Correlation of field potentials with redox-states of cytochromes recorded from the olfactory cortical slice of guinea pig.

Field potentials and the reflection spectra of cytochromes were continuously recorded from the olfactory cortical slice of a guinea pig which was incubated under the normoxic and anoxic conditions. The reduction of the oxidated spectra of the cytochromes occurred before the decrease of field potential heights and the oxidation of the reduced spectra occurred before their recovery. In a 3 min anoxic experiment, a 90% recovery of the cytochromes aa3, b, and c, and the field potential amplitudes took place in this order after the restoration of oxygen.