The timing of brain events: reply to the "Special Section" in this journal of September 2004, edited by Susan Pockett

Consciousness and Cognition
Benjamin Libet


In this "Reply" paper, the arguments and experimental findings by Pockett, Pollen, and Haggard et al. are analyzed. It had been shown () that a 0.5s duration of repetitive activations of sensory cortex is required to produce a threshold of sensation. The view that this is due to a facilitatory buildup in excitatory state to finally elicit neuronal firing is shown to be incompatible with several lines of evidence. Objections to the phenomenon of subjective referral backwards in time (for the delayed sensation) are also untenable. report that a self-initiated act can, under hypnotic suggestion, appear to the subject to be "involuntary." The act under hypnosis is better viewed as one initiated unconsciously, not as an act of conscious will.


Oct 1, 1990·Electroencephalography and Clinical Neurophysiology·I Keller, H Heckhausen
Feb 1, 1968·Electroencephalography and Clinical Neurophysiology·S Ochs, F J Clark
Jan 1, 1965·Perspectives in Biology and Medicine·B Libet
May 20, 1999·Experimental Brain Research·P Haggard, M Eimer
Aug 23, 2002·Consciousness and Cognition·Stanley A Klein
Aug 23, 2002·Consciousness and Cognition·Stanley Klein
Aug 28, 2003·Consciousness and Cognition·Benjamin Libet
Sep 1, 2004·Consciousness and Cognition·Susan Pockett
Sep 1, 2004·Consciousness and Cognition·Daniel A Pollen
Sep 1, 2004·Consciousness and Cognition·Patrick HaggardDavid A Oakley

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Nov 13, 2008·Cognitive Neurodynamics·Susan PockettWalter J Freeman
Sep 23, 2010·Advances in Cognitive Psychology·W R Klemm
May 1, 2007·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Mark Hallett
Jul 13, 2005·Consciousness and Cognition·David A Oakley, Patrick Haggard
Sep 22, 2015·Frontiers in Psychology·Davide RigoniGiuseppe Sartori
Feb 23, 2021·The American Journal of Clinical Hypnosis·Enrico FaccoGastone Zanette

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