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Biomedical subjects

L Petrosino

Publications and source records attributed to L Petrosino.

At least 19 recordsLinked to original sources

A study of the self-talk of adults who do and do not stutter.

This is a preliminary investigation of the differences in positive and negative self-talk reported by groups of people who do and do not stutter. 10 people who stutter, all who had experience with stuttering therapy, were matched with 10 participants who did not stutter. Each participant, in both groups, was engaged in a session to evaluate speech in a format similar to a professional diagnostic session for stuttering. Each participant was asked to stop at specific times during the session and describe thoughts of that moment as either positive or negative. This procedure is similar to thought sampling and in vivo cognitive assessment used in cognitive-behavioral treatments and research. The participants' reports were taken during a baseline period, during a period in which they were thinking about their speech, and during three different speaking tasks. The reports given by the group of people who stutter were compared to the reports given by the group of individuals who did not stutter. Statistical analyses showed no differences between the thoughts reported by the two groups during the entire session, and no differences between groups during the three separate tasks (baseline, thinking about their speech, and the speaking tasks). Possible explanations and suggestions for research are discussed.

Adult↗

Differential vowel duration associated with children's word-final fricative deletion.

This study assessed whether 3 children, 5 to 6 years old, who deleted word-final fricatives preserve the voicing contrast for those fricatives by producing dif ferential duration of the preceding vowel. The children's CV syllable productions were compared to their CV(C) syllable productions in which the final consonant was intended but actually deleted. Analysis indicated that all 3 children exhibited significantly longer vowel duration, in CV syllables than in CV(C) syllables. This differential duration of the preceding vowel was shown in both isolation and carrier phrase conditions. Of the 3 children 2 preserved the voicing contrast by showing significantly longer vowels preceding voiced consonants as compared to voiceless consonants. One child did this in both isolation and carrier phrase conditions and the other child did this in isolation only. All 3 children manipulated vowel duration to signify the linguis tic contrast, therefore these findings support a linguistic perspective of speech development which focuses on the acquisition and knowledge of the linguistic rules of the language. In addition, the large amount of variability in vowel duration for CV and CV(C) syllables and the marked variability in performance across children support a biological view of a developing vocal tract undergoing structural and physiological changes.

Child↗

Factors related to magnitude estimation scaling of complex auditory stimuli: aging.

The purpose of this study was to examine the effects of aging on magnitude estimation scaling of the loudness of complex auditory stimuli in the form of rock music. The subjects were 10 young adults (M age = 19.3 yr.), and 10 older individuals (M age = 54.2 yr.). The older individuals' mean numerical responses suggested that they perceived the rock music stimuli as louder for all nine suprathreshold intensities tested. The older group of subjects may have perceived the suprathreshold stimulus intensities as being louder because of physical and affective changes that naturally occur in central auditory processing during the aging process.

Acoustic Stimulation↗

Magnitude estimation scaling of annoyance in response to rock music: effects of sex and listeners' preference.

The present study parallels an earlier one Fucci, Petrosino, and Banks in 1994 concerned with sex and listeners' preference effects on magnitude estimation scaling of rock music. The difference between the two studies is that the subjects in 1994 were asked to scale "loudness" while the present subjects were asked to scale "annoyance." The prior results and those of the present study were different, i.e., the women's preference appeared influential in the magnitude estimation scaling of rock music previously but here the men's preference appeared influential. If subjects are instructed to judge the annoyance of an auditory signal, they may respond differently than if asked to judge its loudness. Judgments of annoyance appear to be more context dependent whereas loudness judgments may reflect a perceptual process more closely related to physical aspects of the signal.

Analysis of Variance↗

Magnitude estimation scaling of the loudness of a wide range of auditory stimuli.

The study of the perception of loudness lends itself well to the psychophysical scaling technique of magnitude estimation. This study was designed to extend the range of auditory stimuli used to study the magnitude estimation scaling of loudness. The five stimuli chosen were a 1000-Hz pure tone, narrow band noise (700-1300 Hz band width), broad band noise (100-10,000 Hz band width), rock music, and babble speech, i.e., speech in which meaning is not discernible because several individuals are talking at once. Subjects were 30 normal young women (M = 19 yr.). During the auditory magnitude-estimation task for each of the five stimuli, a subject was instructed to assign numbers to stimulus presented in a randomly ordered series of nine sensation levels (10, 20, 30, 40, 50, 60, 70, 80, and 90 dB SL). Multivariate analysis of variance for repeated measures indicated there were no significant differences in the numerical responses of the subjects for the five stimuli. A possible explanation for these results is the presence of an underlying stabilizing factor (internal scaling mechanism) that allows adults to scale loudness consistently irrespective of the type of auditory stimulus.

