Critical flicker frequency in migraine. A controlled study in patients without prophylactic therapy

被引：20

作者：

Kowacs, PA ^{[1
]}

Piovesan, EJ ^{[1
]}

Werneck, LC ^{[1
]}

Fameli, H ^{[1
]}

Zani, AC ^{[1
]}

da Silva, HP ^{[1
]}

机构：

[1] Univ Fed Parana, Hosp Clin, Dept Internal Med, Neurol Div,Headache Unit, BR-80060900 Curitiba, Parana, Brazil

来源：

CEPHALALGIA | 2005年 / 25卷 / 05期

关键词：

critical flicker frequency; flicker frequency threshold; migraine; migraine mechanisms; visual system;

D O I：

10.1111/j.1468-2982.2004.00861.x

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

The critical flicker frequencies (CFF) of individuals with migraine with and without aura were determined and compared to those of normal controls. Twenty-six migraine patients, 12 with aura and 14 without aura and 30 healthy controls were included. Migraineurs were tested during a migraine-free period, through both the continuous flicker method (CFM) and the forced choice method (FCM). Migraineurs presented a mean flickering fusion threshold lower than healthy controls with the CFM (40.45 vs. 44.33, respectively; P = 0.019) and with the FCM (34.16 Hz vs. 38.5 Hz, respectively, P = 0.019). Both groups of migraineurs had significantly lower thresholds as compared to controls, migraineurs with aura presenting the lowest thresholds for the fusion of flickering (P = 0.008 and P = 0.0001 with the CFM and the FCM, respectively). Results confirmed and extended previous observations of abnormal flicker fusion thresholds in migraineurs. We hypothesize that this finding might be related to a shorter cortical stimulation silent period.

引用

页码：339 / 343

页数：5

共 21 条

[1] The cortical silent period is shortened in migraine with aura [J].