<div dir="ltr">Hello,<br><br>I’m working at the Clinical Research Unit in the Ville-Evrard Hospital in France. We are planning to perform EEG studies in psychiatric subjects. In this context, we would like to do classical experiments such as oddball, stroop and lexical decision.<br><br>Looking the literature on ERP studies, I realise that often these paradigms do not include a "blinking" period, i.e., a period where one explicitly ask the participant to perform eye movements (blinking or saccades). I'm aware of the several methods to correct these artefacts. Also, I'm aware that the mental effort involved in suppressing eye blinks may impair task performance, and this can be even more pertinent when we deal with psychiatric subjects (a simple task can become a double task). However, could be this be an issue in a purely visual task? because when a subject blinks during the stimulus display she/he is simply not seeing the stimulus (or at least not seeing the way it could see it when is not blinking). Couldn't be better to have a blinking period? Also, even if we remove artefactual activity from the data, I wonder if blinking could have an effect on the cognitive process we want to measure,<br><br>Any comment will be appreciated,<br>José Luis<br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr">José Luis ULLOA FULGERI, PhD<br><a href="https://sites.google.com/site/joseluisulloafulgeri/" target="_blank">https://sites.google.com/site/joseluisulloafulgeri/</a><br>33 (0)6.29.50.64.93<span style="border-collapse:separate;color:rgb(102,102,102);font-family:"Times New Roman";font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="font-family:arial;font-size:small"><span style="font-family:tahoma,sans-serif"><span style="border-collapse:separate;color:rgb(102,102,102);font-family:"Times New Roman";font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="font-family:arial;font-size:small"></span></span></span></span></span></div></div>
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