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Summary: Neuron
Article
Decoding of MSTd Population Activity Accounts for
Variations in the Precision of Heading Perception
Yong Gu,1 Christopher R. Fetsch,1 Babatunde Adeyemo,1 Gregory C. DeAngelis,2,3 and Dora E. Angelaki1,3,*
1Department of Neurobiology, Washington University School of Medicine, St. Louis, MO 63110, USA
2Department of Brain and Cognitive Sciences, University of Rochester, Rochester, NY 14642, USA
3These authors contributed equally to this work
*Correspondence: angelaki@pcg.wustl.edu
DOI 10.1016/j.neuron.2010.04.026
SUMMARY
Humans and monkeys use both vestibular and visual
motion (optic flow) cues to discriminate their direc-
tion of self-motion during navigation. A striking prop-
erty of heading perception from optic flow is that
discrimination is most precise when subjects judge
small variations in heading around straight ahead,
whereas thresholds rise precipitously when subjects
judge heading around an eccentric reference. We
show that vestibular heading discrimination thresh-
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