Ocular and cervical vestibular evoked myogenic potential simultaneous in normal individuals

Effectiveness of Computerized Auditory Training on Speech Perception in Children With Hearing Loss: A Systematic Review

PURPOSE

The purpose of this study was to investigate the effectiveness of using computerized auditory training in the auditory perception of speech in children who use electronic devices through a systematic review of the literature.

METHOD

This is a systematic review based on the elaboration of the following guiding question: In hearing-impaired children who use electronic devices, how effective is the use of computerized auditory training in the auditory perception of speech? The Cochrane Library, Embase, LILACS, PubMed, Web of Science, and Scopus databases and gray literature (Google Scholar and ProQuest) were consulted.

RESULTS

Nine hundred and eighteen records were identified, with additional two studies in the citation search, totaling 920 studies. After excluding the 184 duplicate references, using the Rayyan platform, the titles and abstracts were screened (n = 736), with 20 studies selected and considered for full reading. Six of the 20 studies were included in the systematic review of the literature.

CONCLUSIONS

Positive and beneficial results regarding computerized auditory training are evidenced, which describe and discuss the proof of the effectiveness of the positive effects on the auditory perception of speech in children using hearing aids and cochlear implants with regard to auditory detection skills, discrimination, recognition, and auditory memory. The positive results are inspiring for the continuity and expansion of studies that further investigate the use of computerized auditory training with contemporary technologies and have an impact on the improvement of access to specialized intervention.

Vestibular Evoked Myogenic Potential on Ocular, Cervical, and Soleus Muscles to Assess the Extent of Neurological Impairment in HTLV-1 Infection

Introduction: Vestibular Evoked Myogenic Potential (VEMP) can be used to test central vestibular pathways from the midbrain to the lumbar spine, according to the muscle tested.

Purpose: to compare the spinal cord alteration in individuals with HTLV-1-associated myelopathy (HAM) and with HTLV-1-asymptomatic infection using the VEMP recorded from different muscles.

Methods: VEMP was recorded in 90 individuals of whom 30 had HAM, 30 were HTLV-1 asymptomatic carriers, and 30 negative controls. VEMP was recorded in the oculomotor muscle (oVEMP), testing the vestibulo-ocular reflex, and in the cervical muscle (cVEMP) and soleus muscle (sVEMP), testing the vestibulospinal reflex, respectively, in the cervical and in the lumbar spinal level. The type of stimulation was auditory for oVEMP and cVEMP, and galvanic for sVEMP. The compared variables were the latencies of the electrophysiological waves.

Results: HTLV-1-asymptomatic group was similar to the controls regarding oVEMP (p = 0.461), but different regarding cVEMP (p < 0.001) and sVEMP (p < 0.001). HAM group has presented the worst latencies and was different from the HTLV-1-asymptomatic group in the VEMP of all the tested muscles (p < 0.001). The concomitant occurrence of VEMP alterations in the three recorded muscles of the same individual was found in 2 (6.7%) asymptomatic carriers and in 20 (66.7%) patients with HAM (p = 0.001). The analysis of VEMP alteration per group and per muscle has showed that, in HTLV-1-asymptomatic group, oVEMP was altered in 3 (10.0%) individuals, cVEMP in 10 (33.3%) and sVEMP in 13 (43.3%). In HAM group, oVEMP was altered in 23 (76.6%) individuals, cVEMP in 27 (90%), and sVEMP in 30 (100%).

Conclusion: HTLV-1-neurological damage has followed an ascendant progression beginning at the lumbar spine in the stage of a clinically asymptomatic infection, whereas HAM has affected not only the spine, but also the midbrain.