Computational Neuroscience Journal Club

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• Laurence Aitchison (CBL)
• Tuesday 23 August 2016, 16:00-17:00
• Cambridge University Engineering Department, CBL, BE-438 (http://learning.eng.cam.ac.uk/Public/Directions).

If you have a question about this talk, please contact Daniel McNamee.

Laurence Aitchison will cover:

• Neuronal Modulations in Visual Cortex Are Associated with Only One of Multiple Components of Attention
• Thomas Luo, John Maunsell
• Neuron (2015)
• http://www.sciencedirect.com/science/article/pii/S0896627315004146

ABSTRACT : Neuronal signals related to visual attention are found in widespread brain regions, and these signals are generally assumed to participate in a common mechanism of attention. However, the behavioral effects of attention in detection can be separated into two distinct components: spatially selective shifts in either the criterion or sensitivity of the subject. Here we show that a paradigm used by many single-neuron studies of attention conflates behavioral changes in the subject’s criterion and sensitivity. Then, using a task designed to dissociate these two components, we found that multiple aspects of attention-related neuronal modulations in area V4 of monkey visual cortex corresponded to behavioral shifts in sensitivity, but not criterion. This result suggests that separate components of attention are associated with signals in different brain regions and that attention is not a unitary process in the brain, but instead consists of distinct neurobiological mechanisms.

This talk is part of the Computational Neuroscience series.

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