INVESTIGATION OF THE NON-MARKOVITY SPECTRUM AS A COGNITIVE PROCESSING MEASURE OF DEEP BRAIN MICROELECTRODE RECORDINGS

P. A. Meehan, P. A. Bellette, A. P. Bradley, J. E. Castner, H. J. Chenery, D. A. Copland, J. D. Varghese, T. Coyne, P. A. Silburn

Abstract

Previous research has shown that changes in complexity-based measures of deep brain (DB) microelectrode recordings (MER) from conscious human patients, show correlations with different linguistic tasks. These statistical mechanics based measures are further expanded in this research to look at the spectra of an adapted non-Markovity parameter in different frequency ranges as a measure of synchronous neuronal networked behaviour. Results presented show statistically significant interaction between hemisphere of recording, epoch of brain function and semantic category in the fast frequency range (80-200Hz). Processing of similar semantic words appeared to be associated with increased synchrony in the left hand hemisphere. Evidence for substantial left and right hemispherical interactions was found. Similar, but less important trends were found in the beta band (10-30Hz). Significant but less specific correlations were also found in the theta (4-10Hz) and gamma (30-80Hz) frequency bands.

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Paper Citation


in Harvard Style

Meehan P., Bellette P., Bradley A., Castner J., Chenery H., Copland D., Varghese J., Coyne T. and Silburn P. (2011). INVESTIGATION OF THE NON-MARKOVITY SPECTRUM AS A COGNITIVE PROCESSING MEASURE OF DEEP BRAIN MICROELECTRODE RECORDINGS . In Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2011) ISBN 978-989-8425-35-5, pages 144-150. DOI: 10.5220/0003133001440150


in Bibtex Style

@conference{biosignals11,
author={P. A. Meehan and P. A. Bellette and A. P. Bradley and J. E. Castner and H. J. Chenery and D. A. Copland and J. D. Varghese and T. Coyne and P. A. Silburn},
title={INVESTIGATION OF THE NON-MARKOVITY SPECTRUM AS A COGNITIVE PROCESSING MEASURE OF DEEP BRAIN MICROELECTRODE RECORDINGS},
booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2011)},
year={2011},
pages={144-150},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003133001440150},
isbn={978-989-8425-35-5},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2011)
TI - INVESTIGATION OF THE NON-MARKOVITY SPECTRUM AS A COGNITIVE PROCESSING MEASURE OF DEEP BRAIN MICROELECTRODE RECORDINGS
SN - 978-989-8425-35-5
AU - Meehan P.
AU - Bellette P.
AU - Bradley A.
AU - Castner J.
AU - Chenery H.
AU - Copland D.
AU - Varghese J.
AU - Coyne T.
AU - Silburn P.
PY - 2011
SP - 144
EP - 150
DO - 10.5220/0003133001440150