The Biology of Taste Perception & Sugar Craving | Dr. Charles Zuker

About this video

Dr. Charles Zuker, a professor at Columbia University, joins Huberman to discuss perception, especially taste. Huberman explains that Dr. Zuker’s laboratory discovered many taste receptors for sweetness, sourness, bitterness, saltiness and umami, and a separate set of sugar-sensing neurons in the body whose signalling to the brain sits below conscious awareness and drives sugar seeking. The conversation also covers thirst, and how flavour differs from taste because flavour involves smell, texture and temperature. Dr. Zuker describes conditioned taste aversion as one-trial learning, in which pairing an attractive taste with malaise can make an animal vehemently dislike it, and he uses that phenomenon to explore how the brain changes the meaning of a stimulus according to its state. Huberman closes by connecting these mechanisms to how internal representations of the whole world are built.

Key takeaways

• Dr. Zuker describes taste receptors for sweet, sour, bitter, salty and umami identified by his laboratory.
• Huberman explains Dr. Zuker’s finding of body sugar-sensing neurons that signal below conscious awareness.
• Dr. Zuker distinguishes flavour from taste, since flavour also involves smell, texture and temperature.
• Dr. Zuker describes conditioned taste aversion as powerful one-trial learning.
• Dr. Zuker argues the brain changes the meaning of a stimulus as a function of its state.

Episode details: published July 18, 2022 · 217.8K views · 2:17:38 long. Summary written by Self Growth Videos from the episode itself. The science and protocols described are Andrew Huberman’s, presented for education — not medical advice. Consult a qualified professional before changing your own health practices.

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