EEG board prep Exams Questions and Answers (2023) (Verified Answers)

Mu Rhythm - CORRECT ANSWER -c3/c4 region -7-11Hz -does not block with eye opening -easy to see with eyes open -blocks unilaterally with contralateral hand -asymmetrical and asynchronous -NORMAL Beta - CORRECT ANSWER ->14 HZ -detected during wakefulness, enhanced during drowsiness, and decreased in deeper sleep -seen on barbiturates and benzodiazepines Lambda waves - CORRECT ANSWER -NORMAL, awake -sharp waves occurring in occipital region (o1/o2) during wakefulness -visually scanning a picture in a lit room -physiological, eyes OPEN -saccadic eye movement -4-6hz Small sharp spikes / BETS - CORRECT ANSWER -occurs in stage 1/stage 2 -peaks at 30-60 years -temporal region -occurs sporadically and short duration -NORMAL benign variant Wicket Spikes - CORRECT ANSWER -Single spike or 6-11 hz Mu like shape seen in drowsiness and light sleep. -mid temporal region -seen in adults over 30 -NORMAL benign variant 14&6hz positive spikes - CORRECT ANSWER -posterior/temporal region (t5/t6) -normal benign variant -light sleep -best seen in referential montage -runs last less than 2 seconds -seen in a lot of adolescents sleep spindles - CORRECT ANSWER -11-14hz , 1/2 second duration -central regions -asynchrony is abnormal after 2years old -stage 2 sleep Hypnagogic Hypersynchrony - CORRECT ANSWER -2-6years old -central/frontal regions -paroxysmal bursts high voltage, 3-4.5hz -normal variant of drowsiness Dilantin toxicity - CORRECT ANSWER ataxia (loss of control of body muscles) Laplacian montage - CORRECT ANSWER -source reference deviation -looks at only the electrodes that are closest to the point of interest -emphasizes localized waveforms deja vu - CORRECT ANSWER -co