The First Half Second: The Microgenesis and Temporal by Haluk Öğmen, Bruno G. Breitmeyer

By Haluk Öğmen, Bruno G. Breitmeyer

Contemporary advances within the research of visible cognition and realization have dealt essentially with steady-state homes of visible processing, with little cognizance to its dynamic elements. the 1st part moment brings jointly for the first time the most recent examine at the dynamics of unsleeping and subconscious processing of visible info, interpreting the time-course of visible tactics from the instant a stimulus is gifted until eventually it registers in a behavioral reaction or in awareness a couple of hundred milliseconds later. The individuals study this "first part moment" of visible processing -- referred to as its microgenesis -- from quite a few views, together with neuroscience, neuropsychology, psychophysics, psychology, and neural community modeling.The ebook first treats conceptual, methodological, and ancient concerns and offers an built-in assessment of findings from contemporary stories at the neural underpinnings of recognition. The ebook then turns to neurophysiological correlates of dynamic processing in imaginative and prescient, highlighting the temporal measurement of sensible differences; visible covering and what it may inform us in regards to the operation of either basic and irregular brains; the dynamics of attentional mechanisms from electrophysiological, behavioral, and modeling views; and temporal features of item and have notion. eventually, drawing at the foundations laid in prior chapters, the publication elaborates extra at the dynamic relation of unsleeping and subconscious procedures in imaginative and prescient. the 1st part moment fills the necessity for an interdisciplinary discussion at the research of the dynamic features of visible processing and, with its wealthy empirical and theoretical findings, charts promising instructions for destiny study.

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Extra info for The First Half Second: The Microgenesis and Temporal Dynamics of Unconscious and Conscious Visual Processes

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Since most of current research in visual cognition and neuroscience focuses on visual contents, we now take consciousness as a state to be a necessary given and, for the remainder of the chapter, proceed to focus on the contents of visual consciousness. 3 Criterion Content, Linking Hypotheses, NCCs, and Neural Correlates of Unconscious Processing If one defines perception as the phenomenal registration of sensory input, one can, as mentioned above, find neural correlates of visual perception almost anywhere along the visual tract.

2004b). With TMS stimulation applied to the occipital pole over a range of stimulus onset asynchronies (SOAs) relative to the visual target stimulus, Corthout et al. , 2000). In a comparison of visual and TMS masking, Breitmeyer et al. (2004b) argue that these early and late epochs of TMS masking correspond to the optimal SOA intervals obtained in paracontrast and metacontrast masking, respectively. Moreover, Breitmeyer et al. (2004a; see also Breitmeyer & Ög˘men, this volume) have shown that unconscious stimulus processing may occur not only at very early but also at later stages of cortical processing.

Within the cortical tissue) seems to be sufficient for PMG of stimulation. For me (and probably for Gerald Edelman, Giulio Tononi, Joseph Bogen, and Rodolfo Llinás), top-down modulation from the front of cortex is necessary but insufficient for explicit representation to be created. The activity within SP should be synchronized with or at least modulated by the subcortical activity from the nonspecific thalamic nuclei (the NSP), such as intralaminar nuclei, nucleus reticularis thalami, and pulvinar, and possibly brainstem reticular activating afferents.

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