Abstract
Summary
A method was developed for recording electroencephalograms of Caiman sclerops using monopolar and bipolar electrodes. Both monopolar and bipolar recordings from the telencephalon revealed a dominant alpha frequency of 7–12 cycles per second with an amplitude of 20–40 μv. A fast frequency of 18–24 cycles per second with an amplitude of 10–20 μv was sometimes seen superimposed on the alpha wave and sometimes appeared as an independent rhythm. Restraint appears to have little effect on the frequency; however, some depression in amplitude may be seen. Monopolar electroencephalographs from the optic lobes demonstrated a dominant slow wave of 6–8 cycles per second with an amplitude of 5–10 μv, with a superimposed a wave 14–18 cycles per second. Bipolar recordings show only a slow 5–8 cycle wave. In monopolar cerebellum recordings a slow wave of 6–8 cycles per second with an amplitude of 4–7 μv is seen as the dominant frequency. Most electrical activity appears to be blocked in bipolar recordings. Bilateral asynchrony and asymmetry were observed when monopolar recordings were made from contralateral areas of the brain. Possible causes of asynchrony are discussed.
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