Cognitive Electrophysiology of Attention. Signals of the by George R. Mangun

By George R. Mangun

Cognitive Electrophysiology of Attention explores the basic mechanisms of awareness and similar cognitive capabilities from cognitive neuroscience views. awareness is a necessary cognitive skill that allows people to method and act upon correct details whereas ignoring distracting details, and the potential to concentration consciousness is on the center of psychological functioning. realizing the neural bases of human recognition continues to be a key problem for neuroscientists and psychologists, and is key for translational efforts to regard attentional deficits in various neurological and psychiatric problems. Cognitive electrophysiology is on the middle of a multidisciplinary process that contains the efforts of psychologists, neuroscientists, neuropsychologists, psychiatrists, and neurologists to spot uncomplicated mind mechanisms and advance translational methods to enhance psychological overall healthiness. This edited quantity is authored by way of prime investigators within the box and discusses tools eager about electrophysiological recordings in people, together with electroencephalography (EEG) and event-related power (ERP) equipment, and likewise comprises facts from practical magnetic resonance imaging (fMRI). Cognitive Electrophysiology of consciousness illuminates particular versions approximately attentional mechanisms in imaginative and prescient, audition, multisensory integration, reminiscence, and semantic processing in humans.

  • Provides an exhaustive evaluation of cognizance procedures, going from common functioning to the pathological, and utilizing a mixture of methodological tools
  • An very important reference for electrophysiology researchers taking a look at underlying consciousness techniques instead of the tools themselves
  • Enables researchers throughout a vast variety of cognitive-process and methodological specialties to stick present on specific hypotheses, findings, and methods
  • Edited and authored via the global leaders within the box, affording the broadest, such a lot specialist insurance available

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Roughly, the model postulates that a visual neuron's spike rates follow a sigmoidal function of the contrast signal from the stimulus within its receptive field, with the contrast signal multiplied by attention and divided by a normalization factor proportional to the sum of responses from all neurons that respond to the stimulus. , Cavanagh, Bair, & Movshon, 2002; Kapadia, Westheimer, & Gilbert, 1999; Sceniak, Ringach, Hawken, & Shapley, 1999); a small stimulus would activate fewer neighboring neurons, thereby incurring relatively weak divisive normalization.

1999). , Corbetta & Shulman, 2002; Desimone & 31 Duncan, 1995; Gregoriou, Gotts, Zhou, & Desimone, 2009; Kastner & Ungerleider, 2001; Moore & Armstrong, 2003; Moore & Fallah, 2004). However, a major contributing factor appears to be within-receptive-field input competition. , see Suzuki, 2005, for a review of the animal literature, and Kastner & Ungerleider, 2001, for a review of human functional magnetic resonance imaging (fMRI) data), higher-level visual neurons are more likely to have competing stimuli falling within their receptive fields.

2011). When memory is not enough: electrophysiological evidence for goal-dependent use of working memory representations in guiding visual attention. Journal of ­Cognitive Neuroscience, 23, 2650–2664. I. SPATIAL ATTENTION 28 2. HOW THE BRAIN PREVENTS AND TERMINATES SHIFTS OF ATTENTION Desimone, R. (1998). Visual attention mediated by biased competition in extrastriate visual cortex. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 353, 1245–1255. , & Duncan, J.

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