Brief Periods of Auditory Perceptual Training Can Determine the Sensory Targets of Speech Motor Learning

• Published in: Psychological science Vol. 25; no. 7; pp. 1325 - 1336
• Main Authors: Lametti, Daniel R., Krol, Sonia A., Shiller, Douglas M., Ostry, David J.
• Format: Journal Article
• Language: English
• Published: Los Angeles, CA SAGE Publications 01.07.2014; Sage Publications; SAGE PUBLICATIONS, INC
• Subjects: Acoustic Stimulation - education; Activity levels. Psychomotricity; Adolescent; Adult; Adults; Audition; Auditory Perception; Aural learning; Behavioral neuroscience; Biological and medical sciences; Contextual analysis; Educational activities; Female; Fundamental and applied biological sciences. Psychology; Humans; Language; Learning; Learning - physiology; Motor ability; Perception; Perceptual learning; Plasticity; Production and perception of spoken language; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; Psychomotor activities; Sensory perception; Sound; Speech; Speech Acoustics; Speech motor control; Speech Perception; Speech Perception - physiology; Speech Production; Training; Vowels; Young Adult; learning; motor processes; speech perception; cognitive neuroscience; Human; Cognition; Verbal perception; Experimental study; Motor learning; Hearing; Acquisition process; Language; Speech; Motricity
• ISSN: 0956-7976; 1467-9280; 1467-9280
• DOI: 10.1177/0956797614529978

The perception of speech is notably malleable in adults, yet alterations in perception seem to have little impact on speech production. However, we hypothesized that speech perceptual training might immediately influence speech motor learning. To test this, we paired a speech perceptual-training task with a speech motor-learning task. Subjects performed a series of perceptual tests designed to measure and then manipulate the perceptual distinction between the words head and had. Subjects then produced head with the sound of the vowel altered in real time so that they heard themselves through headphones producing a word that sounded more like had. In support of our hypothesis, the amount of motor learning in response to the voice alterations depended on the perceptual boundary acquired through perceptual training. The studies show that plasticity in adults' speech perception can have immediate consequences for speech production in the context of speech learning.