type of strategy is this participant employing?
Which of the following describes the role of prior knowledge in perception?
Which of the following describes the role of prior knowledge in perception?
Which Gestalt principle explains why we see a series of dots arranged in a line as a single unit?
Which Gestalt principle explains why we see a series of dots arranged in a line as a single unit?
What is the function of the lens in the eye?
What is the function of the lens in the eye?
What is the role of the retinal ganglion cells?
What is the role of the retinal ganglion cells?
In the phototransduction cascade, what molecule causes the closing of Na+ channels in rods?
In the phototransduction cascade, what molecule causes the closing of Na+ channels in rods?
Why do cones detect color while rods detect light?
Why do cones detect color while rods detect light?
Which area of the retina has the highest visual acuity?
Which area of the retina has the highest visual acuity?
What is the role of the organ of Corti in auditory transduction?
What is the role of the organ of Corti in auditory transduction?
What structures are located in the inner ear?
What structures are located in the inner ear?
How can the brain distinguish different frequencies of sound?
How can the brain distinguish different frequencies of sound?
What is the primary purpose of a cochlear implant?
What is the primary purpose of a cochlear implant?
What type of somatosensory receptor is responsible for detecting texture?
What type of somatosensory receptor is responsible for detecting texture?
What is the difference between kinaesthesia and proprioception?
What is the difference between kinaesthesia and proprioception?
What does increased myelination do to action potential conductance?
What does increased myelination do to action potential conductance?
What role does the orbitofrontal cortex play in smell?
What role does the orbitofrontal cortex play in smell?
What structure separates the olfactory epithelium from the brain?
What structure separates the olfactory epithelium from the brain?
What type of senses can cause a G-protein mediated reaction?
What type of senses can cause a G-protein mediated reaction?
Which of the following is NOT a stage of sleep?
Which of the following is NOT a stage of sleep?
What type of activity is reduced during REM sleep, which results logic seeming abnormal?
What type of activity is reduced during REM sleep, which results logic seeming abnormal?
What is a potential benefit of meditation?
What is a potential benefit of meditation?
Which of the following drugs increases GABA activity?
Which of the following drugs increases GABA activity?
Amphetamines affect levels of what neurotransmitter?
Amphetamines affect levels of what neurotransmitter?
What causes the body to lower its heartrate in response to taking amphetamines?
What causes the body to lower its heartrate in response to taking amphetamines?
Which route of drug entry creates more addictive potential?
Which route of drug entry creates more addictive potential?
What area of the brain releases dopamine when rewards are obtained?
What area of the brain releases dopamine when rewards are obtained?
In treating drug dependence, what is the function of methadone?
In treating drug dependence, what is the function of methadone?
What happens to attention if attempting to do more than one thing at a time?
What happens to attention if attempting to do more than one thing at a time?
In Broadbent's Early Selection Theory, at what stage is the meaning of words assigned?
In Broadbent's Early Selection Theory, at what stage is the meaning of words assigned?
According to the spotlight model of attention, what allows you to notice your own name when primed.
According to the spotlight model of attention, what allows you to notice your own name when primed.
What is the method of loci and how does it improve memory?
What is the method of loci and how does it improve memory?
What is one of the reasons for forgetting and how can we overcome this.
What is one of the reasons for forgetting and how can we overcome this.
What is long-term potentiation?
What is long-term potentiation?
In Piaget's stages of cognitive development, what does it mean to not understand object permanence.
In Piaget's stages of cognitive development, what does it mean to not understand object permanence.
What is the Wernicke's area is damaged during communication?
What is the Wernicke's area is damaged during communication?
What is responsible for a person's fight or flight responses?
What is responsible for a person's fight or flight responses?
After learning about a friend diagnosed with a mental disorder, a personal might feel pity because of what type of cause?
After learning about a friend diagnosed with a mental disorder, a personal might feel pity because of what type of cause?
What type of visual cue is convergence?
What type of visual cue is convergence?
If an object appears to overlap another, what monocular cue could you use to understand that the object in front is closer?
If an object appears to overlap another, what monocular cue could you use to understand that the object in front is closer?
Which of the following is an example of sensory adaptation?
Which of the following is an example of sensory adaptation?
What does Weber's Law suggest about the relationship between the intensity of a stimulus and its just noticeable difference (JND)?
