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DIURNAL VARIATION OF EXCITABILITY
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relation between the hours of the day and the excitability as gauged by the amplitude of response (Fig. 28). It will
Fig. 28. The continuous curve shows the relation between the hour of the day and temperature. The dotted curve exhibits relation between the hour of the day and excitability.
be seen that there is, broadly speaking, a marked resemblance between the two curves, which demonstrate the
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