Proprioceptive movement illusions due to prolonged stimulation: reversals and aftereffects.
<h4>Background</h4>Adaptation to constant stimulation has often been used to investigate the mechanisms of perceptual coding, but the adaptive processes within the proprioceptive channels that encode body movement have not been well described. We investigated them using vibration as a st...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2007-10-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0001037 |
| _version_ | 1818735922912428032 |
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| author | Tatjana Seizova-Cajic Janette L Smith Janet L Taylor Simon C Gandevia |
| author_facet | Tatjana Seizova-Cajic Janette L Smith Janet L Taylor Simon C Gandevia |
| author_sort | Tatjana Seizova-Cajic |
| collection | DOAJ |
| description | <h4>Background</h4>Adaptation to constant stimulation has often been used to investigate the mechanisms of perceptual coding, but the adaptive processes within the proprioceptive channels that encode body movement have not been well described. We investigated them using vibration as a stimulus because vibration of muscle tendons results in a powerful illusion of movement.<h4>Methodology/principal findings</h4>We applied sustained 90 Hz vibratory stimulation to biceps brachii, an elbow flexor and induced the expected illusion of elbow extension (in 12 participants). There was clear evidence of adaptation to the movement signal both during the 6-min long vibration and on its cessation. During vibration, the strong initial illusion of extension waxed and waned, with diminishing duration of periods of illusory movement and occasional reversals in the direction of the illusion. After vibration there was an aftereffect in which the stationary elbow seemed to move into flexion. Muscle activity shows no consistent relationship with the variations in perceived movement.<h4>Conclusion</h4>We interpret the observed effects as adaptive changes in the central mechanisms that code movement in direction-selective opponent channels. |
| first_indexed | 2024-12-18T00:28:57Z |
| format | Article |
| id | doaj.art-13f67835eb2548cd9d1c7e60b77f2fc6 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-18T00:28:57Z |
| publishDate | 2007-10-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-13f67835eb2548cd9d1c7e60b77f2fc62022-12-21T21:27:11ZengPublic Library of Science (PLoS)PLoS ONE1932-62032007-10-01210e103710.1371/journal.pone.0001037Proprioceptive movement illusions due to prolonged stimulation: reversals and aftereffects.Tatjana Seizova-CajicJanette L SmithJanet L TaylorSimon C Gandevia<h4>Background</h4>Adaptation to constant stimulation has often been used to investigate the mechanisms of perceptual coding, but the adaptive processes within the proprioceptive channels that encode body movement have not been well described. We investigated them using vibration as a stimulus because vibration of muscle tendons results in a powerful illusion of movement.<h4>Methodology/principal findings</h4>We applied sustained 90 Hz vibratory stimulation to biceps brachii, an elbow flexor and induced the expected illusion of elbow extension (in 12 participants). There was clear evidence of adaptation to the movement signal both during the 6-min long vibration and on its cessation. During vibration, the strong initial illusion of extension waxed and waned, with diminishing duration of periods of illusory movement and occasional reversals in the direction of the illusion. After vibration there was an aftereffect in which the stationary elbow seemed to move into flexion. Muscle activity shows no consistent relationship with the variations in perceived movement.<h4>Conclusion</h4>We interpret the observed effects as adaptive changes in the central mechanisms that code movement in direction-selective opponent channels.https://doi.org/10.1371/journal.pone.0001037 |
| spellingShingle | Tatjana Seizova-Cajic Janette L Smith Janet L Taylor Simon C Gandevia Proprioceptive movement illusions due to prolonged stimulation: reversals and aftereffects. PLoS ONE |
| title | Proprioceptive movement illusions due to prolonged stimulation: reversals and aftereffects. |
| title_full | Proprioceptive movement illusions due to prolonged stimulation: reversals and aftereffects. |
| title_fullStr | Proprioceptive movement illusions due to prolonged stimulation: reversals and aftereffects. |
| title_full_unstemmed | Proprioceptive movement illusions due to prolonged stimulation: reversals and aftereffects. |
| title_short | Proprioceptive movement illusions due to prolonged stimulation: reversals and aftereffects. |
| title_sort | proprioceptive movement illusions due to prolonged stimulation reversals and aftereffects |
| url | https://doi.org/10.1371/journal.pone.0001037 |
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