What does Weber's Law suggest about the relationship between the intensity of a stimulus and its just noticeable difference (JND)?
If a person can detect a stimulus 60% of the time, how would this level be classified?
If a person can detect a stimulus 60% of the time, how would this level be classified?
During linear acceleration, what structures are responsible for detecting movement?
During linear acceleration, what structures are responsible for detecting movement?
What sensation occurs as a result of endolymph continuing to move in the semicircular canals even when we are no longer spinning?
What sensation occurs as a result of endolymph continuing to move in the semicircular canals even when we are no longer spinning?
According to Signal Detection Theory, a 'liberal' strategy in decision-making is most likely to:
According to Signal Detection Theory, a 'liberal' strategy in decision-making is most likely to:
How is the strength of a signal (d') determined in signal detection theory?
How is the strength of a signal (d') determined in signal detection theory?
What type of processing is exemplified when prior knowledge shapes perception, influencing how we interpret incoming sensory information?
What type of processing is exemplified when prior knowledge shapes perception, influencing how we interpret incoming sensory information?
How would something like olympic rings be processed?
How would something like olympic rings be processed?
What aspect of the eye is a transparent thick sheet of tissue?
What aspect of the eye is a transparent thick sheet of tissue?
Which structure of the eye is responsible for determining eye color?
Which structure of the eye is responsible for determining eye color?
What part of the eye provides jelly-like substance to provide pressure to the eyeball?
What part of the eye provides jelly-like substance to provide pressure to the eyeball?
In the retina, what structures are completely covered in cones, and have no rods?
In the retina, what structures are completely covered in cones, and have no rods?
What two types of cells connect when a rod is turned off by light?
What two types of cells connect when a rod is turned off by light?
What two molecules need to bind so that a Na+ channel can open and allow Na+ ions to come into the cell?
What two molecules need to bind so that a Na+ channel can open and allow Na+ ions to come into the cell?
How do rods and cones differ considering their sensitivity and ability to detect color?
How do rods and cones differ considering their sensitivity and ability to detect color?
A person who has no axons in the way of light would have light hitting what part of their eye?
A person who has no axons in the way of light would have light hitting what part of their eye?
Why should you break up frequency for sound?
Why should you break up frequency for sound?
What are the three bones that vibrate in response to sound waves called?
What are the three bones that vibrate in response to sound waves called?
What structure pushes fluid around the cochlea, and is attached to the stapes?
What structure pushes fluid around the cochlea, and is attached to the stapes?
What structure contains the basilar and tectorial membranes?
What structure contains the basilar and tectorial membranes?
How can signals be sent to the auditory nerve?
How can signals be sent to the auditory nerve?
What part of the basilar membrane is activated by sounds of varying frequencies?
What part of the basilar membrane is activated by sounds of varying frequencies?
A device that converts electrical impulses into neural impulses will send a signal to what part of the brain?
A device that converts electrical impulses into neural impulses will send a signal to what part of the brain?
Which of the following sensations does not include temperature, pressure, pain and position, but helps with cognitive awareness of body in space?
Which of the following sensations does not include temperature, pressure, pain and position, but helps with cognitive awareness of body in space?
What receptor relies on heat in order for you to sense changes in temperature?
What receptor relies on heat in order for you to sense changes in temperature?
Touching a hot stove would recruit what type of fiber first?
Touching a hot stove would recruit what type of fiber first?
What separates the olfactory epithelium from the brain?
What separates the olfactory epithelium from the brain?
A person with damage to their amygdala wouldn't be able to activate what system?
A person with damage to their amygdala wouldn't be able to activate what system?
Salty and sour tastes rely on what?
Salty and sour tastes rely on what?
What occurs during sleep spindles?
What occurs during sleep spindles?
Which stage of sleep causes most other muscles to be paralyzed?
Which stage of sleep causes most other muscles to be paralyzed?
What combination of waves is seen during REM sleep that is similar to being awake?
What combination of waves is seen during REM sleep that is similar to being awake?
What hormone is produced in the pineal gland, and controls circadian rhythm?
What hormone is produced in the pineal gland, and controls circadian rhythm?
According to Sigmund Freud, what is the actual storyline of a dream called?
According to Sigmund Freud, what is the actual storyline of a dream called?
