. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. I960 MA M MALI AX 11IRKRXATIOX 395 "round squirrel nerve as compared to that in the active (summer) animal ( to ) and this change was not shared by any other group (Table III). Amberson (1930) gave a value of for the (,)),, of the absolute refractory period in the sciatic nerve of Rami iscuhiifa. It may lie significant that high tempera-. 20 TEMPERATURE IN °C Fig. 5. Mean curves for excitability versus temperature for various groups of animals used in this study. Animals "active at 5°C" had pr
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. I960 MA M MALI AX 11IRKRXATIOX 395 "round squirrel nerve as compared to that in the active (summer) animal ( to ) and this change was not shared by any other group (Table III). Amberson (1930) gave a value of for the (,)),, of the absolute refractory period in the sciatic nerve of Rami iscuhiifa. It may lie significant that high tempera-. 20 TEMPERATURE IN °C Fig. 5. Mean curves for excitability versus temperature for various groups of animals used in this study. Animals "active at 5°C" had previously hibernated. ture coefficients are also observed in the overall changes of metabolic rate (Kayser, 1940; Hock, 1951). On the other hand, much lower temperature coefficients are found for isolated tissues including brain (South, 1958; Meyer and Morrison. 1960). The linear relationships between temperature and conduction or excitability suggest "physical changes" in the nerve, perhaps. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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