Cerebral cortex Flashcards

1
Q

to/from cortex and subcortical structures and spinal cord

A

projection fibers

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2
Q

connect homologous areas of R and L hemisphere

A

commissural fibers

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3
Q

connect cortical regions within one hemisphere

A

association fibers

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4
Q

primary sensory areas receive sensory info from

A

thalamus

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5
Q

discriminates shape, texture, or size of objects

A

primary somatosensory

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6
Q

conscious discrimination of loudness and pitch of sounds

A

primary auditory

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7
Q

distinguishes intensity of light,shape, size, and location of objects

A

primary visual

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8
Q

discriminates among head positions and headmovements

A

primary vestibular

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9
Q

stereognosis and memory of the tactile and spatial environment

A

secondary somatosensory

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10
Q

analysis of motion, color; control of visual fixation

A

secondary visual

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11
Q

classification of sounds

A

secondary auditory

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12
Q

complex behavior organized; integration and interpretation of sensations, processing of memory, emotions, personality, executive functions

A

association cortices

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13
Q

executive function

self-awareness (avoid socially inappropriate behavior)

A

dorsolateral prefrontal association

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14
Q

sensory integration

understanding language and spatial relationships

A

parietotemporal association

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15
Q

impulse control
personality
ventral; regulates mood and affect
medial: regulates emotion and reaction to emotion

A

ventral and medial dorsal prefrontal association

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16
Q

executive function (goal-oriented behavior)
deciding on a goal
executing a plan
monitoring the execution of the plan

A

association cortices

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17
Q

L hemisphere dominant for 94% of people

A

communication

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18
Q

L: comprehension of spoken language
R: interpreting nonverbal signals (comprehension of spatial relationships)

A

Wernicke’s area

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19
Q

L: instruction for language output; plan movements to produce speech
R; instruction fro producing nonverbal communication (emotional gestures, intonation of speech)

A

Broca’s area

20
Q

communication loop

A
primary motor cortex
secondary auditory cortex
Wernicke's area
Subcortical connections
Broca's area
Oral and throat region of sensorimotor cortex
21
Q

Loss of tactile localization and conscious proprioception

A

primary somatosensory

22
Q

Loss of localization of sounds

A

primary auditory

23
Q

homonymous hemianopia

A

primary visual

24
Q

change in awareness of head position and movement

A

primary vestibular

25
inability to recognize objects using a specific sense
agnosia
26
inability to identify objects by touch and manipulation
astereognosis
27
inability to visually recognize objects despite having intact vision
visual agnosia
28
inability to visually identify peoples faces
prosopagnosia
29
cannot recognize sounds L: unable distinguish language vs other sounds R: interferes with interpretation of environmentals sounds
Auditory agnosia
30
inability to perform a movement to sequence of movements despite intact sensation, motor output, and cognition
apraxia
31
impairments in speaking and writing
Broca's aphasia
32
Speech disorder due to paralysis, incoordination, or spasticity of muscles used for speaking
Dysarthria
33
loss of executive function - lack of initiative, apathy | loss of divergent thinking
dorsolateral prefrontal association
34
difficulty with sensory integration - unable handle new info effectively; concrete thinking (L; Wernicke's R: neglect and/or difficulty understanding nonverbal communication)
Parietotemporal association
35
Interferes with emotional responses - impaired empathy, embarassment, guilt and regret - leads to inappropriate and risky beharior difficulty with self-control - impulsive
ventral and medial dorsal prefrontal association
36
disorder of spoken language
aphasia
37
disorder of comprehension of written language
alexia
38
disorder of ability to write
agraphia
39
difficulty expressing oneself using language | able to understand language and control muscles for other purposes
Brocas aphasia
40
language comprehension impaired | easily produce sounds, but output meaningless
Wernicke's aphasia
41
Damage to neurons that connect Wernickes and brocas areas in severe forms, speech and writing meaningless mild forms, paraphrasia occurs
conduction aphasia
42
inability use language in any form cannot produce understandable speech, comprehend spoken language, speak fluently, read or write Large lesion lateral L cerebrum
Global aphasia
43
speak in monotone lack emotional facial expressions and gestures flat affect
nondominant brocas area
44
difficulty understanding intonations | neglect
nondominant Wernickes area
45
tendency to behave as if one side of the body does not exist fail to report or respond to stimuli present on contralesional side usually affect left side of body
neglect
46
Hemiparesis/hemiplegia/hemisensory loss affecting R side of body and face Language/speech disorders cautious behavior, hesitant to try new tasks
L hemisphere stroke
47
Hemiparesis/hemiplegia/ hemisensory loss affecting L side of body and face L neglect Unable comprehend and produce emotional content of speech Impulsive behavior, unaware of deficits
R hemisphere stroke