What Causes a Stream to Meander

question 23

Essay

What causes a stream to meander?

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Definitions:

Receptor Cells

Specialized cells that convert external stimuli into electrical signals for the nervous system to process.

Opponent-process Theory

Opponent-process theory is a psychological and neurological model that describes how the perception of one stimulus (color, emotion, pain) is dependent on the opposite function of its pair.

Ewald Hering

A 19th-century German physiologist who proposed the opponent-process theory of color vision.

Young-Helmholtz Theory

A theory of color vision that proposes the eye detects colors through the relative rates of response by three kinds of cones, each one sensitive to different wavelengths of light.