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  Improvement and Decline in Tactile Discrimination Behavior after Cortical Plasticity Induced by Passive Tactile Coactivation

Hodzic, A., Veit, R., Karim, A., Erb, M., & Godde, B. (2004). Improvement and Decline in Tactile Discrimination Behavior after Cortical Plasticity Induced by Passive Tactile Coactivation. The Journal of Neuroscience, 24(2), 442-446. doi:10.1523/JNEUROSCI.3731-03.2004.

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Hodzic, A, Author
Veit, R1, Author              
Karim, AA, Author
Erb, M1, Author              
Godde, B, Author
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1External Organizations, ou_persistent22              

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 Abstract: Perceptual learning can be induced by passive tactile coactivation without attention or reinforcement. We used functional MRI (fMRI) and psychophysics to investigate in detail the specificity of this type of learning for different tactile discrimination tasks and the underlying cortical reorganization. We found that a few hours of Hebbian coactivation evoked a significant increase of primary (SI) and secondary (SII) somatosensory cortical areas representing the stimulated body parts. The amount of plastic changes was strongly correlated with improvement in spatial discrimination performance. However, in the same subjects, frequency discrimination was impaired after coactivation, indicating that even maladaptive processes can be induced by intense passive sensory stimulation.

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 Dates: 2004-01
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1523/JNEUROSCI.3731-03.2004
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Title: The Journal of Neuroscience
  Other : The Journal of Neuroscience: the Official Journal of the Society for Neuroscience
  Abbreviation : J. Neurosci.
Source Genre: Journal
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Publ. Info: Washington, DC : Society of Neuroscience
Pages: - Volume / Issue: 24 (2) Sequence Number: - Start / End Page: 442 - 446 Identifier: ISSN: 0270-6474
CoNE: https://pure.mpg.de/cone/journals/resource/954925502187_1