Acoustic Stimulation↗

Age-related differences in acoustical aspects of contrastive stress in women.

The purpose of this investigation was to compare the fundamental frequency (F0), durational, and sound pressure characteristics of speech during production of contrastive stress, a suprasegmental component of speech, in young adult and elderly women. Results indicate that, while both groups significantly increased F0, duration, and sound pressure level during production of contrastive stress, elderly women increased F0 to a significantly greater extent than young women and, for all acoustic parameters, the groups were dissimilar in position effects. In spite of the age related differences, such differences did not appear to limit the ability of elderly women to provide linguistic information through prosody. However, they may do so differently from young women. These findings may have implications in terms of treatment of speech disorders in the elderly.

Adult↗

Linguistic aspects of magnitude-estimation scaling of instrumental music, instrumental music with vocal accompaniment, and spoken lyrics.

An analysis of variance of magnitude estimates of loudness of three different types of complex auditory stimuli, instrumental music, instrumental music with vocal accompaniment, and spoken lyrics showed, for 100 young adults, no differences for the types of stimuli. The linguistic aspects of these complex auditory stimuli do not differentially influence loudness judgments.

Adolescent↗

The effect of preference for three different types of music on magnitude estimation-scaling behavior in young adults.

The purpose of the present study was to assess the effect of preference for three different types of music on magnitude estimation scaling behavior in young adults. Three groups of college students, 10 who liked rock music, 10 who liked big band music, and 10 who liked classical music were tested. Subjects were instructed to assign numerical values to a random series of nine suprathreshold intensity levels of 10-sec, samples of rock music, big band music, and classical music. Analysis indicated that subjects who liked rock music scaled that stimulus differently from those subjects who liked big band and classical music. Subjects who liked big band music scaled that stimulus differently from those subjects who liked rock music and classical music. All subjects scaled classical music similarly regardless of their musical preferences. Results are discussed in reference to the literature concerned with personality and preference as well as spectrographic analyses of the three different types of music used in this study.

Adolescent↗

Language familiarity in magnitude-estimation scaling of loudness by young adults.

The purpose was to examine the effect of language familiarity on magnitude-estimation scaling of loudness by young adults. Two groups of subjects participated in this study. Group 1 of 20 subjects (M age = 23.95 yr.) were familiar with English and not familiar with Hindi. Group 2 of 20 subjects (M age = 24.30 yr.) were familiar with English as well as Hindi. Two separate magnitude-estimation scaling tasks were performed. On the first scaling task, an English sentence was used as the stimulus, and on the second scaling task, a Hindi sentence was used as the stimulus. Statistical analysis showed that there was no significant difference between the two groups in loudness judgments of the English and Hindi sentences. Subjects scaled the loudness of an unfamiliar language in the same manner as they scaled the loudness of a familiar language. The findings suggest that magnitude-estimation scaling is an effective measure of loudness whether the language being listened to is familiar to the listener.

Adult↗

Oral vibrotactile assessment procedures: modifications.

An ongoing process to develop oral vibrotactile instrumentation that can be standardized and used in practical assessment of the oral tactile sensory system was reported in The International Journal of Orofacial Myology in March, 1990, by Fucci, Petrosino, and Harris. The material presented in the present article reflects the current research and future direction that the development of this instrumentation is taking. Potential benefits of this instrumentation for individuals working in the area of orofacial myofunctional disorders are suggested.

Equipment Design↗

Effects of gender and listeners' preference on magnitude-estimation scaling of rock music.

The purpose of the present study was to examine the effects of gender and listener preference on magnitude-estimation scaling of rock music. Four groups of young adults were tested: 14 women who liked rock music, 14 women who disliked rock music, 14 men who liked rock music, and 14 men who disliked rock music. Subjects were instructed to assign numerical values to a random series of nine suprathreshold intensity levels of a 10-sec. sample of rock music. Analysis indicated that there was no difference in scaling performance between women and men. There was a difference in scaling performance between the group of women who liked rock music and the group of women who disliked rock music. There was no difference in the way the two groups of men performed the scaling task. These results suggest that men and women perform magnitude-estimation scaling of rock music similarly. Women, however, allow preference to influence how they choose numbers during magnitude-estimation scaling tasks whereas men do not.

