Brain structures supporting sound perception become harder to observe near the cortex

Evidence

There are, for example, places in the ascending neural pathway where neurons from the left and right cochleae are cross-connected. Elsewhere and particularly closer to the centers in the brain, structures are difficult to observe, and there may well be little direct evidence of specific structure to support proposed perceptual strategies. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 564

Categorization

• DEFINE: Establishes the ascending neural pathway terminology as a framework for the chapter.