Podcast
Questions and Answers
What primary function does acetylcholine serve?
What primary function does acetylcholine serve?
- Controlling motor function and learning
- Regulating mood and sleep cycles
- Influencing pleasure and reinforcement
- Enabling communication between nerve cells and muscles (correct)
What is the primary focus of studying the interaction of heredity and environment?
What is the primary focus of studying the interaction of heredity and environment?
- Analyzing drug effects on behavior
- Explaining the influence on behavior and mental processes (correct)
- Determining genetic predispositions only
- Understanding the nervous system functions
What condition is associated with low levels of acetylcholine?
What condition is associated with low levels of acetylcholine?
- Depression
- Alzheimer's disease (correct)
- Schizophrenia
- Parkinson's disease
Which subsystem is NOT part of the human nervous system?
Which subsystem is NOT part of the human nervous system?
Which substances can cause paralysis by blocking acetylcholine receptors?
Which substances can cause paralysis by blocking acetylcholine receptors?
How do the structures of typical neurons affect behavior?
How do the structures of typical neurons affect behavior?
What symptoms are associated with low levels of dopamine?
What symptoms are associated with low levels of dopamine?
What is a common effect of high levels of dopamine?
What is a common effect of high levels of dopamine?
What occurs during neural firing?
What occurs during neural firing?
What role does serotonin play in the body?
What role does serotonin play in the body?
What is a significant effect of psychoactive drugs on behavior?
What is a significant effect of psychoactive drugs on behavior?
What disorder is associated with low levels of serotonin?
What disorder is associated with low levels of serotonin?
Which structure in the brain is primarily responsible for regulating the sleep/wake cycle?
Which structure in the brain is primarily responsible for regulating the sleep/wake cycle?
How does sensation relate to behavior and mental processes?
How does sensation relate to behavior and mental processes?
What can excessive serotonin levels lead to?
What can excessive serotonin levels lead to?
What best describes neuroplasticity?
What best describes neuroplasticity?
What is the main reason for severing the corpus callosum in individuals with severe epilepsy?
What is the main reason for severing the corpus callosum in individuals with severe epilepsy?
Which hemisphere of the brain is primarily responsible for language and logical reasoning?
Which hemisphere of the brain is primarily responsible for language and logical reasoning?
What is agnosia?
What is agnosia?
What is contralateral hemispheric organization?
What is contralateral hemispheric organization?
Which of the following best describes consciousness?
Which of the following best describes consciousness?
What characterizes sleep?
What characterizes sleep?
Which hemisphere is associated with creativity and spatial awareness?
Which hemisphere is associated with creativity and spatial awareness?
During wakefulness, which of the following is true?
During wakefulness, which of the following is true?
What is the main role of glutamate in the brain?
What is the main role of glutamate in the brain?
Which of the following is a characteristic of psychoactive drugs?
Which of the following is a characteristic of psychoactive drugs?
What is an antagonist's effect on neural receptors?
What is an antagonist's effect on neural receptors?
How can an agonist enhance neurotransmitter effects?
How can an agonist enhance neurotransmitter effects?
What potential consequence can result from excessive glutamate in the brain?
What potential consequence can result from excessive glutamate in the brain?
Low levels of glutamate are associated with which of the following?
Low levels of glutamate are associated with which of the following?
How does substance P influence mood disorders?
How does substance P influence mood disorders?
Which drug is utilized after a traumatic brain injury to prevent memory loss?
Which drug is utilized after a traumatic brain injury to prevent memory loss?
What is the average duration of a human's circadian rhythm without external cues?
What is the average duration of a human's circadian rhythm without external cues?
Which hormone is primarily responsible for signaling the time to sleep?
Which hormone is primarily responsible for signaling the time to sleep?
What is jet lag primarily associated with?
What is jet lag primarily associated with?
What tool is used to measure different stages of sleep?
What tool is used to measure different stages of sleep?
What is a characteristic of NREM Stage 1 sleep?
What is a characteristic of NREM Stage 1 sleep?
Which of the following correctly describes shift work?
Which of the following correctly describes shift work?
What condition causes weakness in communication between nerves and muscles?
What condition causes weakness in communication between nerves and muscles?
Which neurotransmitter is known to increase the likelihood of a neuron firing an action potential?
Which neurotransmitter is known to increase the likelihood of a neuron firing an action potential?
How does a polysomnograph determine what sleep stage someone is in?
How does a polysomnograph determine what sleep stage someone is in?
What symptoms may occur during jet lag adjustment?
