ERP-Lab 台大醫院精神部 神經生理研究室

ERP, MMN, P50, schizophrenia, prodrome, MEG


Phase reset model on the generation of ERP

Two alternative (but not necessarily exclusive) mechanisms have been proposed on the generation of ERP

  1. Phase reset model: it is assumed that stimulation induces a partial ‘phase-resetting’ of ongoing EEG rhythms in each trial, and averagingthese phase-coherent rhythms produces the ERP (Basar, 1980;Brandt et al., 1991; Jansen et al., 2003; Makeig et al., 2002; Sayers et al., 1974).
  2. Additive power model[also referred to as evoked model in the literature (e.g. Fellet al., 2004; Klimesch et al., 2004a; Hanslmayr et al., 2007)]: stimulation elicits a neural population response with fixed polarity and latency in each trial which is additive to and independent from ongoing activity, and that averaging these evoked responses produces the ERP (Jervis et al., 1983; Lopes da Silva, 1999; Schroederet al., 1995).

也注意(北京師範大學認知神經科學與學習國家重點實驗室) 張丹丹  羅躍嘉 的大作ERP 的神经机制:诱发模型还是相位重排模型?

Time lock vs. Phase Lock

何謂Time-locked?何為phase-locked?請先看在心心水滴中這個網頁http://52brain.com/read-htm-tid-9163.html

Phase locking在Sensory gating之角色:Rosburg T, Trautner P, Fell J, Moxon KA, Elger CE, Boutros NN (2009): Sensory gating in intracranial recordings–the role of phase locking. Neuroimage. 44:1041-1049.

也要看看由 RW Thatcher 著作 –COHERENCE, PHASE DIFFERENCES, PHASE SHIFT AND PHASE LOCK IN EEG/ERP ANALYSES


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