NEURO EXAM 3 TOUCH AND PARIETAL LOBES

what is the anterior zone of the parietal lobe cortex

somatosensory cortex

what is the posterior zone of the parietal lobe cortex

posterior parietal cortex

the parts of the posterior parietal cortex are called

PE, PF, PG

what is the function of the somatosensory cortex

receives spatial information from your own body

what is the function of the posterior parietal cortex

receives info from outside your body

what is the body map within the somatosensory cortex referred to

homunculus

how is the area of the homunculus organized

areas on the skin are represented disproportionally, adject areas of the skin project to adjacent areas in the brain

what is the fun fact about the homunculus

the representation of areas of the body can become larger with experience (violin players have greater representation for their fingers on their left hand)

what is the premotor pathway

the how pathway

what is the prefrontal pathway

visuospatial working memory

what is the medial temporal regions (hippocampus) pathway

spatial navigation

ALL three pathways leave which area before going to their respective regions?

posterior parietal region

the how pathway is the posterior parietal region to the

premotor cortex

the visuospatial working memory pathway is the posterior parietal region to the

prefrontal cortex

the spatial navigation pathway is the posterior parietal region to the

medial temporal regions (spatial navigation)

which disorder causes and unawareness of an illness

anosognosia (some schizophrenia)

which symptom is characterized by people having an issue with being aware of more than one object at a time (cannot do two things at one)

simultagnosia

simultagnosia and neglect syndrome are not ____ issues, they are ____ issues

vision, attention

Balint’s syndrome is characterized by _____ and _____

simultagnosia, optic ataxia

which disorder is characterized by lesions in the posterior parietal lobe (where pathway)

balint’s syndrome

what symptom is characterized by an inability to reach/point to an object despite an ability to see it

optic ataxia

which disorder is characterized by an unawareness of an entire side of the body

Neglect syndrome

if someone has neglect syndrome they cannot be aware of everything going on the _____ side of the body when there’s a lesion in the right parietal lobe

left

if someone has neglect syndrome they cannot be aware of everything going on the _____ side of the body when there’s a lesion in the left parietal lobe

right

which disorder is characterized by dyscalculia, finger agnosia, right-left discrimination issues, dysgraphia

gerstmann syndrome

what symptom is characterized by an inability to perform math calculations

dyscalculia

which symptom is characterized by an inability to name, discriminate, or identify fingers

finger agnosia

which symptom involves an inability to distinguish from left and right

right-left discrimination

which disorder is characterized by a loss of skill movement not caused by weakness

apraxia

what is the efference copy of an action command that inhibits sensory responses so that these don’t interfere with the execution of the motor task

corollary discharge

what is the primary example of corollary discharge

when you tickle yourself you don’t laugh

what is the copy referred to that motor information sends out via the prefrontal cortex to warn the parietal lobe that this movement will happen

efference copy