Corollary discharge across the animal kingdom.
Abstract
Our movements can hinder our ability to sense the world. Movements can induce sensory
input (for example, when you hit something) that is indistinguishable from the input
that is caused by external agents (for example, when something hits you). It is critical
for nervous systems to be able to differentiate between these two scenarios. A ubiquitous
strategy is to route copies of movement commands to sensory structures. These signals,
which are referred to as corollary discharge (CD), influence sensory processing in
myriad ways. Here we review the CD circuits that have been uncovered by neurophysiological
studies and suggest a functional taxonomic classification of CD across the animal
kingdom. This broad understanding of CD circuits lays the groundwork for more challenging
studies that combine neurophysiology and psychophysics to probe the role of CD in
perception.
Type
Journal articleSubject
Action PotentialsAnimals
Central Nervous System
Motor Neurons
Movement
Neural Pathways
Neurons, Afferent
Perception
Peripheral Nervous System
Sensation
Synaptic Transmission
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https://hdl.handle.net/10161/11737Published Version (Please cite this version)
10.1038/nrn2457Publication Info
Crapse, Trinity B; & Sommer, Marc A (2008). Corollary discharge across the animal kingdom. Nat Rev Neurosci, 9(8). pp. 587-600. 10.1038/nrn2457. Retrieved from https://hdl.handle.net/10161/11737.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Show full item recordScholars@Duke
Marc A. Sommer
Associate Professor of Biomedical Engineering
We study circuits for cognition. Using a combination of neurophysiology and biomedical
engineering, we focus on the interaction between brain areas during visual perception,
decision-making, and motor planning. Specific projects include the role of frontal
cortex in metacognition, the role of cerebellar-frontal circuits in action timing,
the neural basis of "good enough" decision-making (satisficing), and the neural mechanisms
of transcranial magnetic stimulation (TMS).

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