Deck 8: Extension: A - Organization of the Sensory Systems

Question 1

According to tonotopic theory:

A) each hair cell responds to a different pitch.
B) different points on the basilar membrane represent different intensities of sound.
C) the basilar membrane is uniform in its response to different sound frequencies.
D) different points on the basilar membrane represent different sound frequencies.

Answer 1

different points on the basilar membrane represent different sound frequencies.

Question 2

Which of the following relays in the auditory system is the MOST peripheral (closest to the ear)?

A) the primary auditory cortex
B) the inferior colliculus
C) the medial geniculate
D) the cochlear nucleus

Answer 2

the cochlear nucleus

Question 3

Each sensory system employs multiple cortical regions, each consisting of _____ of the sensory world.

A) a single, exact map
B) multiple identical maps
C) multiple specialized maps
D) a single, abstract map

Answer 3

multiple specialized maps

Question 4

The axons of the _____ form the optic nerve.

A) bipolar cells
B) lateral geniculate cells
C) amacrine cells
D) retinal ganglion cells

Question 5

A patient who cannot locate the position of her limbs in space unless she is looking at them is suffering from a loss of:

A) enteroception.
B) hapsis.
C) nociception.
D) proprioception.

Question 6

The output fibers forming the optic nerve from the retina are axons of:

A) bipolar neurons.
B) retinal ganglion cells.
C) rods.
D) cones.

Question 7

The appreciation of _____ is MOST closely related to the frequency of the sound stimulus.

A) loudness
B) pitch
C) harmonics
D) location

Question 8

The eardrum marks the boundary between the:

A) outer and middle ear.
B) middle and inner ear.
C) semicircular canals and cochlea.
D) outer ear and the stirrup.

Question 9

The axon terminal from LGN neurons project primarily to layer(s) _____ of area 17.

A) IV
B) II, III
C) V
D) VI

Question 10

The ability to discriminate individual stimuli is highest from surfaces with:

A) large, widely spaced receptive fields.
B) large, closely spaced receptive fields.
C) small, widely spaced receptive fields.
D) small, closely spaced receptive fields.

Question 11

Where would an investigator most likely find neurons that are most capable of dealing with information from the whole binocular visual field?

A) the superior colliculus
B) the visual cortex
C) the lateral geniculate nucleus
D) the pulvinar nucleus

Question 12

Ian Waterman's infection left him with a loss of all _____ due to a disorder of his peripheral nerves.

A) hearing
B) vision
C) proprioception
D) sensory input

Question 13

The _____ is to hearing as the retina is to seeing.

A) organ of Corti
B) round window
C) oval window
D) cochlea

Question 14

In the lateral geniculate nucleus (LGN), layers _____ receive input from the contralateral eye.

A) 2, 3, and 5
B) 1, 4, and 6
C) 1, 3, and 5
D) 2, 4, and 6

Question 15

The peak of the traveling wave in the basilar membrane varies with the _____ of the sound.

A) intensity
B) location
C) frequency
D) duration

Question 16

The property that sets sensory receptors apart from other cells is their ability to _____.

A) transmit messages to other cells
B) receive input from other cells
C) produce specialized chemicals
D) convert energy into nerve impulses

Question 17

The common output of sensory transduction in all sensory systems is:

A) an action potential.
B) dopamine release.
C) occipital cortex activation.
D) consciousness.

Question 18

Groups of intervening synapses between a sensory receptor and sensory cortex are known as:

A) sensory ganglia.
B) neural relays.
C) sensory switches.
D) relay ganglia.

Question 19

The sensory homunculus is a cortical representation of:

A) the body proportional to body surface area.
B) the body proportional to body surface sensitivity.
C) the body proportional to muscle number.
D) conscious bodily sensations.

Question 20

Damage to the posterior column somatosensory pathway would be expected to disrupt perception of:

A) pain and temperature.
B) fine touch and pain.
C) temperature and pressure.
D) fine touch and pressure.

Question 21

Brain - imaging studies suggest that the perception of flavor depends on activity in the:

A) lingual gyrus.
B) amygdala.
C) orbitofrontal cortex.
D) temporal cortex.

Question 22

The primary deficit following damage to the semicircular canals would most probably be a disturbance of:

A) voluntary actions.
B) sense of balance.
C) pitch discrimination.
D) sense of smell.

Question 23

Olfaction and gustation are known as the:

A) papillary senses.
B) affective senses.
C) chemical senses.
D) solitary senses.

Question 24

The subjective experience that results from sensory processing is referred to as:

A) sensation.
B) perception.
C) introspection.
D) intellection.

Question 25

The area of the somatosensory cortex devoted to an area of the body surface is proportional to the:

A) density of sensory receptors on the area.
B) size of the area relative to the rest of the body.
C) number of somatotopic maps for that region of the body.
D) the number of relay nuclei between the body surface and cortex.

Question 26

The integration of taste and smell stimuli results in the perception of:

A) flavor.
B) saltiness.
C) odorants.
D) body posture.

Question 27

The Müller - Lyer illusion shows the importance of _____ in perception.

A) concentration
B) sensation
C) contextual cues
D) accommodation