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Neuronal basis of Consciousness

Scientific approach towards the neuronal mechanisms of conscious experience. Includes neurophysiology, imaging, psychophysics, and theory.

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John M. Delacruz
Igor Kagan
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  • Naotsugu Tsuchiya (Caltech)

    This paper quite convincingly shows that the induced gamma band response recorded from scalp-EEG is an artifact of microscaades. I highly recommend this paper to everybody who has read, cited, or published (!) any papers reporting gamma band response using scalp-EEG. This paper is likely to be a must read in this research domain in the near future. The paper is very clearly written. I also recommend to read Pascal Fries' commentary in the same issue ("Finding Gamma" Pascal Fries,1,2,∗ René Scheeringa,1 and Robert Oostenveld1) and the replies from the people who published many papers reporting gamma band response with scalp-EEG (http://www.neuron.org/content/article/comments?uid=PIIS0896627308003012).

    Transient induced gamma-band response in EEG as a manifestation of miniature saccades. Yuval-Greenberg S (2008) Neuron.
    June 1, 2008
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  • Virginie van Wassenhove (Caltech)

    Madoka will present a study looking at synchrony between two brains aka "interpersonal EEG" as a prelude to future studies.

    Prior to Madoka's presentation, I'd like to have a 5 min debriefing on the data John Reynold's presented today (narrow/broad spiking and cell type) since these have direct implications for LFP recordings and EEG - especially w.r.t gamma band...

    See you all then!
    Virginie

    October 15, 2007
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  • Naotsugu Tsuchiya (Caltech)

    Hi all,

    I'm planning to present three interesting papers from recent issues of Nature and Science.

    1. Deep stimulation to thalamus to awaken an unconscious patient
    2. Experimental induction of out-of-body experiences.

    If you are interested (and if you're a morning person!), you are welcomed to join the Journal club.
    It is held in room 50 (MRI conference room) in Broad from 8:30-9:30 AM.

    Cheers

    Nao

    Behavioural improvements with thalamic stimulation after severe traumatic brain injury.
    Schiff ND, Giacino JT, Kalmar K, Victor JD, Baker K, Gerber M, Fritz B, Eisenberg B, O'Connor J, Kobylarz EJ, Farris S, Machado A, McCagg C, Plum F, Fins JJ, Rezai AR
    Nature 2007, Vol 448 ... read more

    October 6, 2007
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  • Naotsugu Tsuchiya (Caltech)

    [visionlist] Special issue in Advances in Cognitive Psychology Inbox

    Reply
    Reply to all Reply to allForward Forward Print Add Greg to Contacts list Delete this message Report phishing Show original Message text garbled?
    Greg Francis
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    12:40 pm (51 minutes ago)
    We are pleased to announce the publication of a special issue of the
    journal Advances in Cognitive Psychology on "Visual masking and the
    dynamics of human perception, cognition, and consciousness." Guest
    editors for the special issue are Ulrich Ansorge, Greg Francis, Michael
    Herzog and Haluk Öğmen.

    The 27 papers in the special issue derived from a workshop that was
    h ... read more

    October 4, 2007
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  • Virginie van Wassenhove (Caltech)

    This is a reminder that we will have our first JC at 4 pm today in BI 13. Please see info here:
    http://journalfire.org/clubs/shimojo_lab_journal_club

    I'll present some basics of EEG for the newbies, and follow up with some discussion of the following paper:
    Canolty RT, Edwards E, Dalal SS, Soltani M, Nagarajan SS, Kirsch HE, Berger MS, Barbaro NM, Knight RT
    High gamma power is phase-locked to theta oscillations in human neocortex.
    Science 2006, Vol 313, Issue 5793, pp 1626-8

    October 4, 2007
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  • Igor Kagan (Caltech)

    Tots More Socially Cognitive Than Apes

    By LAURAN NEERGAARD – Sep 6, 2007

    WASHINGTON (AP) — Toddlers may act up like little apes, but researchers who compared the species concluded a 2-year-old child still has the more sophisticated social learning skills.

    In one test, preschoolers who wanted a toy hidden in a trick tube intently copied a scientist's movements to retrieve the prize. Chimps watched the lesson, but then mostly tried to smash or bite open the tube. When it came to simple math, however, the apes seemed to know more than the youngsters, apparently "adding" how many tasty raisins researchers had hidden.

    In a novel study, scientists lured 106 chimpanzees, 32 orangutans and 105 toddlers to sit thro ... read more

    Humans have evolved specialized skills of social cognition: the cultural intelligence hypothesis. Herrmann E (2007) Science.
    September 29, 2007
    Thanks Igor. De Waal's observation is highly relevant here. It means that a conspecific dependent component of the knowledge transfer could certainly bias the assessment of social cognitive skills in favor of humans, which is a possible confound in the Tomasello study. Moreover, social rank dependency of cultural transfer has been observed in Japanese macaques: "A new case of fish-eating in Japanese macaques: implications for social constraints on the diffusion of feeding innovation." Leca JB, Gunst N, Watanabe K, Huffman MA Am J Primatol 2007, Vol 69, Issue 7, pp 821-8 - Zoltan Nadasdy (Caltech) September 30, 2007 Comment deleted
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  • Naotsugu Tsuchiya (Caltech) created the Neuronal basis of Consciousness journal club.
    September 26, 2007
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