Archive for the ‘Psychology and consciousness’ Category

Consciousness not yet explained

Posted by

Consciousness not yet explained Ray Tallis, Academy of Medical Sciences New Scientist, 9 January 2010 Tallis attacks the latest fad in consciousness studies, to the effect that near-term advances in technology will allow more and more accurate correlations between neural activity and conscious experience, and that when sufficient accuracy of correlation has been achieved, consciousness will have been explained. This idea that finding correlations will amount to an explanation is something Read more […]

Cognition and emotion

Posted by

Cognition and Emotion Mick Power & Tim Dalgleish Psychology Press – Taylor & Francis Group In the authors’ model, the emotional system is viewed as goal-directed, with emotions seen as functional in respect of individuals achieving goals that are broadly adaptive in evolutionary terms. The role of emotion is therefore regarded as making it easier to survive. Thus emotion might in some cases adaptively promote a response to third-party aggression, and can also be seen as promoting Read more […]

Decision making, determinism and consciousness

Posted by

Noise in the brain, decision making, determinism, free will and consciousness Edmund Rolls New Horizons in the Neuroscience of Consciousness – Eds – Elaine Perry, Daniel Collerton, Fiona Le Beau & Heather Ashton In the introduction to his chapter Rolls emphasises that decision making in the brain involves a mix of the reasoning system and the reward system, the latter to a large extent meaning the same thing as our emotional response. Rolls has made an extremely valuable contribution Read more […]

Memory, attention and decision making

Posted by

Memory, Attention & Decision-Making (Chapter 3. Reward and punishment-related learning; emotion and motivation) Edmund Rolls, Oxford University Oxford University Press (2008) The author views the orbitofrontal region of the prefrontal cortex as the most important region for determining the value of rewards or punishers. Objects are first represented in the visual, somatosensory and other areas of the cortex without having any aspect of reward value. This only arises in the orbitofrontal Read more […]

Neural correlates of consciousness

Posted by

Putting the Puzzle Together, towards a general theory of the neural correlates of consciousness James Newman Colorado Neurological Institute Journal of Consciousness Studies, 4, No. 2, 1997, pp. 100-21 http://ingentaconnect.com/journals/browse/imp/jcs Newmann suggests that orientation relative to the outer world, motor-sensory representation, and REM sleep converge on a core-conscious system called the extended reticular-thalamic activating system (ERTAS). The ERTAS has many projections Read more […]

Dynamic coordination in the brain

Posted by

Coordination in Circuits Mayank Mehta et al In:- Dynamic Coordination in the Brain – Eds. Christoph von der Malsburg, William A. Phillips, & Wolf Singer This chapter examines aspects of neural synchronies, compression of information in relation to neuron oscillations, and the gamma synchronies involvement in communication between neural assemblies in different areas of the brain. All layers of the cortex have a variety of inhibitory interneurons using the GABA neurotransmitter. Read more […]

Coordination in brain systems

Posted by

Coordination in brain systems Moser, E. I. et al In:- Dynamic Coordination in the Brain: From Neurons to Mind – Eds. Christoph von der Malsburg, William Phillips & Wolf Singer Neuroimaging of the human brain indicates coordination of activity between different brain regions. Large scale coordination is shown to span the entire brain.  Rhythmic modulation of electrical activity is seen as a possible mechanism to change the couplings amongst neurons. Networks undergoing electrical oscillation Read more […]

Coordination in brain systems

Posted by

Coordination in brain systems Moser, E. I. et al In:- Dynamic Coordination in the Brain: From Neurons to Mind – Eds. Christoph von der Malsburg, William Phillips & Wolf Singer Neuroimaging of the human brain indicates coordination of activity between different brain regions. Large scale coordination is shown to span the entire brain.  Rhythmic modulation of electrical activity is seen as a possible mechanism to change the couplings amongst neurons. Networks undergoing electrical oscillation Read more […]

Psilocybin and altered states

Posted by

Neural correlates of the psychedelic state as determined by fMRI studies with psilocybin www.pnas.org/cgi/doi/10.1073/pnas.1119598109 This paper further undermines the persistent claim within mainstream consciousness studies that all that needs to be done is to deconstruct the self (a relatively easy process) and then declare the consciousness problem solved. Altered states of consciousness have always appeared to contradict this claim, but the evidence of this was at a rather anecdotal level. Read more […]

Not ‘just what it is like’

Posted by

Steven Bodovitz In:- Consciousness and the Universe (2009-11) This paper describes an interesting experiment serving to demonstrate the distinction between information processing and conscious/subjective assessment. In an experiment by Lau & Passingham (2006) subjects are shown an image (the target), followed quickly by a second image (the mask). When the second image follows quickly enough, the first image/target is removed from consciousness. In a finding similar to blindsight and other Read more […]