POSTS
These sharp, positive EEG waveforms appear in the occipital region during light sleep.
What are POSTS?
Lambda waves are only seen during this state.
What is wakefulness with eyes open and scanning?
Mu rhythm is seen over this part of the brain.
What is the sensorimotor cortex (C3, C4)
These spikes are seen in posterior temporal regions during drowsiness and light sleep.
What are 14 and 6 positive spikes?
These slow waves mix with alpha rhythm in the occipital region of children and teens
What are posterior slow waves of Youth?
POSTS typically occur during this sleep stage
What is stage 1 sleep?
Lambda waves disappear when the eyes do this.
What is close?
Mu rhythm disappears with this type of activity
What is movement or imagined movement of the contralateral limb?
These spikes are best evaluated using this montage
What is contralateral ear reference montage?
These waves are most common in this age range.
What is 8-14 years old?
POSTS are most commonly seen in this age group.
What is 15-35 years old?
Lambda waves are most common in this age group.
What is children and teens (2-15 years)
Mu rhythm is most commonly seen in this montage location.
What is central electrodes (C3, C4, CZ)
These spikes are considered this type of variant?
What is benign epileptiform variant?
These waves attenuate with this action.
What is eye opening?
POSTS are surface positive and usually symmetric but can be asymmetric in this region
What is the occipital region?
Lambda waves appear in this region of the brain
What is the occipital region?
Mu rhythm has this characteristic shape
What is arch-like or "M" shaped?
These spikes are most commonly seen in this age group.
What is children and adolescents?
These waves resemble this dessert item in shape.
What is an ice cream cone?
POST are distinguished from epileptiform discharges by this key feature.
What is their positive polarity and occurrence during drowsiness/light sleep.
Lambda waves differ from POSTS based on this factor.
What is level of consciousness (awake vs. asleep)?
Mu rhythm is suppressed by this type of stimulation.
What is tactile stimulation or movement?
Despite their sharp appearance, these spikes are not associated with this condition
What is epilepsy?
These waves are not epileptiform and disappear during this state.
What is drowsiness or light sleep?