RESUMEN
In many migraine patients prophylactic drugs are effective in reducing attacks and symptoms such as vestibular complaints. Therefore, related neural pathways are probably also affected. This study aimed to compare vestibular evoked myogenic potential in migraine patients under treatment with prophylactic drugs and those without any treatment. Subjects included 46 patients with migraine. They were evaluated in two groups; those under treatment with prophylactic drugs [21 subjects] and those without treatment [25 subjects]. The age range of patients was 20-60 years. The vestibular evoked myogenic potential were recorded with 500 Hz tone bursts at 95 dB nHL. Mean of amplitude ratio [p=0.02], and interpeak latency values in the right ear [p=0.03] and left ear [p=0.001] were higher in patients with prophylactic therapy than the group without therapy; this difference was statistically significant. There was no statistical difference between the two groups in terms of mean of latency of p13 and n23 peaks, and absolute amplitude [p>0.05]. Prophylactic drugs probably improve mean of main response parameters of vestibular evoked myogenic potential in migraine patients with prophylactic therapy
RESUMEN
Patients with migraine commonly show vestibular symptoms. However, abnormal neurotological test findings during the inter-attack intervals, even in the absence of vestibular symptoms, are suggestive of subclinical vestibular dysfunction in migraine. This study aimed to compare the vestibular evoked myogenic potentials between migraine patients and normal individuals. Subjects included 25 patients with migraine and 26 healthy volunteers with an age range of 20-53 years old. The vestibular evoked myogenic potentials were recorded with 500 Hz tone bursts at 95 dB nHL. Mean of absolute amplitude and p13 latency values in the migraine group were significantly less and more than the normal group, respectively [p=0.001 for absolute amplitude in right ant left ears; p=0.004 for p 13 latency in right ears and p=0.02 in left ears]. There was no statistically significant difference between the two groups in mean of the n23 latency and also the amplitude ratio [p>0.05]. According to the prolonged latency of vestibular evoked myogenic potentials response, vestibulospinal tract in brainstem is probably involved in migraine patients. However, due to small sample size, for generalizing this result to all patients with migraine, further researches are needed
RESUMEN
Objective: As the cerebrovascular diseases [CVD] are among the most common anomalies that are directly or indirectly affecting the auditory cortex, studying in this area is important. We tried to evaluate the function of CANS in a group of 50-70 years old cerebrovascular accident [CVA] patients with no hearing complaint by competing sentences test [CST] as a dichotic speech test
Method and Material: This cross-sectional analytical study was conducted at Loghman-e-Hakim hospital between 22, august 1999 and 20, July 2000 in a group of 30 normal 50-70 years old persons and a group of 40 patients with CVA including 30 patients with abnormal CT scan and 10 patients with normal CT scan
Results: The results point out the mean scores of CST in the normal group were at normal range [80-100%] in both ears. And mean scores of CST decreased in the patients groups. There were significant difference between mean scores of CST in the patients with CVA and control groups
Conclusion: CST seems to be a valuable test in the CANS test batteries for the cerebrovascular diseases