Title :
Topographic mapping of single sweep evoked potentials in the brain
Author :
Liberati, D. ; DiCorrado, Stefano ; Mandelli, Stefano
Author_Institution :
Politecnico di Milano, Italy
Abstract :
Single-trial analysis of brain-evoked potentials via stochastic parametric identification and filtering is here extended to multichannel recordings, leading to the topographic mapping of the brain activity elicited by a single stimulus, instead of the usual averaged mapping. The temporal dynamics of the subsequent sweeps in the protocol of a neurophysiologic experiment can thus be recovered and quantified also on its spatial characteristic.
Keywords :
bioelectric potentials; brain; somatosensory phenomena; vision; averaged mapping; brain; filtering; multichannel recordings; neurophysiologic experiment; single stimulus; single sweep evoked potentials; single-trial analysis; spatial characteristic; stochastic parametric identification; temporal dynamics; topographic mapping; Brain; Electrodes; Electromagnetic coupling; Electromagnetic fields; Filtering; Interpolation; Protocols; Skull; Stochastic processes; Surface topography; Brain Mapping; Evaluation Studies as Topic; Evoked Potentials, Somatosensory; Evoked Potentials, Visual; Humans; Linear Models; Signal Processing, Computer-Assisted;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
