Posts Tagged ‘decision making’

Ventromedial prefrontal

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This study shows that human decision-makers adapt their level of persistence in waiting for rewards to the environment in which the decision is being made. Neural signalling in the ventromedial prefrontal, an area involved with evaluation, could evolve differently for identical time delays, if there is a difference in the environment. The neural valuation system is here seen as including the ventromedial prefrontal (VMPFC), the ventral striatum (VS) and the posterior cingulate cortex

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 […]

Far from the madding brain

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The Robotics Primer Maja J. Mataric MIT Press (2007) Summary and review of this book Introduction:  In the 1960s and 1970s there was an emphasis on building robots that thought, reasoned or deliberated in the manner of humans. The computational load involved made the robots too slow for real world conditions. Since then, and despite the Moore’s law increase in computing power, robotocists have moved away from from anything that has a close resemblance to the human brain. The most common Read more […]

Spacetime and decisions

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Spacetime and decisions From the webmaster Keywords: Spacetime, decision-making, emotion, freewill There is something like a consensus in physics that spacetime is discrete rather than continuous. This would appear to mean that spacetime is something like a network or web having pattern, and therefore capable of representing or conveying information. Clearly there is no evolutionary advantage in expending energy accessing the spacetime level, if it only does the same kind of logic or Read more […]

Decision making, determinism and consciousness

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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

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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 […]

Dopamine and decisions

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Dopamine and conscious decision making Anthony Grace In:- New Horizons in the Neuroscience of Consciousness This chapter discusses the interaction of the prefrontal cortex, the ventral subiculum in the hippocampal region and the dopamine system. These interact in particular in the nucleus accumbens area of the basal ganglia. This is important with respect to their role in decision making and behavioural responses. Dopamine also helps to establish long-term potentiation (LTP) or long-term Read more […]

Reward/punishment learning

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Memory, Attention & Decision-Making (Chapter 3. Reward and punishment-related learning; emotion and motivation) Edmund Rolls, Oxford University Oxford University Press (2008) INTRODUCTION: Neuroscience and Freewill:  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 Read more […]

Decision making & consciousness

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Noise in the brain, decision making, determinism, free will and consciousness Edmund Rolls In:- 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 […]