Term
Corticospinal Tract Lesions
Negative signs?
Positive signs? |
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Definition
Negative Signs:
- loss of ability to make fine movement of digits and distal limb muscles,
- slowness and weakness of voluntary movements
Positive Sign: Babinski Reflex |
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Term
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Definition
toes flex up and out in response to sole of foot being stroked, as opposed to normal response of toes flexing downward |
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Term
| Dorsal Root Ganglion Lesion |
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Definition
| loss of sensation (because dorsal root picks up signals) |
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Term
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Definition
| loss of ability move body parts (because ventral root sends out signals) |
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Term
Precentral Gyrus
What is it?
Lesion? |
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Definition
Primary Motor area
Lesion: paralysis of contralateral side of body
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Term
Postcentral Gyrus
What is it?
Lesion? |
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Definition
Somatosensory area
Lesion: loss of fine localization of stimuli, loss of ability to judge weights, shapes, and textures |
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Term
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Definition
| performance of a sequence of movements from memory |
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Term
Posterior Occipital Cortex
What is it?
Lesion? |
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Definition
Primary Visual Cortex
Lesion: scotomas (holes in visual fields) |
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Term
Broca's Area
What is it?
Lesion? |
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Definition
Motor Speech area
Lesion: cannot talk properly |
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Term
Wernicke's Area
What is it responsible for?
Lesion? |
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Definition
language reception and comprehension
Lesion: cannot understand speech |
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Term
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Definition
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Term
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Definition
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Term
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Definition
Vestibulochocochlear
Vestibular = Balance
Cochlear = Hearing |
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Term
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Definition
| tract of fibers connecting Broca's and Wernike's areas |
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Term
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Definition
- ascending tract: ascends in GRACILE FASCICLE and CUNEATE FASCICLE
- Synapses first in medula
- Forms synapses with the thalamus
- fine touch, vibration, pressure, limb movement and positional information
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Term
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Definition
| crude touch, pain, and temperature |
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Term
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Definition
| Memory formation and short-term memory |
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