Neural gain induced by startling acoustic stimuli is additive to preparatory activation
© 2019 Society for Psychophysiological Research Loud acoustic stimuli presented during movement preparation can shorten reaction time and increase response forcefulness. We examined how efferent connectivity of an agonist muscle to reticulospinal and corticospinal pathways, and the level of prep...
| Main Authors: | , , , , |
|---|---|
| Format: | Journal Article |
| Language: | English |
| Published: |
WILEY
2020
|
| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DP160102001 http://hdl.handle.net/20.500.11937/79230 |
| _version_ | 1848764016381394944 |
|---|---|
| author | McInnes, Aaron Corti, Emily Tresilian, J.R. Lipp, Ottmar Marinovic, Welber |
| author_facet | McInnes, Aaron Corti, Emily Tresilian, J.R. Lipp, Ottmar Marinovic, Welber |
| author_sort | McInnes, Aaron |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2019 Society for Psychophysiological Research
Loud acoustic stimuli presented during movement preparation can shorten reaction time and increase response forcefulness. We examined how efferent connectivity of an agonist muscle to reticulospinal and corticospinal pathways, and the level of prepared movement force, affect reaction time and movement execution when the motor response is triggered by an intense acoustic stimulus. In Experiment 1, participants executed ballistic wrist flexion and extension movements of low and high force in response to visual stimuli. A loud acoustic stimulus (LAS; 105 dBa) was presented simultaneously with the visual imperative stimulus in probe trials. In Experiment 2, participants executed ballistic wrist flexion movements ranging from 10%–50% of maximum voluntary contraction with a LAS presented in probe trials. The shortening of response initiation was not affected by movement type (flexion or extension) or prepared movement force. Enhancement of response magnitude, however, was proportionally greater for low force movements and for the flexor muscle. Changes in peak force induced by the intense acoustic stimulus indicated that the neural activity introduced to motor program circuits by acoustic stimulation is additive to the voluntary neural activity that occurs due to movement preparation, rather than multiplicative. |
| first_indexed | 2025-11-14T11:12:39Z |
| format | Journal Article |
| id | curtin-20.500.11937-79230 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:12:39Z |
| publishDate | 2020 |
| publisher | WILEY |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-792302022-10-27T04:15:33Z Neural gain induced by startling acoustic stimuli is additive to preparatory activation McInnes, Aaron Corti, Emily Tresilian, J.R. Lipp, Ottmar Marinovic, Welber Social Sciences Science & Technology Life Sciences & Biomedicine Psychology, Biological Neurosciences Physiology Psychology Psychology, Experimental Neurosciences & Neurology force motor control movement preparation muscle reaction time StartReact effect REACTION-TIME PYRAMIDAL TRACT MUSCLE-ACTIVITY MOTOR ACTIONS MOVEMENT FINGER RESPONSES HEALTHY SOUNDS FORCE © 2019 Society for Psychophysiological Research Loud acoustic stimuli presented during movement preparation can shorten reaction time and increase response forcefulness. We examined how efferent connectivity of an agonist muscle to reticulospinal and corticospinal pathways, and the level of prepared movement force, affect reaction time and movement execution when the motor response is triggered by an intense acoustic stimulus. In Experiment 1, participants executed ballistic wrist flexion and extension movements of low and high force in response to visual stimuli. A loud acoustic stimulus (LAS; 105 dBa) was presented simultaneously with the visual imperative stimulus in probe trials. In Experiment 2, participants executed ballistic wrist flexion movements ranging from 10%–50% of maximum voluntary contraction with a LAS presented in probe trials. The shortening of response initiation was not affected by movement type (flexion or extension) or prepared movement force. Enhancement of response magnitude, however, was proportionally greater for low force movements and for the flexor muscle. Changes in peak force induced by the intense acoustic stimulus indicated that the neural activity introduced to motor program circuits by acoustic stimulation is additive to the voluntary neural activity that occurs due to movement preparation, rather than multiplicative. 2020 Journal Article http://hdl.handle.net/20.500.11937/79230 10.1111/psyp.13493 English http://purl.org/au-research/grants/arc/DP160102001 WILEY fulltext |
| spellingShingle | Social Sciences Science & Technology Life Sciences & Biomedicine Psychology, Biological Neurosciences Physiology Psychology Psychology, Experimental Neurosciences & Neurology force motor control movement preparation muscle reaction time StartReact effect REACTION-TIME PYRAMIDAL TRACT MUSCLE-ACTIVITY MOTOR ACTIONS MOVEMENT FINGER RESPONSES HEALTHY SOUNDS FORCE McInnes, Aaron Corti, Emily Tresilian, J.R. Lipp, Ottmar Marinovic, Welber Neural gain induced by startling acoustic stimuli is additive to preparatory activation |
| title | Neural gain induced by startling acoustic stimuli is additive to preparatory activation |
| title_full | Neural gain induced by startling acoustic stimuli is additive to preparatory activation |
| title_fullStr | Neural gain induced by startling acoustic stimuli is additive to preparatory activation |
| title_full_unstemmed | Neural gain induced by startling acoustic stimuli is additive to preparatory activation |
| title_short | Neural gain induced by startling acoustic stimuli is additive to preparatory activation |
| title_sort | neural gain induced by startling acoustic stimuli is additive to preparatory activation |
| topic | Social Sciences Science & Technology Life Sciences & Biomedicine Psychology, Biological Neurosciences Physiology Psychology Psychology, Experimental Neurosciences & Neurology force motor control movement preparation muscle reaction time StartReact effect REACTION-TIME PYRAMIDAL TRACT MUSCLE-ACTIVITY MOTOR ACTIONS MOVEMENT FINGER RESPONSES HEALTHY SOUNDS FORCE |
| url | http://purl.org/au-research/grants/arc/DP160102001 http://hdl.handle.net/20.500.11937/79230 |