Temporal decomposition of EEG during a simple reaction time task into stimulus- and response-locked components.
作者： Yusuke Takeda , Kentaro Yamanaka , Yoshiharu Yamamoto
DOI: 10.1016/J.NEUROIMAGE.2007.09.003
关键词:
摘要: Abstract Brain activity during reaction time tasks has been reported to consist of stimulus- and response-locked components. The aim this study is apply a method for temporally extracting these components from human scalp electroencephalography (EEG) an auditory simple task (SR-task). are extracted each channel the EEG epochs times (RTs) all trials by using discrete Fourier transform; performance verified known simulation data. stimulus-/response-locked compared with stimulus-/response-triggered average SR-task, auditory-evoked potential (AEP) passive hearing stimulus, movement-related (MRP) self-paced voluntary movement. For filtered bandpass 1–40 Hz, distributions negative peaks around 400 ms (N400) in stimulus-locked significantly different those stimulus-triggered suggesting that late parts largely suffer temporal smearing Furthermore, we show effect large when slow waves remain EEG. In conclusion, results confirm feasibility necessity decomposition proposed.
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