Comparison of cortical excitability in chronic migraine (transformed migraine) and migraine without aura - A transcranial magnetic stimulation study

Ozturk V., Cakmur R., Donmez B., Yener G., Kursad F., Idiman F.

JOURNAL OF NEUROLOGY, sa.9, ss.1268-1271, 2002 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1007/s00415-002-0834-x
  • Dergi Adı: JOURNAL OF NEUROLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.1268-1271
  • Anahtar Kelimeler: cortical excitability, magnetic stimulation, motor evoked potentials, chronic migraine, MOTOR CORTEX EXCITABILITY, PATIENTS EXHIBIT ABNORMALITIES, SILENT PERIOD, INHIBITION, HYPEREXCITABILITY, PLASMA, BRAIN, DRUGS
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

We studied the excitability of the motor cortex in patients with migraine without aura (MWOA) (n = 20) and with chronic migraine (CM) (n = 20) using transcranial magnetic stimulation (TMS). By using a 90-mm circular coil placed over the vertex and recording of the first dorsal interosseous muscle, we measured thresholds, latencies and amplitudes of motor evoked potentials and duration of cortical silent periods in patient groups and in controls (n = 20). No differences were found between groups for threshold, latency and amplitude values. However, the duration of the cortical silent period was longer in CM patients, being significantly different from both controls and MWOA. We suggest that either this difference in cortical excitability may develop during transformation from MWOA to CM or different pathophysiological mechanisms may play a role in these two headache syndromes.