Sensory System

Question 1

What are the 4 exteroceptive sensory systems

Answer 1

auditory
somatosensory
olfactory
gustatory

Question 2

Define sensation

Answer 2

the process of detecting stimuli

Question 3

Perception is

Answer 3

the higher order process of integrating, recognizing and interpreting patterns of sensations

Question 4

sensory systems are

Answer 4

hierarchical

Question 5

3 principles of sensory perception

Answer 5

functional segregation
system is not serial
parallel pathways, can skip levels

Question 6

each level of cerebral cortex has functionally distinct areas of analysis

Answer 6

functional segregation

Question 7

info flows over multple pathways in the neural network

Answer 7

parallel processing

Question 8

amplitude is

Answer 8

loudness

Question 9

frequency is

Answer 9

pitch

Question 10

complexity is

Answer 10

timbre

Question 11

pure tones are in our every day enviro

T/F?

Answer 11

Falsehoods

Question 12

fundamental frequency of a sound is the

Answer 12

highest common divisor

Question 13

basic pathway of sound perception

Answer 13

outer ear
tympanic membrane (ear drum)
Ossciles
Oval window
cochlea (snail)
Organ of Corti
Auditory nerve

Question 14

name dem ossciles

Answer 14

Malleus (hammer)
Incus (anvil)
Stapes (stirrups

MIS
HAS

Question 15

humans can parse out freq diffs of

Answer 15

.02%

Question 16

the auditory pathway is a __ rather than a single __

Answer 16

network
major

Question 17

the main stop between the primary auditory cortex and the ear is

Answer 17

the medial geniculate nuc of the thalamus

Question 18

the Aud-cortex is organized

Answer 18

on a gradient of low to high on it’s length
temporal components of sound freq over time

PERIODOPOTY

Question 19

Anterior audio pathway is

Answer 19

what and ID of sounds

Question 20

Posterior audio pathway is

Answer 20

where location

Question 21

audio and visual perception interact in the

Answer 21

posterior parietal cortex
PVC

Question 22

conductive deafness

Answer 22

damage to ossciles

Question 23

nerve deafness

Answer 23

damage to cochlea or aud nerve

Question 24

major cause of nerve deafness

Answer 24

hair cell receptor loss

Question 25

the layout of the auditory system is both

Answer 25

tonotopic and periodtopic

Question 26

the axons of the aud nerves synapse in the

Answer 26

ipsilateral cochlear nucelei

Question 27

many audio vis interactions are studied in the

Answer 27

post-parietal cor

Question 28

3 systems of the somatosensory cortex

Answer 28

exteroceptive (stim to skin) Prioproceptive (muscles, location in space, balance) Interoceptive (in ivivo, temp, BP, HR)

Question 29

Exteroceptive 3

Answer 29

mechanical thermal nociceptive

Question 30

name the 4 cutaneous receptors

Answer 30

free nerve ends (temp and pain) Pancian Corpusclese (onion layered, fast, sudden skin displacement) Merkels discs and Ruffini endings (adapt to slow constant pressure)

Question 31

two major somato pathways

Answer 31

Dorsal-column-medial lemniscus system (pain and temp) Anterolateral system

Question 32

who mapped the somatosensory cortex?

Answer 32

Penfield

Question 33

the somato cortex is laid out

Answer 33

somatotopically

Question 34

largest section for the primary Somato cortex is for

Answer 34

hands, lips, tongue

Question 35

S1 is largely

Answer 35

contralateral

Question 36

S2 gets info from

Answer 36

both sides of body

Question 37

how are the streams of the somato pathways similar to aud and vis?

Answer 37

dorsal stream - multi-sensory integrations and direction of attention and ventral stream perception of shapes

Question 38

a deficit in stereogenesis?

Answer 38

reduced ability to ID by touch

Question 39

Hemianopsia

Answer 39

a blind spot in visual field, losing detection of stim in that field. Hand in lap, low level, hand into vis field or holding object, much better

Question 40

Bimodal neurons for vis and somato are in

Answer 40

post-parietal

Question 41

: can’t ID by touch

Answer 41

ASTEREOGNOSIA

Question 42

can’t ID parts of ones own body

Answer 42

ASOMATOGNOSIA

Question 43

what is suggested by the results of the rubber hand illusion

Answer 43

that association cortex in the post-par and front lobes are involved with the bimodal neurons that work on touch and vis

Question 44

pain has no

Answer 44

cortical reception

Question 45

which area has analgesic effects on pain?

Answer 45

Periaquaductal grey