What symptoms may occur during jet lag adjustment?
What type of neurotransmitters decrease the likelihood of a neuron firing an action potential?
What type of neurotransmitters decrease the likelihood of a neuron firing an action potential?
Which of the following best describes the primary function of neurotransmitters?
Which of the following best describes the primary function of neurotransmitters?
Hormones differ from neurotransmitters in that they:
Hormones differ from neurotransmitters in that they:
Which neurotransmitter is primarily associated with mood regulation and impacts the brain's emotional state?
Which neurotransmitter is primarily associated with mood regulation and impacts the brain's emotional state?
Which neurotransmitter is primarily an inhibitory signal in the central nervous system?
Which neurotransmitter is primarily an inhibitory signal in the central nervous system?
What is the result of excessive glutamate activity in the brain?
What is the result of excessive glutamate activity in the brain?
Flashcards
Neurotransmitter
Neurotransmitter
A chemical messenger that transmits signals across the synapse between neurons or from neurons to other cells.
Synapse
Synapse
The space between two neurons where neurotransmitters are released and received.
Excitatory Neurotransmitter
Excitatory Neurotransmitter
A type of neurotransmitter that increases the likelihood of a neuron firing an action potential.
Inhibitory Neurotransmitter
Inhibitory Neurotransmitter
Signup and view all the flashcards
Hormone
Hormone
Signup and view all the flashcards
Myasthenia Gravis
Myasthenia Gravis
Signup and view all the flashcards
Neuromuscular Junction
Neuromuscular Junction
Signup and view all the flashcards
Acetylcholine
Acetylcholine
Signup and view all the flashcards
Heredity and Environment Interaction
Heredity and Environment Interaction
Signup and view all the flashcards
Nervous System
Nervous System
Signup and view all the flashcards
Neurons
Neurons
Signup and view all the flashcards
Neural Firing
Neural Firing
Signup and view all the flashcards
Psychoactive Drugs
Psychoactive Drugs
Signup and view all the flashcards
Brain
Brain
Signup and view all the flashcards
Sleep/Wake Cycle
Sleep/Wake Cycle
Signup and view all the flashcards
Acetylcholine (ACh)
Acetylcholine (ACh)
Signup and view all the flashcards
Dopamine
Dopamine
Signup and view all the flashcards
Serotonin
Serotonin
Signup and view all the flashcards
Dopamine and Schizophrenia
Dopamine and Schizophrenia
Signup and view all the flashcards
ACh and Muscle Function
ACh and Muscle Function
Signup and view all the flashcards
Dopamine and Parkinson's
Dopamine and Parkinson's
Signup and view all the flashcards
Serotonin and Depression
Serotonin and Depression
Signup and view all the flashcards
Serotonin Syndrome
Serotonin Syndrome
Signup and view all the flashcards
Agonist
Agonist
Signup and view all the flashcards
Antagonist
Antagonist
Signup and view all the flashcards
Glutamate
Glutamate
Signup and view all the flashcards
Substance P
Substance P
Signup and view all the flashcards
Substance P
Substance P
Signup and view all the flashcards
Glutamate Toxicity
Glutamate Toxicity
Signup and view all the flashcards
Namenda®
Namenda®
Signup and view all the flashcards
Circadian Rhythm
Circadian Rhythm
Signup and view all the flashcards
Jet Lag
Jet Lag
Signup and view all the flashcards
Shift Work
Shift Work
Signup and view all the flashcards
Polysomnograph
Polysomnograph
Signup and view all the flashcards
NREM Stage 1
NREM Stage 1
Signup and view all the flashcards
Insomnia
Insomnia
Signup and view all the flashcards
Narcolepsy
Narcolepsy
Signup and view all the flashcards
Corpus Callosotomy
Corpus Callosotomy
Signup and view all the flashcards
Left Hemisphere Functions
Left Hemisphere Functions
Signup and view all the flashcards
Right Hemisphere Functions
Right Hemisphere Functions
Signup and view all the flashcards
Agnosia
Agnosia
Signup and view all the flashcards
Contralateral Hemispheric Organization
Contralateral Hemispheric Organization
Signup and view all the flashcards
Consciousness
Consciousness
Signup and view all the flashcards
Sleep
Sleep
Signup and view all the flashcards
Wakefulness
Wakefulness
Signup and view all the flashcards
Study Notes
Biological Bases of Behavior
- This unit explores the connection between biological systems and mental processes.
- It examines how understanding biology can lead to healthier lives.
- The unit considers nature vs nurture, the interaction of heredity and environment in shaping behavior and mental processes.
