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content:spikes [2024/03/19 17:56] – [Sharp wave] biju.hameed@gmail.com | content:spikes [2024/03/19 18:21] (current) – [Polyspike-and-slow-wave complex] biju.hameed@gmail.com | ||
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====== Spikes and Sharp Waves ====== | ====== Spikes and Sharp Waves ====== | ||
+ | Spikes, sharp waves, spike & waves are common EEG wave forms. | ||
==== Spike wave ==== | ==== Spike wave ==== | ||
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* Sharp waves should be differentiated from spikes, i.e. transients having similar characteristics but shorter duration. | * Sharp waves should be differentiated from spikes, i.e. transients having similar characteristics but shorter duration. | ||
[{{sharp-and-spikes.png ?500|Sharp waves & Spikes}}] | [{{sharp-and-spikes.png ?500|Sharp waves & Spikes}}] | ||
+ | ==== Spike-and-slow-wave complex ==== | ||
+ | |||
+ | An epileptiform pattern consisting of a spike and an associated following slow wave, clearly distinguished from background activity. May be single or multiple | ||
+ | [{{spike-and-wave.png? | ||
==== Six Hz spike-and-slow-wave ==== | ==== Six Hz spike-and-slow-wave ==== | ||
Synonym: phantom spike-and-wave (use of the term discouraged)[(: | Synonym: phantom spike-and-wave (use of the term discouraged)[(: | ||
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* Small sharp spikes of very short duration (<50 ms) and low amplitude (<50 µV), often followed by a small theta wave, occurring in the temporal regions during drowsiness and light sleep | * Small sharp spikes of very short duration (<50 ms) and low amplitude (<50 µV), often followed by a small theta wave, occurring in the temporal regions during drowsiness and light sleep | ||
* also called " | * also called " | ||
+ | ==== Polyspike-and-slow-wave complex ==== | ||
+ | * An epileptiform pattern consisting of two or more spikes associated with one or more slow waves | ||
+ | [{{polyspike-and-waves.png? | ||
==== References ==== | ==== References ==== | ||