Background: Migraine has complex pathophysiological characteristics and episodic attacks. To decipher the cyclic neurophysiological features of migraine attacks, in this study, we compared neuronal excitability in the brainstem and primary somatosensory (S1) region between migraine phases for 30 consecutive days in two patients with episodic migraine. Methods: Both patients underwent EEG recording of event-related potentials with the somatosensory and paired-pulse paradigms for 30 consecutive days. The migraine cycle was divided into the following phases: 24-48 h before headache onset (Pre2), within 24 h before headache onset (Pre1), during the migraine attack (Ictal), within 24 h after headache offset (Post1), and the interval of ˃48 h between the last and next headache phase (Interictal). The normalised current intensity in the brainstem and S1 and gating ratio in the S1 were recorded and examined. Results: Six migraine cycles (three for each patient) were analysed. In both patients, the somatosensory excitability in the brainstem (peaking at 12-14 ms after stimulation) and S1 (peaking at 18-19 ms after stimulation) peaked in the Pre1 phase. The S1 inhibitory capability was higher in the Ictal phase than in the Pre1 phase. Conclusion: This study demonstrates that migraine is a cyclic excitatory disorder and that the neural substrates involved include the somatosensory system, starting in the brainstem and spanning subsequently to the S1 before the migraine occurs. Further investigations with larger sample sizes are warranted.

Dynamic brainstem and somatosensory cortical excitability during migraine cycles / Hsiao, Fu-Jung; Chen, Wei-Ta; Pan, Li-Ling Hope; Liu, Hung-Yu; Wang, Yen-Feng; Chen, Shih-Pin; Lai, Kuan-Lin; Coppola, Gianluca; Wang, Shuu-Jiun. - In: THE JOURNAL OF HEADACHE AND PAIN. - ISSN 1129-2369. - 23:1(2022), pp. 1-12. [10.1186/s10194-022-01392-1]

Dynamic brainstem and somatosensory cortical excitability during migraine cycles

Coppola, Gianluca
Penultimo
Writing – Review & Editing
;
2022

Abstract

Background: Migraine has complex pathophysiological characteristics and episodic attacks. To decipher the cyclic neurophysiological features of migraine attacks, in this study, we compared neuronal excitability in the brainstem and primary somatosensory (S1) region between migraine phases for 30 consecutive days in two patients with episodic migraine. Methods: Both patients underwent EEG recording of event-related potentials with the somatosensory and paired-pulse paradigms for 30 consecutive days. The migraine cycle was divided into the following phases: 24-48 h before headache onset (Pre2), within 24 h before headache onset (Pre1), during the migraine attack (Ictal), within 24 h after headache offset (Post1), and the interval of ˃48 h between the last and next headache phase (Interictal). The normalised current intensity in the brainstem and S1 and gating ratio in the S1 were recorded and examined. Results: Six migraine cycles (three for each patient) were analysed. In both patients, the somatosensory excitability in the brainstem (peaking at 12-14 ms after stimulation) and S1 (peaking at 18-19 ms after stimulation) peaked in the Pre1 phase. The S1 inhibitory capability was higher in the Ictal phase than in the Pre1 phase. Conclusion: This study demonstrates that migraine is a cyclic excitatory disorder and that the neural substrates involved include the somatosensory system, starting in the brainstem and spanning subsequently to the S1 before the migraine occurs. Further investigations with larger sample sizes are warranted.
2022
brainstem; excitability; inhibition; migraine cycle; primary somatosensory cortex (S1)
01 Pubblicazione su rivista::01a Articolo in rivista
Dynamic brainstem and somatosensory cortical excitability during migraine cycles / Hsiao, Fu-Jung; Chen, Wei-Ta; Pan, Li-Ling Hope; Liu, Hung-Yu; Wang, Yen-Feng; Chen, Shih-Pin; Lai, Kuan-Lin; Coppola, Gianluca; Wang, Shuu-Jiun. - In: THE JOURNAL OF HEADACHE AND PAIN. - ISSN 1129-2369. - 23:1(2022), pp. 1-12. [10.1186/s10194-022-01392-1]
File allegati a questo prodotto
File Dimensione Formato  
Hsiao_Dynamic-brainstem_2022.pdf

accesso aperto

Note: https://thejournalofheadacheandpain.biomedcentral.com/articles/10.1186/s10194-022-01392-1
Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 4.3 MB
Formato Adobe PDF
4.3 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1609675
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 9
social impact