Sleep deprivation causes the body to produce more cortisol and the hunger hormone, what is the specific outcome?
Sleep deprivation causes the body to produce more cortisol and the hunger hormone, what is the specific outcome?
What is the difference between central and obstructive sleep apnea?
What is the difference between central and obstructive sleep apnea?
What is the goal of meditation?
What is the goal of meditation?
Compared to normal light relaxation, what activity is shown from more alpha brainwaves?
Compared to normal light relaxation, what activity is shown from more alpha brainwaves?
Which of the following functions is NOT lowered by depressants?
Which of the following functions is NOT lowered by depressants?
What is the result of homeostasis if someone were to take amphetamines?
What is the result of homeostasis if someone were to take amphetamines?
If an individual can detect a stimulus 55% of the time, but requires a stronger stimulus to detect a change in intensity, this indicates what about their absolute and difference thresholds?
If an individual can detect a stimulus 55% of the time, but requires a stronger stimulus to detect a change in intensity, this indicates what about their absolute and difference thresholds?
According to Weber's Law, if the Just Noticeable Difference (JND) for a stimulus of intensity X is Y, what change would cause the JND to double?
According to Weber's Law, if the Just Noticeable Difference (JND) for a stimulus of intensity X is Y, what change would cause the JND to double?
If a person can detect a weak signal more frequently when they are expecting it, but also reports more false alarms, which aspect of signal detection theory is being demonstrated?
If a person can detect a weak signal more frequently when they are expecting it, but also reports more false alarms, which aspect of signal detection theory is being demonstrated?
Which of the following accurately describes the relationship between monocular cues and binocular cues in depth perception?
Which of the following accurately describes the relationship between monocular cues and binocular cues in depth perception?
How are the structures in the semicircular canals and otolithic organs used together in balance and spatial orientation?
How are the structures in the semicircular canals and otolithic organs used together in balance and spatial orientation?
After a stroke, a patient has difficulty understanding speech but can still produce fluent, nonsensical speech. This indicates damage to which brain area and affects what bundle of nerves?
After a stroke, a patient has difficulty understanding speech but can still produce fluent, nonsensical speech. This indicates damage to which brain area and affects what bundle of nerves?
What explains the observation that someone who is skilled at a task is sometimes unable to complete it if being observed?
What explains the observation that someone who is skilled at a task is sometimes unable to complete it if being observed?
How does cognitive behavioral therapy (CBT) and motivational interviewing address addiction?
How does cognitive behavioral therapy (CBT) and motivational interviewing address addiction?
According to the Elaboration Likelihood Model, what factor leads somebody to deep process a message?
According to the Elaboration Likelihood Model, what factor leads somebody to deep process a message?
When examining a patient, what would indicate someone's cognitive dissonance?
When examining a patient, what would indicate someone's cognitive dissonance?
Flashcards
Visual Cues Categories
Visual Cues Categories
Depth, Form, Motion, Constancy
Retinal Disparity
Retinal Disparity
Eyes 2.5 inches apart provide two slightly different retinal images.
Convergence
Convergence
Eyes relax for distant objects, contract for close objects.
