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1
Comparison of real and idealized cetacean flippers
In: Language, speech and hearing services in schools. - Rockville, Md. : Assoc. 4 (2009) 4, 046001
OLC Linguistik
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2
Electrical neuroimaging reveals early generator modulation to emotional words
In: Neuroimage, vol. 21, no. 4, pp. 1242-51 (2004)
BASE
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3
The speed of visual cognition
In: Supplements to Clinical Neurophysiology, vol. 57, pp. 617-27 (2004)
Abstract: Intracranial electrophysiological recordings in primates showed repeatedly that neurons in several cortical areas are activated very early after visual stimulus presentation, practically at the same time (or even before) the activation of primary sensory neurons. Even neurons at the highest hierarchical levels of the visual system are activated in less than 100 ms. These findings challenge the classical interpretation of human evoked potential (EP) data that assume that the first, "exogenous", EP components from 50 to 150 ms reflect the initial volley of sensory activation in the striate and extrastriate visual cortex and are not yet influenced by cognitive task demands. Indeed, several recent EP studies using analysis methods that go beyond the classical approach of defining "components" at certain scalp positions indicate that highly complex stimulus features can influence EP responses within the first 100 ms. This indicates that sophisticated cognitive processing is much faster than previously thought and opens new perspectives with respect to the role of both, bottom-up as well as top-down mechanisms in visual processing.
Keyword: Acoustic Stimulation/methods Animals Brain Mapping Cognition/*physiology Electroencephalography/methods Evoked Potentials; Auditory/physiology Evoked Potentials; Visual/physiology Humans Linguistics Photic Stimulation/methods Reaction Time/*physiology Time Factors Visual Pathways/*physiology Visual Perception/*physiology
URL: https://serval.unil.ch/notice/serval:BIB_7778805E6BDD
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