O lugar de enunciação de dois bebês com sofrimento psíquico e atraso de linguagem / El lugar de enunciación de dos bebés con sufrimiento psicológicoy retrasodel lenguaje / The place of enunciation of two babies with psychologicaldistress and language delay / Le lieu d'énonciation de deux bébés souffrant de détresse psychologique et deretard du langage

Este artigo analisa a singularidade linguística e psíquica de dois bebês, com desfecho de linguagem distintos, aos dois anos. Para análise, utilizaram-se a entrevista inicial e continuada, os Indicadores Clínicos de Referência/Risco ao Desenvolvimento Infantil (IRDI), os Sinais Enunciativos de Aquisição da Linguagem (SEAL), além de filmagens da interação entre mãe e bebê. Os resultados indicaram que em apenas um dos casos houve superação do sofrimento psíquico e atraso na linguagem a partir do segundo ano de vida. Tanto o exercício das funções parentais quanto às condições dos bebês são fatores importantes em sua constituição psíquica e linguística, o que traz reflexões interdisciplinares importantes acerca da singularidade na relação entre esses dois aspectos do desenvolvimento infantil

Este artículo analiza la unicidad lingüística y psíquica de dos bebés con un resultado distinto del lenguaje a los dos años. Para el análisis se utilizó la entrevista inicial y continuada, los Indicadores Clínicos de Referencia/Riesgo para el Desarrollo Infantil (IRDI), los Signos Enunciativos de Adquisición del Lenguaje (SEAL), así como imágenes de la interacción entre madre y bebé. Los resultados indicaron que solo uno de los casos había superado la angustia psicológica y el retraso del lenguaje a partir del segundo año de vida. Tanto el ejercicio de las funciones parentales como las condiciones de los bebés son factores importantes en su constitución psíquica y lingüística, lo que trae importantes reflexiones interdisciplinarias sobre la singularidad de la relación entre estos dos aspectos del desarrollo infantil.

This article seeks to investigate the linguistic and psychic uniqueness of two babies with distinct language outcome at two years. For analysis, the initial and continued interview, the Clinical Indicators of Reference/Risk to Child Development (IRCD), the Enunciative Signs of Language Acquisition (SEAL) were used, as well as footage of the interaction between mother and baby. The results indicated that only one of the cases had overcome psychological distress and language delay from the second year of life. Both the exercise of parental functions and the conditions of babies are important factors in their psychic and linguistic constitution, which brings important interdisciplinary reflections on the uniqueness in the relationship between these two aspects of child development

Cet article cherche à enquêter sur l'unicité linguistique et psychique de deux bébés, en considérant les axes structurels de la constitution du psychisme et la participation de la mère et du bébé dans les protoconversations initiales. Pour l'analyse, l'entretien initial et continu, les indicateurs cliniques de référence/risque pour le développement de l'enfant (IRDE), les signes énonciatifs de l'acquisition du langage (SEAL) ont été utilisés, ainsi que des images de l'interaction entre la mère et le bébé. Les résultats ont indiqué qu'un seuldes cas avait surmonté une détresse psychologique et un retard de langage dès la deuxième année de vie. Tant l'exercice des fonctions parentales que les conditions des bébés sont des facteurs importants dans leur constitution psychique et linguistique, cequi amène d'importantes réflexions interdisciplinaires sur le caractère unique de la relation entre ces deux aspects du développement de l'enfant

