functional organization of the cerebral cortex Flashcards
4
Primary motor area (in precentral gyrus)
motor homunculus
1,2,3
Primary somatosensory area for touch, pressure, vibration, itch, tickle, temperature, pain, proprioception
post central gyrus
cross over
5,7
somatosensory association area, receives input from the primary somatosensory area, thalamus and other areas (presents)
6
premotor area, communicates with primary motor cortex, sensory association areas, basal nuclei and thalamus
leaned motor activities of a complex and sequential nature
8
frontal eye field area
Voluntary scanning of eyes, eye movement to follow lines
9,10, 11, 12
Prefrontal cortex
personality, intellect, complex learning abilities, recall of information, planning for the future, abstract idea, conscience
11
orbitofrontal cortex
receives sensory impulses from the primary olfactory area
allows you to identify odors and discriminate among different odors
more dominant on the RIGHT!
17
Primary visual area
Receives visual information and involved in visual perception
18, 19
Receives sensory impulses from the primary visual area and thalamus, relates present and past visual experiences
is essential for recognizing and evaluating what is seen
20, 21, 37
Facial recognition area
receives impulses from the visual association area, more dominant on right
22
auditory association area
lets you recognize a particular sounds as speech, music or noise
22, 39, 40
Wernicke’s area
Interprets meaning of speech by recognizing spoken words more dominant on LEFT. Left for Language
5, 7, 39, 40
Common integrative area
Receives nerve impulses form primary sensory areas, thalamus and parts of brainstem
41, 42
Primary auditory area
Receives visual information and involved in auditory perception
43
Primary gustatory area
Receives impulse for taste and Invovled in gustatory perception and taste discrimination
44, 45
Broca’s speech area
In 97% of people it’s located in the left hemisphere
impulse is going to premotor areas that control speech muscles and to primary motor area
aphasia
inability to use or comprehend words
non fluent aphasia
damage to Broca’s area
inability to properly articulate or form words
know what they want to say but can’t say it
Fluent aphasia
damage to Wernicke’s common integrative area or auditory association area
faulty understanding of spoken or written words
word salad - trings of words with no meaning (dementia)
Left Hemispheric
Language (spoken, written, sign language) Logic Scientific skill math reasoning numerical
Right hemispheric
Creativity musical artistic facial recognition discrimination of difference generating images sight, smell, sounds, etc
Beta waves
14-30Hz when the nervous system is active, sensory input, mental activity
Alpha waves
8-13 Hz awake but resting with eyes closed
Theta waves
4-7 Hz when experiencing emotional stress also in many disorders of the brain
Delta waves
1-5 Hz During deep sleep in adults and in normal awake infants