Monocular Cues
Monocular Cues
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Constancy
Constancy
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Hearing Adaptation
Hearing Adaptation
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Touch Adaptation
Touch Adaptation
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Smell Adaptation
Smell Adaptation
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Proprioception Adaptation
Proprioception Adaptation
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Sight Adaptation
Sight Adaptation
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Weber's Law
Weber's Law
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Absolute Threshold
Absolute Threshold
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Influences on Absolute Threshold
Influences on Absolute Threshold
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Subliminal Stimuli
Subliminal Stimuli
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Semicircular Canals
Semicircular Canals
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Otolithic Organs
Otolithic Organs
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Signal Detection Theory
Signal Detection Theory
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Signal Strength (d')
Signal Strength (d')
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Strategy (c) in SDT
Strategy (c) in SDT
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Bottom-up Processing
Bottom-up Processing
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Top-down Processing
Top-down Processing
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Gestalt Principles
Gestalt Principles
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Similarity
Similarity
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Pragnanz
Pragnanz
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Proximity
Proximity
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Continuity
Continuity
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Closure
Closure
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Eye Structure Layers
Eye Structure Layers
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Conjunctiva
Conjunctiva
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Cornea
Cornea
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Anterior Chamber
Anterior Chamber
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Pupil
Pupil
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Lens
Lens
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Suspensory Ligaments
Suspensory Ligaments
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Posterior Chamber
Posterior Chamber
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Vitreous Chamber
Vitreous Chamber
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Macula
Macula
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Fovea
Fovea
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Choroid
Choroid
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Sclera
Sclera
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Sensation
Sensation
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Light
Light
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Light Steps
Light Steps
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Rods
Rods
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Rods
Rods
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Cones
Cones
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Fovea
Fovea
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Phototransduction
Phototransduction
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Transducin
Transducin
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Phosphodiesterase
Phosphodiesterase
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Rods
Rods
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Cones
Cones
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Blind Spot
Blind Spot
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Feature Detection
Feature Detection
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Parallel Processing
Parallel Processing
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Audition Needs
Audition Needs
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Sound wave
Sound wave
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Outer Ear
Outer Ear
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Middle Ear
Middle Ear
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Inner Ear
Inner Ear
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Stapes
Stapes
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Organ of Corti structure
Organ of Corti structure
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Hair Bundle
Hair Bundle
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Tip Links
Tip Links
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Potassium Influx
Potassium Influx
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Brain
Brain
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Basilar Tuning
Basilar Tuning
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Cochlear Implant
Cochlear Implant
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Somatosensation
Somatosensation
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Adaptation
Adaptation
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Adaptation Important
Adaptation Important
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Amplification
Amplification
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Homunculus
Homunculus
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Proprioception
Proprioception
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Kinesthesia
Kinesthesia
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3 types of fibres
3 types of fibres
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Smell's Role in Taste
Smell's Role in Taste
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Smell
Smell
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Olfactory
Olfactory
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Pheromones
Pheromones
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Gustation
Gustation
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Receptor Axon
Receptor Axon
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range from
range from
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Hypnagonic Hallucinations
Hypnagonic Hallucinations
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N1
N1
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Sleep Spindles
Sleep Spindles
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K-Complexes
K-Complexes
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Rapid Eye
Rapid Eye
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Hhythms
Hhythms
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REM
REM
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Freud
Freud
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Evolutionary
Evolutionary
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flexibility to
flexibility to
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Freud
Freud
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the of Synthestis Hypothesis
the of Synthestis Hypothesis
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people can deprivation,
people can deprivation,
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obesity
obesity
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can antidepressants process REM
