Since the mid-1980s, there has been a new wave of interest in perceptual learning due to findings of cortical plasticity at the lowest sensory levels of sensory systems.
32.
The perceptual expertise theory also suggest that if we identify the perceptual learning mechanisms that control perceptual expertise with face and non-face stimuli we will understand the cross-race effect.
33.
In complex perceptual learning tasks ( e . g ., sorting of newborn chicks by gender, playing chess ), experts are often unable to explain what stimulus relationships they are using in classification.
34.
Involved in research on the effects of the dehumanization of traditional medical education, Naranjo traveled briefly to the United States during a mission assigned by the University of Chile to explore the field of perceptual learning.
35.
The work focused on basic sensory discrimination, however, suggests that the effects of perceptual learning are specific to changes in low-levels of the sensory nervous system ( i . e ., primary sensory cortices ).
36.
Notably, Nusbaum has examined the role of sleep in consolidating perceptual learning of speech sounds, the cortical mechanisms that mediate perception of audio-visual speech, the role of gesture in production and comprehension of speech, and how listeners adjust to differences among talkers.
37.
Other examples of perceptual learning in the natural world include the ability to distinguish between relative pitches in music, identify tumors in x-rays, sort day-old chicks by gender, taste the subtle differences between beers or wines, identify faces as belonging to different races, detect the features that distinguish familiar faces, discriminate between two bird species ( " great blue crown heron " and " chipping sparrow " ), and attend selectively to the hue, saturation and brightness values that comprise a color definition.
