Menstrual cycle influences on voice and speech in adolescent females.

The objective of this study is to characterize voice intensity and stability of fundamental frequency, formants and diadochokinesis, vocal modulations, rhythms, and speed of speech in adolescents during follicular and luteal phases of the menstrual cycle. Twenty-three adolescent females who were nonusers of oral contraceptives participated in a cross-sectional study of menstrual cycle influences on voicing and speaking tasks. Acoustic analyses were performed during both phases of the menstrual cycle using the Kay Elemetrics Computer Speech Lab Software Package. Data were analyzed using Student's paired sample t test. Phono-articulatory parameters were similar in both phases of the menstrual cycle (fundamental frequency: 192.6+/-23.9 Hz; minimum formant 891.7+/-110.3 Hz; and maximum formant: 2471.5+/-203.6 Hz). In diadochokinesis, they had a speed of 5.6+/-0.6 seg/s and vocal intensity was 61.5+/-2.6 dB. The mean values for the variations in voice modulations were as follows: anger (21.7+/-8.7 Hz)

Aspectos anatomofisiológicos da fonação / Anatomophysiological aspects of speaking

Este trabalho visa apresentar uma revisão de literatura, tendo como tema central a fonação, onde serão abordados conceitos básicos a ela relacionados, anatomia da laringe, fono-articulação, teorias sobre a formação da voz e os principais exames por imagens que possibilitam a visualização das estruturas do órgão fonador. Estes aspectos são discutidos levando-se em consideração que a formação representa um papel importante nas relações humanas, facilitando a integração do indivíduo em seu meio