Cerebral Cortex Flashcards Preview

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Flashcards in Cerebral Cortex Deck (29):
1

Cerebral cortex contains:

Corpus callosum
Frontal lobes
Parietal lobes
Temporal lobes
Occipital lobes

2

Gyri

Bulging parts of cerebral cortex

3

Sulci

Depressions of cerebral cortex

4

Fissures

Deep valleys

5

Why is our brain so convoluted?

Due to evolutionary pressure to have an adaptive brain in a small space

6

Corpus callosum

Function: Allows information from one hemisphere to be shared with corresponding contralateral

7

What is split brain surgery and why is it done?

Splits corpus callosum and can isolate seizures to one side of brain for severe epilepsy

8

Lobes of Cortex:

Frontal
Temporal
Occipital

9

Frontal lobe:

Location: multiple regions

Function: self intimated voluntary movement
Personality
Working memory
Reward
Punishment

10

Primary motor cortex

Location: strip running from top of skull to ears

Function: organised hierarchically

Top regions: control feet, legs, groin, torso

Lower regions: hands, arms, face and tongue

Larger regions: face and hands (lots of fine motor movement)

11

Dorsolateral prefrontal cortex (DLPFC)

Location: midpoint of lobes

Function: most abstract thinking abilities ie cognitive process such as problem solving, goal, rules, working memory

12

Parietal lobes

Location: contain long strip next to primary cortex known as somatosensory cortex

Function: process incoming sensory info I.e touch

13

What is congenital insensitive?

Inability to feel pain

14

Hemispatial neglect

Individuals ignore left side of objects or space

Cause: damage to right parietal cortex

15

Occipital lobes

Location: near base of spine above hindbrain

Function: visual processing

16

Cortical blindness

Damage to occipital lobes

17

Achromatopsia

Inability to see colour

18

Akinetopsia

Difficulty perceiving movement due to damage in occipital cortex

19

Temporal lobes

Location: below frontal lobes before occipital cortex

Function: auditory, facial recognition, memory, object recognition

20

Primary auditory cortex

Processing sound information

21

Fusiform face area

Facial recognition

22

Prosopagnosia

Damage to temporal lobes - patients can’t recognise familiar faces

23

Visual agnosia

Damage to temporal lobes

24

Broca’s area

Language

25

Damage to brocas aphasia

Impairment in ability to produce fluent speech

26

Wernika area

Language

27

Wernikes aphasia

Ability to produce fluent speech but poor language comprehension

Nonsensical and contain little meaning

28

What is a limitation of neurobiological approaches?

Region can be described but we still don’t know exactly how it performs. Multiple regions overlap in function

29

Phrenology

Pseudo science based on the idea that lumps or structures on a persons head indicated aspects of their personally