Transcranial direct current stimulation augments perceptual sensitivity and 24-hour retention in a complex threat detection task.
We have previously shown that transcranial direct current stimulation (tDCS) improved performance of a complex visual perceptual learning task (Clark et al. 2012). However, it is not known whether tDCS can enhance perceptual sensitivity independently of non-specific, arousal-linked changes in respon...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3325218?pdf=render |
| _version_ | 1818277829991727104 |
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| author | Brian Falcone Brian A Coffman Vincent P Clark Raja Parasuraman |
| author_facet | Brian Falcone Brian A Coffman Vincent P Clark Raja Parasuraman |
| author_sort | Brian Falcone |
| collection | DOAJ |
| description | We have previously shown that transcranial direct current stimulation (tDCS) improved performance of a complex visual perceptual learning task (Clark et al. 2012). However, it is not known whether tDCS can enhance perceptual sensitivity independently of non-specific, arousal-linked changes in response bias, nor whether any such sensitivity benefit can be retained over time. We examined the influence of stimulation of the right inferior frontal cortex using tDCS on perceptual learning and retention in 37 healthy participants, using signal detection theory to distinguish effects on perceptual sensitivity (d') from response bias (ß). Anodal stimulation with 2 mA increased d', compared to a 0.1 mA sham stimulation control, with no effect on ß. On completion of training, participants in the active stimulation group had more than double the perceptual sensitivity of the control group. Furthermore, the performance enhancement was maintained for 24 hours. The results show that tDCS augments both skill acquisition and retention in a complex detection task and that the benefits are rooted in an improvement in sensitivity (d'), rather than changes in response bias (ß). Stimulation-driven acceleration of learning and its retention over 24 hours may result from increased activation of prefrontal cortical regions that provide top-down attentional control signals to object recognition areas. |
| first_indexed | 2024-12-12T23:07:46Z |
| format | Article |
| id | doaj.art-944b51b7fae14defa491a741cd34f727 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-12T23:07:46Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-944b51b7fae14defa491a741cd34f7272022-12-22T00:08:40ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0174e3499310.1371/journal.pone.0034993Transcranial direct current stimulation augments perceptual sensitivity and 24-hour retention in a complex threat detection task.Brian FalconeBrian A CoffmanVincent P ClarkRaja ParasuramanWe have previously shown that transcranial direct current stimulation (tDCS) improved performance of a complex visual perceptual learning task (Clark et al. 2012). However, it is not known whether tDCS can enhance perceptual sensitivity independently of non-specific, arousal-linked changes in response bias, nor whether any such sensitivity benefit can be retained over time. We examined the influence of stimulation of the right inferior frontal cortex using tDCS on perceptual learning and retention in 37 healthy participants, using signal detection theory to distinguish effects on perceptual sensitivity (d') from response bias (ß). Anodal stimulation with 2 mA increased d', compared to a 0.1 mA sham stimulation control, with no effect on ß. On completion of training, participants in the active stimulation group had more than double the perceptual sensitivity of the control group. Furthermore, the performance enhancement was maintained for 24 hours. The results show that tDCS augments both skill acquisition and retention in a complex detection task and that the benefits are rooted in an improvement in sensitivity (d'), rather than changes in response bias (ß). Stimulation-driven acceleration of learning and its retention over 24 hours may result from increased activation of prefrontal cortical regions that provide top-down attentional control signals to object recognition areas.http://europepmc.org/articles/PMC3325218?pdf=render |
| spellingShingle | Brian Falcone Brian A Coffman Vincent P Clark Raja Parasuraman Transcranial direct current stimulation augments perceptual sensitivity and 24-hour retention in a complex threat detection task. PLoS ONE |
| title | Transcranial direct current stimulation augments perceptual sensitivity and 24-hour retention in a complex threat detection task. |
| title_full | Transcranial direct current stimulation augments perceptual sensitivity and 24-hour retention in a complex threat detection task. |
| title_fullStr | Transcranial direct current stimulation augments perceptual sensitivity and 24-hour retention in a complex threat detection task. |
| title_full_unstemmed | Transcranial direct current stimulation augments perceptual sensitivity and 24-hour retention in a complex threat detection task. |
| title_short | Transcranial direct current stimulation augments perceptual sensitivity and 24-hour retention in a complex threat detection task. |
| title_sort | transcranial direct current stimulation augments perceptual sensitivity and 24 hour retention in a complex threat detection task |
| url | http://europepmc.org/articles/PMC3325218?pdf=render |
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