30 Questions
What is the approximate sensitivity of human hearing under optimum conditions?
One-twentieth the diameter of an atom
How small a difference can humans detect between two sounds?
1/30 the interval between two piano notes
What aspect of sound waves is related to intensity?
Amplitude
In physics and psychology, what are sound waves?
Vibrations in air, water, or other media
What is pitch related to?
Frequency
How do humans typically attend to hearing according to the text?
To extract useful information
What is the function of taste receptors?
Convert chemical stimuli into taste sensations
How many taste buds does an average person contain?
2,000 to 10,000
What can happen if the chorda tympani is anesthetized according to the text?
Leads to the loss of taste in the anterior part of the tongue
Which region of the brain is NOT mentioned as being involved in taste coding?
Prefrontal cortex
What is a possible consequence of losing taste perception in the anterior part of the tongue?
Taste 'phantoms'
Which nerve is involved in transmitting taste information to various brain regions?
Chorda tympani
What brain areas respond to the pleasantness of sensations?
Cingulate gyrus and insular cortex
Which type of axons can convey emotional aspects of touch even without conscious sensation?
Unmyelinated axons
What is the primary somatosensory cortex crucial for?
Touch experiences
Which type of axons carry pain information and conduct impulses relatively slowly?
Unmyelinated axons
What happens when there is damage to myelinated somatosensory axons below the nose?
Impair conscious touch perception while retaining emotional aspects
What is closely linked to pain according to the text?
Depression
What role do pheromones play in human interactions based on the text?
They play a subtle role in hormonal responses and behavioral cues.
What phenomenon is described as the stimulation of one sense leading to the perception of another?
Synesthesia
What does the occurrence of synesthesia in families often alongside absolute pitch abilities suggest?
Genetic factors may influence the development of synesthesia.
What is a characteristic of synesthetic perceptions based on the text?
They align with misinterpretations and occur in the cerebral cortex.
What can trigger synesthetic experiences according to the text?
Seeing a word that triggers a color before its actual recall.
How do synesthetic colors extend beyond sensory limitations as mentioned in the text?
By being experienced by individuals with color vision deficiency.
Based on the text, what is a limitation of the Frequency Theory for explaining how we hear high frequencies?
Neurons cannot fire at frequencies higher than 1000 Hz.
What is the role of the basilar membrane in the Current Theory of hearing?
Varying in stiffness to identify pitch.
How does the text describe the relationship between sound waves and action potentials in the Current Theory?
Phase-locking action potentials to the sound wave peaks.
What is the Volley Principle of Pitch Discrimination as discussed in the text?
The auditory nerve produces volleys of impulses up to about 4000 Hz.
In the context of hearing high frequencies, what challenge arises according to Volley Principle of Pitch Discrimination?
Staggered volleys of impulses struggle to match sound wave pace.
How does the text describe the mechanism for hearing still higher frequencies beyond 4000 Hz?
Involving a varying basilar membrane at its base.
Explore the somatosensation process in the central nervous system, focusing on the specialization of different strips in the somatosensory cortex and the role of the primary somatosensory cortex in touch experiences. Understand how damage to myelinated somatosensory axons can impact touch perception.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
