EEG board Exam prep Study Guide (Fall 2022)

EEG board Exam prep Study Guide (Fall 2022) Mu Rhythm -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 ->14 HZ -detected during wakefulness, enhanced during drowsiness, and decreased in deeper sleep -seen on barbiturates and benzodiazepines Lambda waves -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 -occurs in stage 1/stage 2 -peaks at 30-60 years -temporal region -occurs sporadically and short duration -NORMAL benign variant Wicket Spikes -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 -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 -11-14hz , 1/2 second duration -central regions -asynchrony is abnormal after 2years old -stage 2 sleep