Corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information
To intercept rapidly moving objects, people must predict the right time to initiate their actions. The timing of movement initiation in interceptions is thought to be determined when a perceptual variable specifying time to contact reaches a criterion value. If a response needs to be aborted, the pe...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
American Physiological Society
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/50361 |
| _version_ | 1848758455846830080 |
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| author | Marinovic, Welber Reid, C. Plooy, A. Riek, S. Tresilian, J. |
| author_facet | Marinovic, Welber Reid, C. Plooy, A. Riek, S. Tresilian, J. |
| author_sort | Marinovic, Welber |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | To intercept rapidly moving objects, people must predict the right time to initiate their actions. The timing of movement initiation in interceptions is thought to be determined when a perceptual variable specifying time to contact reaches a criterion value. If a response needs to be aborted, the performer must make a decision before this moment. It has been recently shown that the minimal time to suppress an anticipatory action takes longer during motion extrapolation than during continuous visual information. In experiment 1, we sought to determine whether or not the availability of visual information would 1) affect the latency to inhibit an anticipatory action, and 2) modulate the level of excitability in the motor cortex (M1). The behavioral results showed that the absence of visual information prolonged the latency to stop the movement as previously reported. The neurophysiological data indicated that corticospinal excitability levels were affected by the availability of visual information. In experiment 2, we sought to verify whether corticospinal excitability levels would also differ between the two visual conditions when the task did not involve response suppression. The results of experiment 2 indicated that excitability levels did not differ between visual conditions. Overall, our findings indicated that the buildup of motor activation can also play a role in determining different latencies to inhibit an anticipatory action. They also suggest that the buildup of motor activation in the corticospinal pathways can be strategically modulated to the requirements of the task during continuous visual information. |
| first_indexed | 2025-11-14T09:44:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-50361 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:44:16Z |
| publishDate | 2011 |
| publisher | American Physiological Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-503612017-09-13T15:41:02Z Corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information Marinovic, Welber Reid, C. Plooy, A. Riek, S. Tresilian, J. To intercept rapidly moving objects, people must predict the right time to initiate their actions. The timing of movement initiation in interceptions is thought to be determined when a perceptual variable specifying time to contact reaches a criterion value. If a response needs to be aborted, the performer must make a decision before this moment. It has been recently shown that the minimal time to suppress an anticipatory action takes longer during motion extrapolation than during continuous visual information. In experiment 1, we sought to determine whether or not the availability of visual information would 1) affect the latency to inhibit an anticipatory action, and 2) modulate the level of excitability in the motor cortex (M1). The behavioral results showed that the absence of visual information prolonged the latency to stop the movement as previously reported. The neurophysiological data indicated that corticospinal excitability levels were affected by the availability of visual information. In experiment 2, we sought to verify whether corticospinal excitability levels would also differ between the two visual conditions when the task did not involve response suppression. The results of experiment 2 indicated that excitability levels did not differ between visual conditions. Overall, our findings indicated that the buildup of motor activation can also play a role in determining different latencies to inhibit an anticipatory action. They also suggest that the buildup of motor activation in the corticospinal pathways can be strategically modulated to the requirements of the task during continuous visual information. 2011 Journal Article http://hdl.handle.net/20.500.11937/50361 10.1152/jn.00705.2010 American Physiological Society unknown |
| spellingShingle | Marinovic, Welber Reid, C. Plooy, A. Riek, S. Tresilian, J. Corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information |
| title | Corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information |
| title_full | Corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information |
| title_fullStr | Corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information |
| title_full_unstemmed | Corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information |
| title_short | Corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information |
| title_sort | corticospinal excitability during preparation for an anticipatory action is modulated by the availability of visual information |
| url | http://hdl.handle.net/20.500.11937/50361 |