Análisis del llanto en niños hipoacúsicos y normoyentes de 0 a 2 años de edad

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Abstract: Infant crying is a complex phenomenon that implies several functions: breathing, action of laryngeal and supralaryngeal muscles under the control of the neurovegetative systems of the brainstem, and the limbic system, and the association of cortical areas and the cerebellum. Although it is a communication system different to babbling and language, it is related with the future development of phonation. Cry analysis provides information about the neuro-physiologic and psychological states of newborns and the identification of perinatal abnormalities. It is necessary to discuss the subject extensively because there are new data on situations such as laringomalacia, congenital hypothyroidism, deafness and sleep apnea that seem to be associated to infantile crying behaviors. Infant cries can be analyzed as behavioral conditions (hunger, anger and pain cries) allows knowing of mother-child relationship or the effect under diverse cultural conditions, such as stress, emo-tional deprivation or illness. A spectrographic analysis of the cries may identify several characteristics: threshold, latency, duration of phonation, maximum and minimum of the fundamental frequency (F0), occurrence and maximum pitch of shift, gliding, melody, biphonation, bifurcation, noise concentration, quality of the voice, double harmonic break, glottal plosives, vibratos, melody types, F0 stability and inspiratory stridor. To date, it has not been possible to establish alteration patterns. The best studied variables are F0, its harmonics and the duration of each emission; it is accepted that F0 varies between 400 and 600 Hz, during 1.4 ± 0.6s. Under such approaches, diverse alterations and risk factors have been studied: congenital alterations, malnutrition, sudden death, maternal exposition to drugs, prematurely born babies or perinatal asphyxia and disturbances of the central nervous system. Authors have reported F0 equal or less than 300 Hz in cases of sudden death or with high frequencies, near the 1000 Hz in the Cri du chat syndrome, perinatal asphyxia and other cases who died suddenly. During the cry, there is an increase of intra-abdominal pressure, heart rate and blood pressure, reduction of oxygen saturation, increase of the intra cranial-pressure, beginning of stress reactions, depletion of the energy anf oxygen reserves, such as the found in the Valsalva's maneuver. Every event of prolonged cries implies alteration of the breathing control like a Hering-Breuer reflex. Considering that some authors have proposed early vocalizations are a good predictor of deafness, in a previous paper we reported the characteristics of the cry of 20 deaf neonates. However, we were not able to demonstrate differences when comparing them with normal hearing neonates and infants, using only parametric methods. Still, we decided to go further and investgate the quality of infant cries of deaf neonates and infants. Material and methods. Twenty zero-to two-year old cases were studied; they were deaf children of both sexes; all cases were included in a follow-up program on the Human Communication Department of the National Institute of Perinatology of Mexico and were compared with 20 normal hearing children. We re-corded Brain Stem Evoked Auditory Responses (BEAR) and cry recording using a digital Sony recorder during the physical exploration. We analyzed the frequency (Hz) and duration of the espiratory cries, the duration of inspiration between two cry emissions and the characteristics of the spectrogram. Quantitative analysis. The usual estimates of means and standard variation were obtained and they were compared with one way analysis of variance. We organized typologies of frequency by means of cluster techniques (Ward method). The distribution of the duration of the periods of crying and silence was explored with a contingency tables. Qualitative analysis. Two standardized observers visually analyzed all the cries to determine any variation of F0 and of harmonic frequencies. Whenever a variation of F0 was observed, we obtained maximum and minimum frequencies, as well as average duration of each cry emission. The procedure was validated by means of the graphic comparison with a Fouries analysis. Results. Mean duration of cries in the deaf group was 0.5845 ± 0.6150 s (range 0.08-5.2 s), while in the group of normal hearing cases was 0.5387 ± 0.2631 (range 0.06-1.75 s). From the deaf group, five cases had very prolonged duration of cries, without statistical significance. The mean duration of the inspiration was 0.3962 ± 0.2326, with a range of 0.06 to 1.75 in the deaf group and of 0.4083 ± 0.1854, with a range of 0.21 at 0.96, in the controls, without difference among groups. There was no correlation between the time of espiratory cry and that of the inspiration. Three cry topologies were organized: one of shorter duration (mean 0.30 s), with 111 spectrograms, an intermediate one (mean 0.73) with 85 spectrograms and one of prolonged duration (mean 4.5 s) with spectrograms of three cases. Three topologies of the inspiratory period were obtained: one of short periods (mean 0.33 s), with 171 spectrograms, one of intermediate duration (mean 0.80 s) with 18 spectrograms and one of prolonged duration (mean 1.60 s) with three cases. There were no statistical differences of tipologies between the deaf groups and normal hearing cases. On the qualitative analysis of cries, we came across several variations which are interpreted as abnormalities: vibratos, poor melodic control, loss of fundamental frequencies, harmonic limited production, plosives, gliding, bi phonation, and a loss of intensity at end of cry emissions. These changes were also observed on the control cases, but only in a very limited number. Discussion. Cry spectrogram analysis are non invasive indicators of the neonate's neurophysiologic organization. Although cry duration varies in healthy newborns, the accepted variation for a normal range is 1.1 to 2.8 s, with standard deviations around 0.6 s. Consistent differences have not been demonstrated between risk and control groups. However, abnormal cases such as Down syndrome or severe asphyxia have very short cries, whereas on the Cri du chat syndrome the duration of cries is prolonged. Extended cries imply cardiac and respiratory risks which have been associated with later outcomes as development retardation and sudden death. There are also some questions to solve, such as the regulation and control of cry, starting from breathing mechanisms or from a sensorial afferent, mediated by hearing. The deaf infants are constituted in a study model, considering that the auditory afference is suppressed and the control of the cry is restricted to the breathing environment. In the studied spectrograms, the duration of the cry was within reported normal limits by other authors, inasmuch in the normal hearing control cases as in the deaf, except the dissident cases, but without these reaching statistical significance. Further research of brainstem function is needed for the abnormal cases with prolonged cry periods, since such cries are interpreted as an alteration of the breathing reflexes of Hering-Breuer, which might have a pathological meaning in the sense of the sob's spasm or even more severe risk factors as sleep apnea and even sudden death. The qualitative analysis in the deaf individuals demonstrated a poor quality and unstable character of melodic control, with a smaller number of harmonics. The deaf cases lost the relationship between the fundamental frequencies and their harmonics, mainly because of the participation of supraglottic structures that modulate pitch and due to the poorness of melodic control, either for monotony or due to the impossibility of returning to a normal pattern, following variations such as vibrato, plosives or noise concentration. In the cases of prolonged cries, starting from the third second, the sound intensity tends to diminish and the harmonics are lost, perhaps due to a decrease of the subglottal pressure of phonation. This finding supports the auditory control of crying related to breathing mechanisms. Conclusions. In preliminary terms, by means of the melodic analysis of the spectrograms, differences are demonstrated be-tween the cries of the deaf and of the normal hearing cases. The increase of the complexity of the melody of the cry, or their poverty, are indicative of the neuromuscular function and they may support the evaluation of phonation before language development. The study of the spectrograms of deaf individuals does not constitute an element for the detection or for diagnosis since, to date, estimators of sensibility or of specificity have not been established, but they constitute a support for its integral evaluation, with the possibility of evaluating and of improving therapeutic rehabilitation.