Association Cortex Lec28 Flashcards Preview

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Flashcards in Association Cortex Lec28 Deck (33)
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1
Q

Major Association Cortices (3)

A

1. temporal (what pathway)

2. parietal (where/when pathway)

3. frontal

2
Q

__ association cortex is involved with Auditory prosody, syntax

A

temporal

3
Q

frontal association cortex is involved with (3) 

A

Spatial, object working memory
! Planning
! Withholding responses

4
Q

Association Cortex:

what layers do inputs come into? 

A

 come in at all levels, except inputs
from the thalamus only go to layer 4
(the granular layer)

5
Q

where does input to the association cortex from the thalamus come into?

A

only layer 4

6
Q

Outputs from layers 2 and 3 go to 

A

 other cortical areas

7
Q

layer 2 or 3  cells are bigger, can go
to opposite hemisphere?

A

layer 3

8
Q

Outputs from layer 5 go to

A

 subcortical structures like the striatum, superior colliculus,
pons, and tegmentum

9
Q

Outputs from layer 6 go to the ___

A

thalamus

10
Q

achromatopsia - impaired ___ recognition

A

color

 

11
Q

• agnosia - impaired object recognition
• achromatopsia - impaired color recognition
• prosopagnosia - impaired face recognition
• alexia - impaired word recognition
• receptive aphasia - impaired word interpretation. Input problem, ex. Wernicke’s • expressive aphasia - impaired word usage. Output problem, ex. Broca’s
• apraxia - object utilization / tool use deficits (

a lesion where would cause all of these? 

A

temporal association areas/ventral stream

12
Q

apraxia -- deficits with 

A

object utilization / tool use deficits

 

(impaired motor planning / ability to
carry out learned purposeful movements)

13
Q

The ___ does “Metacognition.”

A

Prefrontal Cortex

14
Q

___ is the meaningful selection of behavior to achieve desirable outcomes and avoid undesirable ones

A

metacognition

15
Q

metacognition invovles what 3 things

A

 integrating sensory info + pausing motor responses + monitoring outcomes

16
Q

define association cortex

A

everything that is not a primary motor, primary sensory, or premotor area

17
Q

association areas receives inputs from multiple areas and tie them together in some manner that was not possible in the

A

intiial sensory areas

 

generate more meaningful repsonses

18
Q

all neocortical association areas have at least ___ layers

A

5, most have 6

19
Q

dorsal is the where stream goes from v1 to

A

 occipital to parietal

20
Q

damage to __ pathway can cause --

inability to describe context of object, cant
use visuospatial cues
hemispatial neglect

A

dorsal pathway

21
Q

___ projection: to develop a memory for what
the object is recognized by the ventral stream

A

ventral prefrontal cortex

22
Q

what happens if primary visual areas are damaged but the temporal association areas are spared

A

blindsight

pt doesnt know they can see

 

e.g. show them stimuli.. say they cant see then ask them to just name whatever comes to mind and they end up saying what they could see

23
Q

 temproal association areas have to cimmunicates with v1 to
have ___ awareness of what you are seeing

A

concious

24
Q

___ hemisphere in the parietal love that
drives the intention/attention

A

right

25
Q

schizophrenia and severe adhd dont
have activation of ___ cortex

A

prefrontal

26
Q

facial recognition neurons are located in the 

A

fusiform gyrus (temporal lobe)

27
Q

planning neurons are found in the

A

frontal cortex

28
Q

attention neurons are found in the

A

parietal lobe

29
Q

reach neurons are found in the 

A

parietal lobe

30
Q

grasp neurons are a part of the ___ pathway

A

what/ventral

31
Q

mirror neurons are found in the

A

 inferior frontal gyrus 

32
Q

 instructed delay neurons around found in the 

A

prefrontal cortex

33
Q

Brodmann Areas represent a particular anatomical structure corresponded to a particular ____.

A

function