3D-EEG rhythm mapping during flash stimulation using Zero-Crossings analysis

M. Nakagawa, H. Tsai, B. He

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

An experiment was conducted to map the 3D electroencephalogram (EEG) rhythms using the Zero-Crossings analysis (ZCA) method. The EEGs of five healthy volunteers were recorded during relaxed eye-closed state with flash light stimulation. These EEG signals were filtered for the alpha band using a fast Fourier transform based digital filter. From threshold Zero-Crossing points, periodic intervals of the alpha waves were determined and converted to instantaneous frequencies. The spatial dynamics of the alpha rhythm during flash stimulation using over-minute recordings were observed. It was found that 3D-EEG rhythm mapping is useful in the investigation of cortical structures and the interaction of the underlying rhythmic activity.

Original languageEnglish (US)
Pages (from-to)1536-1539
Number of pages4
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume4
StatePublished - 1997
EventProceedings of the 1997 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Chicago, IL, USA
Duration: Oct 30 1997Nov 2 1997

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