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In humans. Up to 10 seconds beforehand.
http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00146/abstract
http://www.dailygrail.com/2014/3/Sc...nsciously-React-Events-10-Seconds-They-HappenCan your brain detect events before they even occur? That was the stunning conclusion of a 2012 meta-analysis of experiments from seven independent laboratories over the last 35 years, which found that the human body "can apparently detect randomly delivered stimuli occurring 1-10 seconds in the future" (Mossbridge, Tressoldi, & Utts, 2012). In the studies, physiological readings were taken as participants were subjected to unpredictable events designed to activate the sympathetic nervous system (for example, showing provocative imagery) as well as 'neutral events' that did not activate the nervous system. These readings showed that the nervous system aligned with the nature of the event (activated/not activated) - and what's more, the magnitude of the pre-event response corresponded with the magnitude of the post-event response.
http://journal.frontiersin.org/Journal/10.3389/fpsyg.2012.00390/fullfor stimuli of two or more types that are presented in an order designed to be unpredictable and that produce different post-stimulus physiological activity, the direction of pre-stimulus physiological activity reflects the direction of post-stimulus physiological activity, resulting in an unexplained anticipatory effect. The reports we examined used one of two paradigms: (1) randomly ordered presentations of arousing vs. neutral stimuli, or (2) guessing tasks with feedback (correct vs. incorrect). Dependent variables included: electrodermal activity, heart rate, blood volume, pupil dilation, electroencephalographic activity, and blood oxygenation level dependent (BOLD) activity.
http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00146/abstract