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Reduction of Temporalis Exteroceptive Suppression by Peripheral Electrical Stimulation in Migraine and Tension-Type Headaches
Wang, W.; Schoenen, Jean
1994In Pain, 59 (3), p. 327-34
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Abstract :
[en] Inhibition of the second exteroceptive suppression of temporalis muscle activity (ES2) produced by a preceding electrical stimulus applied at the index was studied in patients suffering from migraine without aura (MO), chronic (CTH) or episodic (ETH) tension-type headache. Each patient group comprised of 12 subjects was compared to a group of healthy controls. Mean duration of unconditioned ES2, measured on 10 averaged rectified responses after labial stimulation at a 0.1 Hz frequency, was reduced in CTH only. From stimulation intensities of 20 mA onward, peripheral-induced inhibition of temporalis ES2 was significantly more pronounced in both subtypes of tension-type headache compared to migraineurs or controls. After an index finger stimulus of 20 mA, temporalis ES2 was abolished in 83% of CTH, 67% of ETH, 25% of MO patients and 8% of controls, whereas unconditioned ES2 was present in all patients. Among 9 ETH patients with normal (> or = 32 msec) unconditioned ES2, 5 had total disappearance of ES2 after a 20 mA index stimulation. These results demonstrate that peripheral conditioning at 20 mA increases the diagnostic sensitivity of ES2 studies. They suggest that the changes observed in tension-type headache are due to hyperexcitability of the reticular nuclei which inhibit the medullary inhibitory interneurons mediating ES2.
Disciplines :
Neurosciences & behavior
Neurology
Author, co-author :
Wang, W.
Schoenen, