Archive for December, 2014

Orch OR objections

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Achilles’ heels of the Orch OR model NeuroQuantology, March 2007, Vol 5, Issue 1, pp. 182-5 www.neuroquantology.com/ Summary and review of the above paperin fact Every new entrant to consciousness studies has to prove their worth by refuting Penrose, although this is often at the expense of reducing their own credibility. The core argument in this paper is that when a subjective experience involves a perception that is untrue, such that something belongs to you when it belongs to someone Read more […]

Coherent energy transfer

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The feasibility of coherent energy transfer in microtubules Travis Craddock et al, Nova Southeastern University http://arxiv.org/abs/1405.3170 Summary and review of the above paper INTRODUCTION:  Craddock’s paper emphasises the strong similarities between tryptophan complexes in microtubules and quantum coherent energy transfer in photosynthesis, a connection which is dumbed out in most discussions of quantum biology. The microtubules are themselves closely connected to mitochondria; Read more […]

Decision neuroscience

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Hierarchical competitions subserving multi-attribute choice Lawrence Hunt, Raymond Dolan, Timothy Behrens, University College London, University of Oxford Nature Neuroscience, Vol. 17, No. 11, November 2014 www.nature.com/neuro Summary and review of the above paper In decision neuroscience, the different attributes of competing possible options are assumed to be assimilated into unitary values. This system has the advantage of allowing comparison of incommensurable items. The authors argue Read more […]

Emotional valence

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Visualising an emotional valence map in the limbic forebrain Jianbo Xiu et al, Chinese Academy of Sciences Nature Neuroscience, Vol. 17, No. 11, November 2014 www.nature.com/neuro Summary and review of the above paper The representation of emotional valences in the brain has long been regarded as a fundamental problem. Emotions are categorised along two dimensions, firstly valence or value ranging from negative to positive, and secondly, salience or intensity ranging from weak to strong. This Read more […]

The brain and navigation

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A local anchor for the brain’s compass Martin J. Chadwick & Hugo J. Spiers, University College London, based on Marchette et al (2014) :: Nature Neuroscience, Vol. 17, No. 11, November 2014 :: www.nature.com/neuro  Summary and review of the above article INTRODUCTION: This study looks at neurons dealing with head direction and also location that are centred on the medial parietal cortex. However, it is admitted that both these neurons and the better known place cells provided only Read more […]

Pain and consciousness

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Pain and the PAG (periaqueductal grey matter): learning from painful mistakes Falk Eippert & Irene Tracey, University of Oxford, based on Roy et al, Nature Neuroscience, Vol. 17, No. 11, November 2014 :: http://www.nature.com/neuro/index.html Summary and review of the above paper INTRODUCTION: In this paper, the orbitofrontal and the anterior cingulate brain regions are seen to be at the heart of attaching value to inputs. The study contrasts the influence of rewarding stimuli on the Read more […]