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August 10, 2020

Finding the brain in the nose

Brann DH and Datta SR (2020)

Finding the brain in the nose

Ann. Rev. Neurosci. 43:277

Olfaction is fundamentally distinct from other sensory modalities. Natural odor stimuli are complex mixtures of volatile chemicals that interact in the nose with a receptor array that, in rodents, is built from more than 1,000 unique receptors. These interactions dictate a peripheral olfactory code, which in the brain is transformed and reformatted as it is broadcast across a set of highly interconnected olfactory regions. Here we discuss the problems of characterizing peripheral population codes for olfactory stimuli, of inferring the specific functions of different higher olfactory areas given their extensive recurrence, and of ultimately understanding how odor representations are linked to perception and action.We argue that, despite the differences between olfaction and other sensory modalities, addressing these specific questions will reveal general principles underlying brain function.

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HISTORY SHOWS AGAIN AND AGAIN HOW NATURE POINTS OUT THE FOLLY OF MEN – “GODZILLA,” BLUE OYSTER CULT

Sandeep Robert Datta, MD, Ph.D Department of Neurobiology Harvard Medical School