Use of non-linear EEG analysis to study abnormal brain dynamics in deaf human subjects

S Micheloyannis, C J Stam, E Fountoulakis, M Bourkas, S Arvanitis, E Papanikolaou

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Abstract

We compared the cortical dynamics of deaf subjects to those of control subjects at rest with eyes closed and during reading with the help of a non-linear prediction statistic. This method is suitable for short-term noisy time series such as electroencephalographic signals. Furthermore, we used surrogate data to test for non-linear dynamics underlying the electroencephalographic time series recorded. Our results indicate that significant non-linearity accompanies cortical activation during reading. This is more diffuse in deaf subjects and could be due to the widespread reorganization of their cerebral cortex. Predictability was lower in deaf subjects at rest, which indicates their increased 'readiness' in the resting condition. Finally, our results indicate that normal and deaf subjects differ significantly in terms of cortical dynamics.

Original languageEnglish
Pages (from-to)167-71
Number of pages5
JournalNeuroscience Letters
Volume249
Issue number2-3
Publication statusPublished - 19 Jun 1998

Cite this

Micheloyannis, S., Stam, C. J., Fountoulakis, E., Bourkas, M., Arvanitis, S., & Papanikolaou, E. (1998). Use of non-linear EEG analysis to study abnormal brain dynamics in deaf human subjects. Neuroscience Letters, 249(2-3), 167-71.