Pro- and antisaccade task-switching: response suppression-and not vector inversion-contributes to a task-set inertia
Alternating between different tasks represents an executive function essential to activities of daily living. In the oculomotor literature, reaction times (RT) for a 'standard' and stimulus-driven (SD) prosaccade (i.e., saccade to target at target onset) are increased when preceded by a &#...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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Springer Nature
2019
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| _version_ | 1797108770137964544 |
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| author | Tari, B Heath, M |
| author_facet | Tari, B Heath, M |
| author_sort | Tari, B |
| collection | OXFORD |
| description | Alternating between different tasks represents an executive function essential to activities of daily living. In the oculomotor literature, reaction times (RT) for a 'standard' and stimulus-driven (SD) prosaccade (i.e., saccade to target at target onset) are increased when preceded by a 'non-standard' antisaccade (i.e., saccade mirror-symmetrical to target at target onset), whereas the converse switch does not elicit an RT cost. The prosaccade switch-cost has been attributed to lingering neural activity-or task-set inertia-related to the antisaccade executive demands of response suppression and vector inversion. It is, however, unclear whether response suppression and/or vector inversion contribute to the prosaccade switch-cost. Experiment 1 of the present work had participants alternate (i.e., AABB paradigm) between minimally delayed (MD) pro- and antisaccades. MD saccades require a response after target extinction and necessitate response suppression for both pro- and antisaccades-a paradigm providing a framework to determine whether vector inversion contributes to a task-set inertia. In Experiment 2, participants alternated between SD pro- and MD antisaccades-a paradigm designed to determine if a switch-cost is selectively imparted when a SD and standard response is preceded by a non-standard response. Experiment 1 showed that RTs for MD pro- and antisaccades were refractory to the preceding trial-type; that is, vector inversion did not engender a switch-cost. Experiment 2 indicated that RTs for SD prosaccades were increased when preceded by an MD antisaccade. Accordingly, response suppression engenders a task-set inertia but only for a subsequent stimulus-driven and standard response (i.e., SD prosaccade). Such a result is in line with the view that response suppression is a hallmark feature of executive function. |
| first_indexed | 2024-03-07T07:33:04Z |
| format | Journal article |
| id | oxford-uuid:32f9f9ef-26ca-4399-84d3-38c25f952710 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:33:04Z |
| publishDate | 2019 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:32f9f9ef-26ca-4399-84d3-38c25f9527102023-02-08T14:26:21ZPro- and antisaccade task-switching: response suppression-and not vector inversion-contributes to a task-set inertiaJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:32f9f9ef-26ca-4399-84d3-38c25f952710EnglishSymplectic ElementsSpringer Nature2019Tari, BHeath, MAlternating between different tasks represents an executive function essential to activities of daily living. In the oculomotor literature, reaction times (RT) for a 'standard' and stimulus-driven (SD) prosaccade (i.e., saccade to target at target onset) are increased when preceded by a 'non-standard' antisaccade (i.e., saccade mirror-symmetrical to target at target onset), whereas the converse switch does not elicit an RT cost. The prosaccade switch-cost has been attributed to lingering neural activity-or task-set inertia-related to the antisaccade executive demands of response suppression and vector inversion. It is, however, unclear whether response suppression and/or vector inversion contribute to the prosaccade switch-cost. Experiment 1 of the present work had participants alternate (i.e., AABB paradigm) between minimally delayed (MD) pro- and antisaccades. MD saccades require a response after target extinction and necessitate response suppression for both pro- and antisaccades-a paradigm providing a framework to determine whether vector inversion contributes to a task-set inertia. In Experiment 2, participants alternated between SD pro- and MD antisaccades-a paradigm designed to determine if a switch-cost is selectively imparted when a SD and standard response is preceded by a non-standard response. Experiment 1 showed that RTs for MD pro- and antisaccades were refractory to the preceding trial-type; that is, vector inversion did not engender a switch-cost. Experiment 2 indicated that RTs for SD prosaccades were increased when preceded by an MD antisaccade. Accordingly, response suppression engenders a task-set inertia but only for a subsequent stimulus-driven and standard response (i.e., SD prosaccade). Such a result is in line with the view that response suppression is a hallmark feature of executive function. |
| spellingShingle | Tari, B Heath, M Pro- and antisaccade task-switching: response suppression-and not vector inversion-contributes to a task-set inertia |
| title | Pro- and antisaccade task-switching: response suppression-and not vector inversion-contributes to a task-set inertia |
| title_full | Pro- and antisaccade task-switching: response suppression-and not vector inversion-contributes to a task-set inertia |
| title_fullStr | Pro- and antisaccade task-switching: response suppression-and not vector inversion-contributes to a task-set inertia |
| title_full_unstemmed | Pro- and antisaccade task-switching: response suppression-and not vector inversion-contributes to a task-set inertia |
| title_short | Pro- and antisaccade task-switching: response suppression-and not vector inversion-contributes to a task-set inertia |
| title_sort | pro and antisaccade task switching response suppression and not vector inversion contributes to a task set inertia |
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