Noise reduction in an electrophysiological signal

摘要

Physiological measuring instruments can detect and produce an electrophysiological signal from the physiological response of a biological subject (e.g., a human, an animal, or the like) to stimulus. For example, an electrode in electrical contact with an eye of a human or an animal can detect and produce an electrophysiological signal from the biological response of the eye to light stimulus. One or more noise components in the electrophysiological signal can be reduced by estimating the noise component(s) and then subtracting the estimated noise component(s) from the detected electrophysiological signal.

主权项

1. A process of reducing noise in an electrophysiological signal, said process comprising:
stimulating a physiological response in a subject; sensing with an electrode in contact with said subject an electrophysiological signal produced by said subject in response to said stimulating; estimating a noise component of said electrophysiological signal; and subtracting said estimated noise component from said electrophysiological signal.