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SUMMARY:Computational Neuroscience Journal Club - Laurence Aitchison (CBL)
DTSTART:20160823T150000Z
DTEND:20160823T160000Z
UID:TALK67141@talks.cam.ac.uk
CONTACT:Daniel McNamee
DESCRIPTION:Laurence Aitchison will cover:\n\n* Neuronal Modulations in Vi
 sual Cortex Are Associated with Only One of Multiple Components of Attenti
 on\n* Thomas Luo\, John Maunsell\n* Neuron (2015)\n* http://www.sciencedir
 ect.com/science/article/pii/S0896627315004146\n\nABSTRACT:\nNeuronal signa
 ls 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 c
 an be separated into two distinct components: spatially selective shifts i
 n either the criterion or sensitivity of the subject. Here we show that a 
 paradigm used by many single-neuron studies of attention conflates behavio
 ral changes in the subject’s criterion and sensitivity. Then\, using a t
 ask designed to dissociate these two components\, we found that multiple a
 spects of attention-related neuronal modulations in area V4 of monkey visu
 al cortex corresponded to behavioral shifts in sensitivity\, but not crite
 rion. This result suggests that separate components of attention are assoc
 iated with signals in different brain regions and that attention is not a 
 unitary process in the brain\, but instead consists of distinct neurobiolo
 gical mechanisms.
LOCATION:Cambridge University Engineering Department\, CBL\, BE-438 (http:
 //learning.eng.cam.ac.uk/Public/Directions)
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