Frank, Sebastian M. and Greenlee, Mark W. and Tse, Peter U. (2018) Long Time No See: Enduring Behavioral and Neuronal Changes in Perceptual Learning of Motion Trajectories 3 Years After Training. CEREBRAL CORTEX, 28 (4). pp. 1260-1271. ISSN 1047-3211, 1460-2199
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Here, we report on the long-term stability of changes in behavior and brain activity following perceptual learning of conjunctions of simple motion features. Participants were trained for 3 weeks on a visual search task involving the detection of a dot moving in a "v"-shaped target trajectory among inverted "v"-shaped distractor trajectories. The first and last training sessions were carried out during functional magnetic resonance imaging (fMRI). Learning stability was again examined behaviorally and using fMRI 3 years after the end of training. Results show that acquired behavioral improvements were remarkably stable over time and that these changes were specific to trained target and distractor trajectories. A similar pattern was observed on the neuronal level, when the representation of target and distractor stimuli was examined in early retinotopic visual cortex (V1-V3): training enhanced activity for the target relative to the surrounding distractors in the search array and this enhancement persisted after 3 years. However, exchanging target and distractor trajectories abolished both neuronal and behavioral effects, suggesting that training-induced changes in stimulus representation are specific to trained stimulus identities.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SURFACE-BASED ANALYSIS; HUMAN CEREBRAL-CORTEX; HUMAN VISUAL-CORTEX; NEURAL MECHANISMS; SEARCH; AREAS; TASK; IDENTIFICATION; PLASTICITY; PATTERNS; area MT+ (V5); long-term stability; perceptual learning; early visual cortex; visual search |
| Subjects: | 100 Philosophy & psychology > 150 Psychology |
| Divisions: | Psychology and Pedagogy > Institut für Psychologie Psychology and Pedagogy > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 11 Mar 2020 10:13 |
| Last Modified: | 11 Mar 2020 10:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14845 |
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