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content:spikes [2024/03/19 17:56] – [Sharp wave] biju.hameed@gmail.comcontent: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?500|Epileptiform Temporal Spike and Waves}}]
 ==== Six Hz spike-and-slow-wave ==== ==== Six Hz spike-and-slow-wave ====
 Synonym: phantom spike-and-wave (use of the term discouraged)[(:cite:pmid4138729>{{pmid>long:4138729}})] Synonym: phantom spike-and-wave (use of the term discouraged)[(:cite:pmid4138729>{{pmid>long:4138729}})]
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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 "benign epileptiform transients of sleep" (use of term discouraged)   * also called "benign epileptiform transients of sleep" (use of term discouraged)
 +==== 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?500|Polyspike and Waves}}]
 ==== References ==== ==== References ====
  
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