No Enhancement of 24-Hour Visuomotor Skill Retention by Post-Practice Caffeine Administration.
Caffeine is widely consumed throughout the world and appears to indirectly facilitate learning and memory through effects on attention and motivation. Animal work indicates that post-training caffeine administration augments inhibitory avoidance memory, spatial memory, and object memory. In humans,...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2015-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC4459824?pdf=render |
| _version_ | 1828355031166877696 |
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| author | Sara J Hussain Kelly J Cole |
| author_facet | Sara J Hussain Kelly J Cole |
| author_sort | Sara J Hussain |
| collection | DOAJ |
| description | Caffeine is widely consumed throughout the world and appears to indirectly facilitate learning and memory through effects on attention and motivation. Animal work indicates that post-training caffeine administration augments inhibitory avoidance memory, spatial memory, and object memory. In humans, post-training caffeine administration enhances the ability to discern between familiar images and new, similar images. However, the effect of post-training caffeine administration on motor memory has not been examined. Therefore, we tested two groups of low caffeine consumers (average weekly consumption ≤500 mg) in a double-blind, placebo-controlled study involving acquisition of a continuous isometric visuomotor tracking skill. On Day 1, subjects completed 5 blocks (150 repetitions) of training on the continuous isometric visuomotor skill and subsequently ingested either 200 mg of caffeine or placebo. On day 2, subjects completed an additional 5 blocks of training. Day 1 mean performance and performance variability were both similar between groups, suggesting that both groups acquired the motor skill similarly. For mean performance on Day 2, patterns of re-learning, mean performance learning magnitudes, mean performance learning rates, and mean performance retention magnitudes were all similar between groups. For performance variability on Day 2, there was a small trend towards increased variability in the caffeine group during re-learning, but performance variability learning magnitudes and performance variability retention magnitudes did not differ between groups. Because motor skill acquisition can also be conceptualized as a reduction in performance variability, these results suggest that there may be a small negative effect of post-practice caffeine administration on memory of a newly-learned visuomotor skill. Overall, we found no evidence to suggest that post-training caffeine administration enhances 24-hour retention of a newly-learned continuous visuomotor skill, and these results support the notion that memory-enhancing effects of post-training caffeine ingestion may be task-specific. |
| first_indexed | 2024-04-14T02:34:37Z |
| format | Article |
| id | doaj.art-9e8cd1b8c31146d08a04f7ba949dd467 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-14T02:34:37Z |
| publishDate | 2015-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-9e8cd1b8c31146d08a04f7ba949dd4672022-12-22T02:17:31ZengPublic Library of Science (PLoS)PLoS ONE1932-62032015-01-01106e012954310.1371/journal.pone.0129543No Enhancement of 24-Hour Visuomotor Skill Retention by Post-Practice Caffeine Administration.Sara J HussainKelly J ColeCaffeine is widely consumed throughout the world and appears to indirectly facilitate learning and memory through effects on attention and motivation. Animal work indicates that post-training caffeine administration augments inhibitory avoidance memory, spatial memory, and object memory. In humans, post-training caffeine administration enhances the ability to discern between familiar images and new, similar images. However, the effect of post-training caffeine administration on motor memory has not been examined. Therefore, we tested two groups of low caffeine consumers (average weekly consumption ≤500 mg) in a double-blind, placebo-controlled study involving acquisition of a continuous isometric visuomotor tracking skill. On Day 1, subjects completed 5 blocks (150 repetitions) of training on the continuous isometric visuomotor skill and subsequently ingested either 200 mg of caffeine or placebo. On day 2, subjects completed an additional 5 blocks of training. Day 1 mean performance and performance variability were both similar between groups, suggesting that both groups acquired the motor skill similarly. For mean performance on Day 2, patterns of re-learning, mean performance learning magnitudes, mean performance learning rates, and mean performance retention magnitudes were all similar between groups. For performance variability on Day 2, there was a small trend towards increased variability in the caffeine group during re-learning, but performance variability learning magnitudes and performance variability retention magnitudes did not differ between groups. Because motor skill acquisition can also be conceptualized as a reduction in performance variability, these results suggest that there may be a small negative effect of post-practice caffeine administration on memory of a newly-learned visuomotor skill. Overall, we found no evidence to suggest that post-training caffeine administration enhances 24-hour retention of a newly-learned continuous visuomotor skill, and these results support the notion that memory-enhancing effects of post-training caffeine ingestion may be task-specific.http://europepmc.org/articles/PMC4459824?pdf=render |
| spellingShingle | Sara J Hussain Kelly J Cole No Enhancement of 24-Hour Visuomotor Skill Retention by Post-Practice Caffeine Administration. PLoS ONE |
| title | No Enhancement of 24-Hour Visuomotor Skill Retention by Post-Practice Caffeine Administration. |
| title_full | No Enhancement of 24-Hour Visuomotor Skill Retention by Post-Practice Caffeine Administration. |
| title_fullStr | No Enhancement of 24-Hour Visuomotor Skill Retention by Post-Practice Caffeine Administration. |
| title_full_unstemmed | No Enhancement of 24-Hour Visuomotor Skill Retention by Post-Practice Caffeine Administration. |
| title_short | No Enhancement of 24-Hour Visuomotor Skill Retention by Post-Practice Caffeine Administration. |
| title_sort | no enhancement of 24 hour visuomotor skill retention by post practice caffeine administration |
| url | http://europepmc.org/articles/PMC4459824?pdf=render |
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