can antidepressants process REM
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Ttrack
Ttrack
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sleeplessness sleep
sleeplessness sleep
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Narcolepsy help
Narcolepsy help
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Transmitter its to is
Transmitter its to is
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Apnea 1
Apnea 1
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N3
N3
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talking/sleep
talking/sleep
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ariselated Problems,
ariselated Problems,
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that obstruct with to and,
that obstruct with to and,
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Study Notes
Sensory Perception: Processing the Environment
- Sensory perception involves translating environmental information into useful signals
- Visual cues provide information about depth, form, motion, and constancy
Visual Cues
- Divided into binocular and monocular categories
Binocular Cues
- Involve both eyes
- Retinal disparity occurs because eyes are 2.5 inches apart
- Convergence involves relaxed eye muscles for distant objects and contracted eye muscles for close ones
Monocular Cues
- Require only one eye
- Relative size is deducing size with one eye and interposition (overlap) involves assuming an overlapped object is behind
- Relative height says things higher are farther away and involves shading and contour to perceive form
- Motion parallax says things farther away move slower
- Constancy is the perception of objects as unchanging, even if retinal images differ, includes size, shape and color constancy
Sensory Adaptation
- Occurs when sensory receptors become less sensitive to constant stimuli
- Hearing adapts the inner ear muscle when there is a higher noise
- Touch temperature receptors will become desensitized, as well as smell receptors to molecules
- Proprioception allows mice raised upside down to accommodate and flip over
- Sight adapts by down regulating light, constricting the pupils and desensitizing rods and cones to light, and by upregulating dark through pupil dilation
Weber's Law and Just Noticeable Difference (JND)
- Refers to the smallest change in the intensity of a stimulus that a person can detect, also known as the just noticeable difference (JND)
- A 2 vs. 2.05 lb weight feels the same, but a 2 vs. 2.2 lb weight difference becomes noticeable
- Taking a 5 lb weight, might not notice 5.2 lb, but 5.5 lb is noticeable
- I is the intensity of the stimulus and delta I is the JND
- The Weber's Law Equation delta I/I = k can predict a linear relationship between incremental threshold and background intensity, with delta I equaling Ik
Absolute Threshold of Sensation
- The minimum stimulus intensity needed to detect a particular stimulus is the absolute threshold
- Stimuli is detected 50% of the time, and differences exist between individuals
- The JND and the difference threshold isn't the same, as JND is the smallest difference that can be detected 50% of the time
- Influenced by many factors and psychological states, expectations, experience, motivation and alertness
- Subliminal stimuli is that below the absolute threshold
The Vestibular System: Balance and Spatial Orientation
- Focus on the inner ear, mainly the semicircular canals that filled with endolymph that shifts
- Shift of the endolymph helps detect the direction and strength of head movements
- Otolithic organs including the utricle and saccule, detect linear acceleration and head position using calcium crystals attached to hair cells
- Crystal shifts in viscous gel pull on hair cells to trigger AP
- Vertigo and dizziness can be related
- Endolymph doesn't stop spinning when movement stops so tricks the brain and creates the feeling of dizziness
Signal Detection Theory:Decision-Making Under Uncertainty
- Signal detection identifies discerning between important stimuli and unimportant noise
- Origins in sonar like a small fish versus large whale
- Role in psychology uses a traffic light example
- Hit describes when a signal is present and one says yes, miss describes when a signal is present and one says no
- False alarm describes when a signal is absent and one says yes, correct rejection describes when a signal is absent and one says no
- Variables in the theory entail signal strength, d', and strategy, c
- Strength can define hit and miss rates with a strong signal more likely to be a hit
- 2 strategies for processing include conservative, always say no unless 100% sure, or liberal, always say yes
- For any signal, have noise distribution and signal distribution graphs
- The difference between noise distribution and signal distribution means are used to detect the strength level
- The X-axis represents intensity
- The strategy C can be expressed via choice of what threshold to deem as necessary to say Y vs N. Examples include Beta, D, C
- C strategy is an ideal observer optimizing both miss and false alarm rates
- Beta, set value of threshold to the ratio of height of signal distribution to noise distributions
Visual Processing: Bottom-Up vs. Top-Down
- Bottom-up processing occurs when a stimulus drives perception
- Sensory information is processed as it enters.
- Top-Down occurs when background knowledge influences perception
- Cognition applies what is known and to expect and fill in blanks.
Gestalt Principles
- Attempt to explain how we perceive things
- Similarity suggests that items similar to one another are grouped together.
- Pragnanz suggests that reality is often organized or reduced to simplest form.
- Proximity says that objects that are close are grouped together.
- Continuity suggests that lines are seen as following smoothest path.
- Closure suggests that objects grouped together are seen as a whole.
Structure of the Eye: Sight (Vision)
- Conjunctiva is the first layer that light hits.
- Cornea is transparent thick tissue sheet anterior 1/6th.
- Anterior chamber has aqueous humour to maintain eyeball shape.
- Pupil is hole made by iris.
- Lens bends light to the back of the eyeball.
- Suspensory ligaments attach to a ciliary muscle which combines to create the ciliary Body.
- Body secrets the aqueous humor.
- Posterior chamber sits behind the ciliary muscle and contains aqueous humor.
- Vitreous chamber has vitreous humour, a jelly-like substance that provides pressure to the eyeball.
- Retina is filled with photoreceptors , macula and fovea which are special parts that are rich in cones.
- Choroid with pigmented black cells in humans has a network of blood vessels
- Sclera with whites in the eye are fibrous tissue which covers posterior 5/6th of the eyeball
- Sclera is also an attachment point for muscles.
Visual Sensory Information
- Neural impulses can be obtained from light by a photoreceptor
- Light is an electromagnetic wave in a large spectrum between 400nm (violet) and 700nm (red)
- Sun is a source of light
- Light enters the pupil through the rods and cones on the retina
- 120 million rods exist for night vision
- Light hits rod that turns off, activating a bipolar cell
- Then the bipolar cell activates a retinal ganglion cell to the optic nerve and into the brain
- 6-7 million cones with three types including red, green, and blue, focused in the fovea
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