Brain-state modeling using electroencephalography: Application to adaptive closed-loop neuromodulation for epilepsy
Johnson, G. W.; Doss, D. J.; Makhoul, G. S.; Cai, L. Y.; Bibro, C. E.; Paulo, D. L.; Reddy, S. B.; Naftel, R. P.; Haas, K. F.; Wallace, M. T.; Dawant, B. M.; Crudele, A. N.; Morgan, V. L.; Constantinidis, C.; Williams Roberson, S.; Bick, S. K.; Englot, D. J.
Show abstract
The progress of developing an effective closed-loop neuromodulation system for many neurological pathologies is hindered by the difficulties in accurately capturing a useful representation of a brains instantaneous functional state. Existing approaches rely on expert labeling of electroencephalography data to develop biomarkers of neurophysiological pathology. These techniques do not capture the highly complex functional states of the brain that are presumed to exist between labeled states or allow for the likely possibility of variation among identically labeled states. Thus, we propose BrainState, a self-supervised technique to model an arbitrarily complex instantaneous functional state of a brain using neural multivariate timeseries data. Application of BrainState to intracranial electroencephalography data from patients with epilepsy was able to capture diverse pre-seizure states and quantify nuanced effects of neuromodulation. We anticipate that BrainState will enable the development of sophisticated closed-loop neuromodulation systems for a diverse array of neurological pathologies.
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