Trends in Cognitive Sciences
ForumNeural Antecedents of Spontaneous Voluntary Movement: A New Perspective
Section snippets
Acknowledgment
A.S. was supported by a Starting Grant from the European Research Council under the Horizon 2020 Framework (grant #640626).
Glossary
- Bounded integration
- also known as integration to bound or evidence accumulation, the term refers to a computational model of decision making wherein sensory evidence and internal noise (both in the form of neuronal activity) are integrated over time by one or more decision neurons until a fixed threshold-level firing rate is reached, at which point the animal issues a motor response. In the case of spontaneous self-initiated movement there is no sensory evidence, so the process is dominated by
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2021, Trends in Cognitive SciencesCitation Excerpt :While this decrease in variance over time leading up to movement onset may seem to be a compelling sign that the motor system is preparing a movement, it is no more compelling than the profile of the RP itself, which had seemed like incontrovertible evidence of preparation until the SDM provided an alternative, arguably more compelling, interpretation. A change in some variable (whether the mean or variance) in advance of an event, however compelling it may seem, does not entail a process of intentional preparation for that event [42]. Future studies may clarify these issues.
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