جستجوی مقالات مرتبط با کلیدواژه "brain maturity" در نشریات گروه "پزشکی"

Stuttering is a multifactorial disorder. So far, numerous findings have been reported regarding various deficits in auditory processing components in the people who stutter. Despite studies on correlation of auditory processing deficits and stuttering, this assumption has not been proven yet. The purpose of the present study was to investigate and collect the results of studies regarding the auditory processing deficits in the people who stutter.

This study was a narrative review to collect research on auditory processing deficits in people who stutter. ISI, PubMed, Scopus, Science Direct, and PsycINFO databases were searched to reterive English articles that were published from 1995 to 2020. For studies conducted in Iran in Persian, SID and Magiran databases were searched. “Stuttering”, “auditory feedback processing”, “neurophysiology”, and “brain maturity” were the keywords of interest.

In the first stage, 211 articles were found. Finally, after reviewing the inclusion criteria, 86 articles in English and Persian were included. In addition to reviewing articles concerning the existence of auditory processing deficits, the present study emphasized that auditory processing problems in the people who stutter altered the assessment, diagnosis, and treatment approaches.

Although there is no evidence of anatomical abnormalities in the auditory system of people who stutter, numerous studies have reported unstable evidence of central impairments in their auditory processing. Neuroimaging and electrophysiological studies showed involvement of the central and peripheral areas of auditory processing.</div>

Several studies have shown various deficits in linguistic، auditory، and speech-motor processing of people who stutter. The Diversity of pathological findings makes it hard to suggest a comprehensive hypothesis to explain the nature of stuttering. However it seems possible to integrate heterogeneous findings in terms of maturity hypothesis which has been recently proposed on the basis of an electro-encephalographic study. This narrative review article was an attempt to integrate diverse findings on stuttering into the frame of brain maturity hypothesis. Literature review was performed using “neurophysiology of stuttering” and “brain maturity hypothesis” as keywords in PubMed، Science Direct، Proquest databases، and Google Scholar search engines and also among library sources from 1990 to 2012. Thirty-two papers and 4 books were selected according to subject relevance and their respective citation numbers. Records on neurogenic or psychogenic stuttering were excluded so that only those papers on developmental stuttering with a citation number of at least 10 (for papers published from 1990 to 1999) or 2 (for those published from 2010 to 2012) were selected. Three papers were obtained in abstract form. Results the present article focused on the pattern of spontaneous recovery as an evidence for maturity hypothesis. To be more specific، spontaneous recovery was considered as an index of slow neural maturity، which in return، results in linguistic، auditory and motor ability deficits in stuttering. Diversity of deficits in stuttering may imply slow neural maturity of linguistic-motor system. It seems that، this slowness causes disturbances in the laterality of linguistic-motor processes in people who stutter. More research about hypothesis is possible via using techniques which can facilitate neural maturity generally or specificly.