Neurophysiology — Flashcards

Flashcard 51: In decorticate rigidity, the lower limbs show _____ due to loss of corticoreticular excitation of the inhibitory reticular formation of the medulla.

Answer: extension

Flashcard 52: _____ neurons within the striatum stimulate the indirect basal ganglia pathway

Answer: Cholinergic

Flashcard 53: One control center for horizontal gaze is located in the _____, which is responsible for ipsi-lateral gaze

Answer: paramedian pontine reticular formation (PPRF)

Flashcard 54: The _____ neurons in the pontine reticular formation, on stimulation, induce REM sleep.

Answer: cholinergic

Extra: Cholinergic neurons in the pontine reticular formation (e.g., Pedunculopontine and Laterodorsal tegmental nuclei) are responsible for the induction of REM sleep.

Flashcard 55: In _____ rigidity, the brainstem pathways are unregulated due to loss of effect of rubrospinal and corticospinal tract

Answer: decerebrate

Flashcard 56: Lesions to the _____ may result in:- deficits in verbal memory (ex. word recognition) if the dominant lobe is affected- deficits in nonverbal memory (ex. musical ability) if the nondominant lobe is affected

Answer: temporal lobe

Flashcard 57: Neurotransmitter receptors that act through _____ are called metabotropic receptors.

Answer: second messenger systems

Flashcard 58: The _____nergic neurons in posterior hypothalamus, on stimulation, induce arousal.

Answer: histamine

Flashcard 59: _____ bladder results from lesions above the sacral spinal cord levels

Answer: Spastic

Flashcard 60: The _____ tract carries information for pressure, vibration, fine (discriminative) touch, and proprioception

Answer: dorsal column-medial lemniscal