PSB 4240 Exam 2 | Questions and Answers The property that sets sensory receptors apart from other cells is their ability to _____. convert energy into nerve impulses The ability to discriminate individual stimuli is highest from surfaces with: small, closely spaced receptive fields Groups of int...
The property that sets sensory receptors apart from other cells is their ability to _____.
convert energy into nerve impulses
The ability to discriminate individual stimuli is highest from surfaces with:
small, closely spaced receptive fields
Groups of intervening synapses between a sensory receptor and sensory cortex are
known as:
neural relays
The common output of sensory transduction in all sensory systems is:
an action potential
Each sensory system employs multiple cortical regions, each consisting of _____ of the
sensory world.
multiple specialized maps
The axons of the _____ form the optic nerve.
retinal ganglion cells
The output fibers forming the optic nerve from the retina are axons of:
retinal ganglion cells
Where would an investigator most likely find neurons that are most capable of dealing
with information from the whole binocular visual field?
the visual cortex
In the lateral geniculate nucleus (LGN), layers _____ receive input from the
contralateral eye.
1,4 and 6
The axon terminal from LGN neurons project primarily to layer(s) _____ of area 17.
IV
The eardrum marks the boundary between the:
outer and middle ear
The appreciation of _____ is MOST closely related to the frequency of the sound
stimulus.
pitch
,The _____ is to hearing as the retina is to seeing.
organ of Corti
The peak of the traveling wave in the basilar membrane varies with the _____ of the
sound.
Frequency
According to tonotopic theory:
different points on the basilar membrane represent different sound frequencies.
Which of the following relays in the auditory system is the MOST peripheral (closest to
the ear)?
the cochlear nucleus
Ian Waterman's infection left him with a loss of all _____ due to a disorder of his
peripheral nerves.
Proprioception
A patient who cannot locate the position of her limbs in space unless she is looking at
them is suffering from a loss of:
Proprioception
Damage to the posterior column somatosensory pathway would be expected to disrupt
perception of:
fine touch and pressure
The sensory homunculus is a cortical representation of:
the body proportional to body surface sensitivity.
The area of the somatosensory cortex devoted to an area of the body surface is
proportional to the:
density of sensory receptors on the area
The primary deficit following damage to the semicircular canals would most probably be
a disturbance of:
sense of balance
Olfaction and gustation are known as the:
chemical senses
Brain-imaging studies suggest that the perception of flavor depends on activity in the:
orbitofrontal cortex
The integration of taste and smell stimuli results in the perception of:
Flavor
, The subjective experience that results from sensory processing is referred to as:
Perception
The Müller-Lyer illusion shows the importance of _____ in perception.
contextual cues
Receptors that respond to external stimuli are called _____; receptors that respond to
our own activity are called _____.
exteroceptive;introceptive
Neural _____ modify messages between the sensory receptors and the brain.
Relays
To communicate with the brain, the sensory systems use:
a common code to communicate, sending information to the brain with action potentials
The part of the visual system responsible for controlling pupil size is the _____.
Pretectum
Voluntary eye movements are largely regulated by neural circuits centered in the _____.
frontal eye fields
The axons of ganglion cells form the _____ nerve.
Optic
In the Brodmann system, primary visual cortex is given the number _____.
17
Pitch is MOST closely related to _____.
Frequency
The retina is to seeing as the _____ is to hearing.
organ of corti
Brodmann's area 41 is associated with which sense?
Audition
Pacinian corpuscles are receptors in the _____ sensory system.
Touch
The map on which the relative sensitivity of body parts are represented by size is called:
a homunculus
Otolith organs are associated with the sense of _____.
balance
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