Frontal Lobe Flashcards

(48 cards)

1
Q

primar motor area functions

A
  • Movement selection
  • Fine movements
  • Motor strength
  • Direction of movement
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2
Q

Pre-Motor areaa

A
pre-motor area
lateral area
medial area
frontal eye area
supplementary eye field
Broca's Area
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3
Q

What area # is Broca’s Area

A

Area 44

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4
Q

Area 44 is ______-

A

broca’s area

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5
Q

pre-motor area functions

A
  • Movement programming
  • Corollary discharge (the world continues to stay stable despite the movement of our eyes)
  • Motor strength
  • Mirror neurons
  • Eye movement
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6
Q

connections of motor and pre-motor areas

A
  • motor cortex
  • premotor cortex
  • eye fields
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7
Q

motor cortex

A
  • projects to spinal neurons and cranial nerves

- projects to the basal ganglia and the red nucleus

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8
Q

premotor ortex

A
  • projects to spinal cord and spinal cortex

- receives projections from parietal areas and dorsolateral perfrontal area

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9
Q

eye fields

A

receive info from PG and the superior colliculus

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10
Q

symptoms of frontal lobe damage

A

disturbances of motor function

  • loss of fine movement, speed, and strength
  • loss of movement programming
  • changes in voluntary gaze
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11
Q

loss of fine movement, speed, and strength is from damage to wehre

A

primary motor cortex

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12
Q

loss of movement programming is from damage to where

A

premotor or dorsolateral cortex

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13
Q

changes in voluntary gaze from damage to where

A

frontlal eye fields

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14
Q

where is the end of dorsal and ventral streams

A

dorsolateral PFC

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15
Q

3 connections of pre frontal cortex

A

Dorsolateral PFC
orbitofrontal PFC
ventromedial PFC

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16
Q

dorsolateral PFC connections

A
  • With posterior parietal cortex
  • The superior temporal sulcus
  • With the basal ganglia, and superior colliculus
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17
Q

Orbitofrontal PFC connections

A
  • With auditory regions of the superior temporal cortex
  • Posterior central gyrus
  • Superior temporal sulcus
  • Visual regions of the inferior temporal cortex (Area TE)
  • Limbic regions of the medial temporal areas (related to memory)
  • Periaqueductal duct (pain perception)
  • olfaction and gustation
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18
Q

prefrontal cortex functions

A

controls cognitive processes so that appropriate behaviours are selected at the correct time

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19
Q

internal cues

A
  • temporal memory
  • working memory
  • feelings about something
  • guide how we think
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20
Q

temporal memory

A

information collected from the dorsal and ventral streams

21
Q

working memory

A

what are you thinking about in the here and the now

22
Q

external cuews

A
  • What someone or something in environment does that gives us feedback that we use to adjust internal cues
23
Q

context cues

A
  • Social interactions (orbitofrontal PFC)
24
Q

autonoetic awareness

A
  • self knowledge collected over a lifetime of experience
  • Binding together the awareness of oneself as continuous through time
  • Have a sense of who and how you are relative to everyone else around you
25
frontal lobe executive functions
- planning and selection - persistence and ignoring distracting stimuli - memory for what we have already done - responding to both internal and external and contextual information
26
left frontal lobe
language | encoding memories
27
right frontal lobe
non-verbal movements facial expression retrieving memories
28
symptoms of frontal lobe lesions
- impaired divergent thinking - decreased verbal and design fluency - increased preservation - deficit of completing larger tasks
29
tests used for frontal lobe damage
test response inhibition: stroop test Wisconsin card sorting
30
stroop
say colour don't read word
31
Wisconsin card sorting test
sort card into proper pile following a change in sorting "rules
32
changes in personality
- Appears after lesions of the left frontal lobe - Outward apathy, indifference, loss of initiative - Reduced sexual interest, little or no verbal output
33
Pseudo-psychology
- Appears after lesions of the right frontal lobe - Immature behavior, lack of tact and restraint - Promiscuous sexual behavior - Coarse language; lack of social graces
34
diseases affecting frontal lobe
- schizophrenia - parkinson's disease - korsakoff's
35
Schiophrenia and frontal lobe
- abnormality in the mesocortical dopaminergic projection | - decrease in blood flow to the frontal lobes
36
parkinsons disease and frontal lobe
loss of dopamine cells in the substantia nigra thaat project to prefrontal cortex
37
Kotsakoffs
alcohol induces damage over many years that damages the dorsomedial thalamus and a deficiency in frontal lobe catcholmines
38
how do you test verbal fluency
Thurstone word fluency | write words as you can that start with ___
39
how do you test non-verbal fluency
design fluency
40
How do you test motor abilities
hand dynamoetry figer tapping sequencing
41
how do you test language comprehension
token test spelling phonetic discrimination
42
how do you test working memory
self ordering
43
how do you test planning
tower of london
44
Token test
- language comprehension test - shapes of different sizes and colors are placed in front of the subject - The test begins with simple tasks such as touch the white circle and then becomes progressively more difficult - Touch the large yellow circle and the large green square
45
Broca's area also known as
inferior frontal gyrus
46
Anterior cingulate cortex
- Makes extensive bidirectional connections with motor, premotor, and prefrontal cortex as well as with the insula
47
voluntary gaze
Frontal lobe lesions produced alterations in voluntary eye gaze
48
prolonged stress is correlated with functionally significant changes in ...
the structure of neurons in the PFC that affect temporal memory and goal-directed behaviors