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Animals at the extremes: hibernation and torpor
Animals at the extremes: hibernation and torpor

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Neural adaptations found in hibernation and arousal. Photomicrographs representing the pattern of distribution of fos-immunopositive neurons in mediobasal hypothalamus of jerboas hibernating for (a) 2 days, (b) 10 days, and (c) after arousal from hibernation.
Quezzani, S. E. et al. (1999) Neuronal activity in the mediobasal hypothalamus of hibernating jerboas, Neuroscience Letters, 260. Elsevier Science
Figure 40 Neural adaptations found in hibernation and arousal. Photomicrographs representing the pattern of distribution of fos-immunopositive neurons in mediobasal hypothalamus of jerboas hibernating for (a) 2 days, (b) 10 days, and (c) after arousal from hibernation. Abbreviations: ARC, arcuate nucleus; 3V, third ventricle; ME, Median eminence; VMH, ventromedial hypothalamus

 6.4 Rapid-response genes and rhythmic neuronal activity