Brain and Cognition
March 21, 2011
"Binaural rivalry": dichotic listening as a tool for the investigation of the neural correlate of consciousness.
Brain and Cognition
March 2011
Andrew A Fingelkurts, Alexander A Fingelkurts
Based on the theoretical analysis of self-consciousness concepts, we hypothesized that the spatio-temporal pattern of functional connectivity within the default-mode network (DMN) should persist unchanged across a variety of different cognitive tasks or acts, thus being task-unrelated. This supposition is in contrast with current understanding that DMN activated when the subjects are resting...
Brain and Cognition
March 2011
Petr Bob, Miroslav Světlák
Recent findings indicate that neural mechanisms of consciousness are related to integration of distributed neural assemblies. This neural integration is particularly vulnerable to past stressful experiences that can lead to disintegration and dissociation of consciousness. These findings suggest that dissociation could be described as a level of neural disintegration reflecting a number of...
Brain and Cognition
November 2009
C U M Smith
This is the second part of a review of the work of quantum physicists on the 'hard part' of the problem of mind. After an introduction which sets the scene and a brief review of contemporary work on the neural correlates of consciousness (NCC) the work of four prominent modern investigators is examined: J.C. Eccles/Friedrich Beck; Henry Stapp; Stuart Hameroff/Roger Penrose; David Bohm. With the...
Brain and Cognition
February 1, 2008
Jonathan Smallwood, Merrill McSpadden, Bryan Luus et al.
Using principal component analysis, we examined whether structural properties in the time series of response time would identify different mental states during a continuous performance task. We examined whether it was possible to identify regular patterns which were present in blocks classified as lacking controlled processing, either behaviourally (as a failure to withhold a response to a...
Brain and Cognition
October 1, 2004
At the root of embodied cognition: cognitive science meets neurophysiology.
Brain and Cognition
February 1, 2004
Morten Overgaard, J. Nielsen, A. Fuglsang-Frederiksen
The study of subliminal perception in normal and brain lesioned subjects has long been of interest to scholars studying the neural mechanisms behind conscious vision. Using brief durations and a developed methodology of introspective reporting, we present an experiment with visual stimuli that gives rise to little or no subliminal perception under normal viewing conditions. Coupled with...
Brain and Cognition
June 2003
Jaak Panksepp
This article summarizes recent conceptual and empirical advances in understanding basic affective processes of hte mammalian brain and how we might distinguish affective from cognitive processes. Six reasons are advanced for distinguishing the two types of consciousness, including (i) the presence of experienced valence, (ii) cortical sub-cortical locus of control, (iii) different developmental...
Brain and Cognition
April 1, 2003
M Corsi-Cabrera, E Miró, Y del-Río-Portilla et al.
EEG coherent activity is involved in the binding of spatially separated but temporally correlated stimuli into whole events. Cognitive features of rapid eye movement sleep (REM) dreaming resemble frontal lobe dysfunction. Therefore, temporal coupling of EEG activity between frontal and perceptual regions was analyzed from 10 min prior to dream reports (8 adults) from stage-2 and REM sleep. EEG...
Brain and Cognition
February 1, 2000
Searching for the neural correlates of consciousness: clues from face recognition research.
Brain and Cognition
June 1997
M A Bedau
The dynamical patterns in mental phenomena have a characteristic suppleness--a looseness or softness that persistently resists precise formulation--which apparently underlies the frame problem of artificial intelligence. This suppleness also undermines contemporary philosophical functionalist attempts to define mental capacities. Living systems display an analogous from of supple dynamics....
Brain and Cognition
August 1, 1995
Newly proposed criteria for Lewy body dementia include alterations in consciousness. Lewy body dementia is also associated with a disturbance in cholinergic transmission; neocortical cholinergic deficits in this disorder are more extensive than in Alzheimer's disease and are correlated with symptoms commonly associated with delirium, such as visual hallucinations. The traditional view that...
Brain and Cognition
November 1, 1992
M A Persinger, K Makarec
We hypothesized that the feeling of a presence, particularly during periods of profound verbal creativity (reading or writing prose or poetry), is an endemic cognitive phenomenon. Factor analyses of 12 clusters of phenomenological experiences from 348 men and 520 women supported the hypothesis. We conclude that periods of intense meaningfulness (a likely correlate of enhanced burst-firing in...
Brain and Cognition
July 1, 1986
M S Greenberg, M J Farah
The cortical locus of dream generation could be lateralized to the right or left hemisphere, or be bilaterally represented with either equal or unequal contributions from each hemisphere. In this paper we review the neurological literature for cases of loss or alteration of dream report after brain damage. The distribution of lesion sites is used to test the various hypotheses concerning the...