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ISSN : 1226-9654

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Vol.5

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A Differential Amplifier for Extracellular Recording

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
1993, v.5, pp.114-120
Kang-Joon Lee (Korea University)
Hyun-Taek Kim (Korea University)
Lee, K., & Kim, H. (1993). A Differential Amplifier for Extracellular Recording. The Korean Journal of Cognitive and Biological Psychology, 5, 114-120.

Abstract

An amplifier was designed for extracellular recording of unit activity. It consists of a head stage amplifier and a postamplifier. The head stage amplifier and the postamplifier have differential input circuits. The amplifier had a high common mode rejection ratio(CMRR), well-defined gains, a low noise character, and a wide dynamic range. Multiple unit activity(MUA) and single unit activity(SUA) could be recorded satisfactorily in animals with the chronically implanted metal electrode and with the acute micropipette electrode in the brain.

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The Korean Journal of Cognitive and Biological Psychology

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