Interaction of Heredity and Environment
- Genetics play a crucial role in predisposing individuals to certain traits or conditions.
- Environmental factors also influence outcomes.
- Evolutionary perspectives highlight how traits that enhance survival and reproduction are passed down.
- Natural selection is the process by which advantageous traits are more likely to be passed down.
- Examples of evolutionary perspectives include mate selection and fear responses to certain threats.
- The study of eugenics explores improving the genetic quality of the human population through selective breeding.
- Research methods like twin studies, family studies, and adoption studies are used to examine the influence of genetics and environment on traits and behaviors.
Overview of the Nervous System
- The nervous system is composed of the central nervous system (CNS) and the peripheral nervous system (PNS).
- The CNS comprises the brain and spinal cord.
- The PNS comprises the somatic nervous system and the autonomic nervous system.
- The autonomic nervous system is further divided into the sympathetic and parasympathetic systems.
The Neuron and Neural Firing
- Neurons are the basic building blocks of the nervous system.
- Glial cells provide support, nourishment, and protection to neurons.
- Neurons communicate with each other and other cells electrochemically.
- The resting potential is the electrical charge difference across a neuron's membrane when it is not actively sending a signal.
- Reaching a threshold triggers an action potential, a rapid change in the neuron's electrical charge.
- The all-or-nothing principle states an action potential occurs with the same intensity regardless of stimulus strength.
- The refractory period follows an action potential, preventing immediate repeated firing.
Psychoactive Drugs
- Psychoactive drugs affect brain activity, altering mood, perception, and behavior.
- Agonists mimic neurotransmitters or increase their release, enhancing their effects.
- Antagonists block receptors, reducing neurotransmitter effects.
- Reuptake inhibitors increase the amount of neurotransmitter available.
- Examples include caffeine, cocaine, alcohol, marijuana, and opiates.
- These drugs influence various neurotransmitters, such as dopamine, serotonin, GABA, and endorphins.
The Brain
- The brain comprises different structures and lobes, each with specialized functions.
- The brainstem controls essential life functions.
- The cerebellum coordinates motor control and balance.
- The thalamus acts as a sensory relay station.
- The hypothalamus regulates vital bodily functions.
- The pituitary gland regulates hormone release.
- The hippocampus aids in memory formation.
- The amygdala processes emotions, especially fear and aggression.
- The corpus callosum connects the hemispheres of the brain allowing both sides to communicate.
- Other structures include the frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
- Neuroplasticity, the ability of the brain to reorganize and adapt, is crucial for learning and recovery.
Sleep
- Sleep is a state of rest for the body and mind, characterized by reduced consciousness and lowered responsiveness.
- The circadian rhythm is the body's internal 24-hour cycle that affects sleep-wake patterns.
- Sleep stages include REM (rapid eye movement) and non-REM stages.
- REM sleep is associated with dreaming.
- Sleep deprivation can affect cognitive function and physical health.
- Disordered sleep patterns (insomnia, narcolepsy) can be problematic.
Sensation
- Sensation converts sensory stimuli into neural impulses.
- Sensory receptors detect various stimuli like light, sound, touch, taste, and smell.
- Transduction converts physical stimuli into electrical signals within the sensory receptor.
- Thresholds involve the minimum intensity needed for detection or the difference perceptible between stimuli.
- Certain stimuli are amplified or attenuated by sensory adaptation.
- Vision, hearing, taste, and smell are examples of specialized sensory systems.
Vision
- Rods and cones are photoreceptor cells, converting light into electrical signals in the retina.
- The fovea is the central area of the retina with the highest visual acuity (sharpness).
- Color perception is based on the trichromatic and opponent-process theories.
Hearing
- Sound waves are vibrations that stimulate the hair cells in the cochlea.
- The place theory relates pitch to the region of the basilar membrane stimulated.
- The volley theory relates frequency to the firing rate of auditory neurons.
Chemical and Bodily Sensations
- Chemical senses, such as taste and smell (olfaction), detect chemicals in the environment.
- Taste receptors are located on the tongue identifying chemicals as sweet, sour, salty, bitter, or savory.
- Olfaction, the sense of smell, has a direct connection to memory and emotion.
- Somatosensation (touch) and kinesthesia, the sense of body movement, help in our understanding of the environment.
- Pain is detected by nociceptors and the gate-control theory explains how non-painful touch can reduce pain.
- Vestibular sense (balance) is a sense that relays whether the body is moving or stationary, detecting gravity and movement.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.