Visual Evoked Potentials and Brainstem Auditory Evoked Potentials in Migraine and Transient Ischemic Attacks

Abstract

A study of brainstem auditory evoked potentials (BAEPs) and pattern reversal visual evoked potentials (VEPs), recorded in intercritical phase, was carried out in 20 subjects (10 suffering from common migraine and 10 suffering from vertebrobasilar TIA) in order to obtain a comparative evaluation of cortical-subcortical functions. The data we obtained demonstrate the presence of BAEPs alterations in patients with previous vertebrobasilar TIA: no abnormalities were found in the migraine group. VEPs parameters are normal in both groups. Our data show that the study of the so-called "stimulus-related" potentials, such as BAEPs and pattern reversal VEPs, is useful in evaluating the damage produced by any noxa, while it cannot clearly emphasize individual factors predisposing to a specific pathology, as the absence of specific alterations in migraine patients demonstrates.

Lack of visual evoked potential habituation in the syndrome of HaNDL

“…This is consistent with other studies on migraineurs [4,14] and in line with the notion that temporal processing parameters are not altered in migraine [1]. Besides the lack of VEP-habituation our patient showed higher pre-habituation P100-amplitudes during the acute period compared with the follow-up phase.…”

Visual and Brainstem Auditory Evoked Potentials in Neurology

“…The obtained data demonstrate a delay of peak III of the BAEPs in patients with previous vertebrobasilar TIA. These data show that the study of the BAEPs is useful in evaluating the damage produced by anoxia (Benna et al, 1985). Schwarz et al, 1996 showed prolonged interpeak latencies (I-III, I-V, III-V, IV-V) and delayed absolute latencies of waves II, III, V, and I, at least on one side, in the BAEP.…”

Auditory brainstem response in pediatric migraine: During the attack and asymptomatic period

“…While some authors observed no abnormalities in brainstem responses [23,25,28], others have described some alterations of brainstem functions in migrainours [7,26,27,[29][30][31]. In this study, we aimed to document if any hearing changes were present in children suffering from migraine during or/and between migraine attacks.…”

“…Auditory hallucinations, tinnitus, fluctuating hearing loss, phonophobia and sudden deafness are previously reported auditory symptoms [1,5,6,[18][19][20][21][22]. Because of ABR latency variables seem to be a sensitive measures of auditory dysfunction, hearing parameters in migraine has been studied with ABR in the relevant literature [7,13,[23][24][25][26][27][28][29][30][31]. In Table 6, we summarized findings of the studies which evaluate the auditory alterations of migrainours with ABR.…”

“…In Table 6, we summarized findings of the studies which evaluate the auditory alterations of migrainours with ABR. Majority of these studies performed during asymptomatic period in adult patients [7,23,26,31]. In experimental studies [24,25], attack has been induced by drugs which influenced the plasma serotonin level.…”