The purpose of this study was to provide, through systematic investigation, empirical data to support or reject the assumption that auditory stimulation by discrete pitches evokes consistent muscle responses in the extrinsic laryngeal muscles. The study was an electromyographic investigation of specific upper and lower extrinsic laryngeal muscles as stimulated by two specific pitch stimuli. The responses were evoked by auditory stimulation, without vocalization. From these findings, it was concluded that a direct relationship exists between specific pitch stimuli and specific extrinsic laryngeal muscle responses. It was concluded that these responses likely exist in the general population.

The present study sought to confirm melodic expectancy patterns discovered in a previous investigation and to determine whether data would be affected by altering the rhythmic condition of the stimuli. The three problems of this investigation were to study expectancies generated by two-note stimulus intervals of equal duration; the expectancies generated by stimulus intervals presented with a long-short rhythm; and the expectancies generated by stimulus intervals presented with a short-long rhythm. Fifty subjects were asked to sing what they believed would be the natural continuation of the melody begun by a two-note stimulus interval. The stimulus intervals were grouped in rhythmic sets, one set of neutral-rhythm stimuli, one set of long-short stimuli, and one set of short-long stimuli. The interval from the second note of the stimulus interval to the first sung note was transcribed as the generated expectancy response interval. The data were examined in two basic ways, using response data as a whole and examining data for each stimulus interval separately. A third method of data evaluation concerned harmonic triads occurring in the response data. Both when considering response frequency as a whole, and when considering response data separately for each melodic beginning, no significant difference associated with …