Perceptual learning is a type of learning that involves the improvement of sensory perception and discrimination skills through experience and practice. It focuses on the enhancement of abilities such as visual, auditory, tactile, and olfactory discrimination. This type of learning is thought to occur through changes in the brain's processing mechanisms and neural connections. Perceptual learning research aims to understand the mechanisms underlying perceptual skill enhancement and how these skills can be optimized through training and practice. This area of research has applications in fields such as education, rehabilitation, and clinical psychology.