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Curr Opin Neurobiol. 2016 Apr;37:126-132. doi: 10.1016/j.conb.2016.01.009. Epub 2016 Feb 27.

Feedforward and feedback sources of choice probability in neural population responses.

Author information

1
National Eye Institute, National Institutes of Health, Bethesda, MD, USA. Electronic address: bgc@lsr.nei.nih.gov.
2
Werner Reichardt Centre for Integrative Neuroscience, University of Tuebingen, 72076 Tuebingen, Germany. Electronic address: hendrikje.nienborg@cin.uni-tuebingen.de.

Abstract

How the processing of signals carried by sensory neurons supports perceptual decisions is a long-standing question in neuroscience. The ability to record neuronal activity in awake animals while they perform psychophysical tasks near threshold has been a key advance in studying these questions. Trial-to-trial correlations between the activity of sensory neurons and the decisions reported by animals ('choice probabilities'), even when measured across repeated presentations of an identical stimulus provide insights into this problem. But understanding the sources of such co-variability between sensory neurons and behavior has proven more difficult than it initially appeared. Below, we discuss our current understanding of what gives rise to these correlations.

PMID:
26922005
PMCID:
PMC4927695
DOI:
10.1016/j.conb.2016.01.009
[Indexed for MEDLINE]
Free PMC Article

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