Journal of Cognitive Neuroscience articles from January 1999

Journal of Cognitive Neuroscience archives from January 1999

Effects of background color on the global and local processing of hierarchically organized stimuli.
January 1, 1999... INTRODUCTION Since Navon's (1977) influential work, much research effort has been devoted to understanding the processing characteristics of global and local elements of the hierarchically organized visual patterns (see Kimchi, 1992, for a...

Graded functional activation in the visuospatial system with the amount of task demand.
January 1, 1999... INTRODUCTION Functional neuroimaging studies typically measure cortical activation to assess the involvement of a particular region in a given task. The qualitative properties of the task are assumed to be critical to the pattern of...

Cortical regions associated with perceiving, naming, and knowing about colors.
January 1, 1999... INTRODUCTION Does retrieving previously stored information about an attribute of an object depend on reactivating brain regions that mediate perception of that attribute? The notion that visual imagery engages the top-down activation of...

Neural evidence linking visual object enumeration and attention.
January 1, 1999... INTRODUCTION When humans are asked to enumerate the items in a visual display, their performance shows a clear discontinuity around four items (Trick & Pylyshyn, 1994). Performance below this limit is highly accurate, rapid, and apparently...

Blindsight in subjects with homonymous visual field defects.
January 1, 1999... INTRODUCTION A lesion in the optic tract, lateral geniculate nucleus, optic radiation, or striate cortex (V1) generally leads to blindness in that area of the visual field that corresponds retinotopically to the lesion side (Holmes, 1918;...

Frames of reference for mapping tactile stimuli in brain-damaged patients.
January 1, 1999... INTRODUCTION The process of coding sensory signals in space (and acting toward them) can take place in reference to different systems of coordinates. Stimuli mapped according to egocentric frames of reference are defined in relation to the...

Conceptual processing during the conscious resting state: a functional MRI study.(magnetic resonance imaging)
January 1, 1999... INTRODUCTION Like other human biological structures, the human brain developed over evolutionary time to solve species-specific, recurring problems in the ancestral environment (Barkow, Cosmides, & Tooby, 1992; Donald, 1991). The general...

Functional anatomy of perceptual and semantic processing for odors.
January 1, 1999... INTRODUCTION Positron emission tomography (PET) studies reveal that different cognitive operations take place in different regions of the brain, and as a consequence, it can be inferred that separate subsystems are used to carry out these...

Cerebral mechanisms of hypnotic induction and suggestion.
January 1, 1999... INTRODUCTION The neural mechanisms underlying hypnotic experience and responses to hypnotic suggestions are largely unknown and even the most general hypotheses remain controversial. Right-hemispheric function has been emphasized (e.g.,...

Reinforcement Learning.(Review)
January 1, 1999... R. S. Sutton and A. G. Barto Cambridge, MA: MIT Press, 1998. Hardbound, $40.00. ISBN 0-262-19398-1 Reviewed by C. R. Gallistel Reinforcement learning, as understood by Sutton and Barto, is a fusion of the trial-and-error...

The Two Sides of Perception.(Review)
January 1, 1999... Richard B. Ivry and Lynn C. Robertson Cambridge MA: MIT Press, 1998 Hardbound, $55.00. ISBN 0-262-09034-1 Reviewed by David Poeppel With The Two Sides of Perception, Ivry and Robertson have done the field of cognitive neuroscience a...

Toward a Science of Consciousness II. The Second Tucson Discussions and Debates.(Review)
January 1, 1999... Edited by S. R. Hameroff, A. W. Kaszniak, and A. C. Scott Cambridge, MA: MIT Press, 1998. Hardbound, 764 pp., $70.00. ISBN 0-262-08262-4 Reviewed by Diana S. Woodruff-Pak The Tao of Consciousness For someone looking for a volume...