Collado-Corona MA, I Mora-Magaña, Cordero-Guzmán LM, Toral-Martiñón R, Shkurovich-Zaslavsky M

Language: Spanish
References: 11
Page: 10-13
PDF size: 88.49 Kb.

ABSTRACT

Transcranial magnetic stimulation (TCMS) is a non-invasive method for assessing motor function in humans. However, there are some reports that suggest internal ear cochlear damage. Fifteen patients with normal auditory function (ages 11 months to 16 years, mean 6.8 years) were tested with brainstem auditory evoked potentials (BSAEP), otoacoustic emissions (OAEs), acoustic reflex (AR), and conventional audiometric tests when possible, before and after (TCMS) transcranial magnetic stimulation for central motor conduction studies in different neurological pathologies. Patients had no auditory protection and no history of seizures. Motor evoked potentials as well as silent periods were recorded from the right abductor pollicis brevis and first dorsal interosseus muscles during rest and weak voluntary contraction when possible. A mean of 18 TCMS between 50 and 75% (1~1.5 Teslas intensity) were given to each patient; BSAEP, OAEs, AR, and audiometric tests were performed before and after TCMS and 2 weeks and 2 months after TCMS. Natural logarithmic transformation of amplitude data resulted in normal distribution. There were no significant differences in auditory function testing. Therefore, TCMS is a safe procedure for auditory function.

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