Category-specific integration of homeostatic signals in caudal but not rostral human insula
W Kyle Simmons, Kristina M Rapuano, Seth J Kallman, John E Ingeholm, Bernard Miller, Stephen J Gotts, Jason A Avery, Kevin D Hall, Alex Martin, W Kyle Simmons, Kristina M Rapuano, Seth J Kallman, John E Ingeholm, Bernard Miller, Stephen J Gotts, Jason A Avery, Kevin D Hall, Alex Martin
Abstract
Prevailing theories hold that the insula is functionally organized along its caudal-to-rostral axis, with posterior regions coding lower-level sensory information and anterior regions coding higher-level stimulus significance relative to the body's homeostatic needs. Contrary to predictions of this model, the response of the taste-sensitive region of the caudal, but not rostral, insula to food images was directly related to the body's homeostatic state as indexed by levels of peripheral glucose.
Trial registration: ClinicalTrials.gov NCT00846040.
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Source: PubMed