That pink candy is cheating. Under bright, focused light, its surface hits your visual cortex with a stronger signal than an identical treat in a dim blur. High luminance contrast and sharp spatial frequency edges drive more spikes in early visual areas, which then feed forward into attention networks and reward circuitry.
Taste, by comparison, is late to the party. Before gustatory receptors transmit anything meaningful, the ventral visual stream has already tagged the glossy, saturated pink as both salient and likely high in sugar, based on prior conditioning and learned associations. Functional MRI studies show that orbitofrontal cortex and ventral striatum respond more intensely to vividly lit, high-contrast food images than to the same foods shown in flat, muted light.
So hunger here is partially a visual construct. Color saturation, specular highlights, and depth-of-field tricks recruit predictive coding circuits, pushing the brain to anticipate sweetness and energy long before the first bite. The dull snack is not less tasty; it is just outgunned in the attention market by a brighter, sharper competitor that wins the neural auction for your next craving.