Adolescent↗

Effect of personality on magnitude-estimation scaling of complex auditory stimuli.

The purpose of the present study was to examine the effect of the personality trait of extraversion/introversion on magnitude-estimation scaling of complex auditory stimuli. Two groups of subjects, 10 who liked rock music (M age = 22.4 yr.) and 10 who disliked rock music (M age = 21.9 yr.), were tested. Subjects were instructed to assign numerical values to a random series of nine suprathreshold intensity levels of a 10-sec. sample of rock music. Each subject was given the Eysenck Personality Inventory, a test designed to measure the personality trait of extraversion/introversion. Statistical analyses indicated that the personality trait of extraversion/introversion did not appear to have an effect on the way the subjects scaled the rock-music stimulus.

Adolescent↗

Lingual vibrotactile magnitude-estimation scaling using a limited set of suprathreshold stimulus intensities.

The purpose of the present study was to assess feasibility of lingual vibrotactile suprathreshold testing with a limited number of intensities. 25 subjects ranging in age from 18 to 26 years (M = 19 yr.) participated. Two magnitude-estimation scaling tasks were presented to each subject with 1 wk. between tasks. One magnitude-estimation task involved eight suprathreshold intensities and the other involved four. Statistical analyses showed that there was no difference in subjects' responses to the two scaling efforts. In pure research endeavors it might make sense to continue to obtain as many magnitude-scaling data points as possible, but practical prudence may dictate a limited set of suprathreshold intensities for efficiency and subjects' comfort.

Adolescent↗

[Metabolic aspects of intestinal urinary diversion. Comparison with ileo-cecal bladder substitution and ileal conduct].

The aim of this study was the metabolic evaluation of 10 patients with 2 different types of urinary diversions, after cystectomy for infiltrating carcinoma. The patients were divided into two groups, homogeneous for age and follow up, according to the type of urinary diversion: group A (5 patients with ileo-cecal bladder) and group B (5 patients with ileal conduit). The follow up duration was 16.8 +/- 7.3 months in group A and 25.4 +/- 7.8 months, in group B. Even though the glomerular filtration rate (GFR) in both groups was within the normal limits, however - on closer evaluation - patients of A group revealed a slight functional damage, shown by reduced creatinine secretion, lower bicarbonatemia and lower urinary acid secretion when compared with ileal conduit patients. According to this study, the ileal conduit seems to be associated with a fairly good metabolic status while the ileo-cecal bladder could require closer clinical-metabolic follow up and bicarbonate supplementation.

Acidosis↗

Voice onset time of velar stop productions in aged speakers.

Voice onset time (VOT) was measured for voiced and voiceless velar stop consonants across three vowel contexts (/i, a, u/) in healthy young adult and older subjects. Analysis showed that mean VOT values for both /k/ and /g/ across the three vowel contexts did not differ between the two groups; however, differences in VOT variability (standard deviation) approached significance; the older subjects exhibited increased variability. This apparent increase in variability may be related to the subtle anatomical and physiological changes with age.

Age Factors↗

Differences in lingual vibrotactile thresholds of sensitivity using adjusted vs fixed methods of vibrator probe-contactor alignment.

The purpose of this study was to compare lingual vibrotactile thresholds of sensitivity obtained using individual subject adjustments of vibrator probe-contractor to lingual surface, with thresholds obtained using a fixed vibrator probe-contactor position across 30 subjects ranging in age from 18 to 26 yr. (M age = 20 yr.). Analysis showed minor (less than 5 dB SPL) differences in lingual vibrotactile thresholds of sensitivity between the two methods of vibrator probe-contactor alignment. For research purposes, the vibrator probe-contactor assembly should be adjusted to each individual's lingual surface, but for clinical-behavioral purposes, it might be sensible to use a fixed vibrator probe-contactor position across subjects, especially when performing research on young children, older adults, and the communicatively handicapped.

Adolescent↗

The effect of preference for rock music on magnitude-estimation scaling behavior in young adults.

The purpose of the present study was to examine the effect of preference for rock music on magnitude-estimation scaling behavior in young adults. Two groups of young adults, 20 who liked rock music and 20 who did not like rock music, were tested. Subjects were instructed to assign numerical values to a random series of nine suprathreshold intensity levels of a 10-second sample of rock music. Analysis indicated that there was a difference in performance by the two groups of subjects on the magnitude-estimation scaling task. The subjects who liked rock music provided significantly lower mean numerical responses than the subjects who did not like rock music for all nine suprathreshold intensities.

Adolescent↗