Flashcards in Neuro Random facts Deck (109)
In the glabrous (hairless) skin, for dynamic, fine/light touch, position sense, adapt quickly
Adapt quickly, in the deep skin layers, ligaments, joints, sense vibration and pressure
Adapt slowly, in the fingertips and superficial skin, sense pressure, deep status touch (e.g., shapes, edges), position sense
Adapt slowly, in the fingertips and joints, sense pressure, slippage of objects along surface of skin, joint angles change
What are does stress and panic
locus ceruleus (where norepi is synthesized)
Vitamin necessary for synthesis and catabolism of GABA
How is GABA synthesized?
From glutamate by glutamate decarboxylase
What causes the extra ocular eye movements during REM?
Paramedian pontine reticular formation/conjugate gaze center
Pain, temp; pressure, touch, vibration, proprioception (from the spinothalamic and DCML pathways)
Face sensation, taste (from the trigeminal and gustatory pathway)
Vision (goes TO the calcarine sulcus)
What are the output nerves from the cerebellum?
Purkinje cells to the deep nuclei of cerebellum to the contralateral cortex via superior cerebellar peduncle
Characteristic lesion for hemiballismus
Contralateral subthalamic nucleus
Which disease do you see Lewy bodies in?
Neurohormonal changes in Huntington's disease?
Increased dopamine, decreased GABA, decreased ACh
What causes neuronal death in HD?
NMDA-R binding and glutamate toxicity
Agraphia, acalculia, finger agnosia, left-right disorientation
Lesion to the dominant pariental-temporal cortex, Gerstmann syndrome
Damage to the PPRF
Eyes look away from the lesion
Damage to the frontal eye fields
Eyes look toward the lesion
What is cerebral perfusion driven by?
Pco2 (hypoxemia increases cerebral perfusion only when Po2 is less than 50)
Why do people faint in panic attacks?
Hyperventilation leads to decreased cerebral perfusion
Equation for cerebral perfusion pressure