Flavor is created in the brain
Shepherd argues flavor is not a property of food but a construction of the brain. It is assembled chiefly from retronasal smell fused with taste and other sensory inputs.
Neurogastronomy: How the Brain Creates Flavor and Why It Matters
6 ideas
Retronasal olfaction
Aromas released in the mouth travel back up to the nose during eating and chewing. This retronasal smell, not the tongue, is the dominant contributor to perceived flavor.
A human brain flavor system
He proposes flavor as a distributed brain system spanning smell, taste, memory, emotion, and reward. Framing it as a system argues flavor deserves study as its own field.
Smell forms images like vision
Odor molecules produce spatial patterns of activity in the olfactory bulb, analogous to visual images. The brain learns to recognize these odor images much as it recognizes sights.
Flavor and the obesity problem
Because flavor drives reward and craving, its neuroscience bears directly on eating behavior. Understanding how flavor motivates intake connects the lab to public health.
Flavor is culturally learned
Flavor perception is shaped by experience and culture, so preferences are learned brain patterns. Liking is trained over time rather than fixed by chemistry alone.