[Extraction of rabbit somatosensory evoked potentials (SEP) with independent component analysis].
OBJECTIVE
To extract rabbit somatosensory evoked potentials (SEP), by using a new technique named independent component analysis.


METHODS
The rabbit was narcotized and stimulated with 0.5 Hz electric pulse. Potentials at scalp was sampled at 3764 Hz. Response signals to repeated stimulations for 3 times mixed with background noise was acquired at the same collection point. Independent component analysis (ICA) for SEP was established. The mixed signals were decomposed by ICA to observe the independent components.


RESULTS
Independent SEP was acquired.


CONCLUSIONS
A time lag of continuous signal source is suitable to SEP model. ICA can extract signals of SEP components.
Li
Zhang-yong
ZY
College of Bio-information, Chongqing Posts and Telecommunications University, Chongqing, China. li9547@yahoo.com.cn
Liu
Sheng-rong
SR
Xie
Zheng-xiang
ZX
D000161:Acoustic Stimulation; D000818:Animals; D004569:Electroencephalography; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D011817:Rabbits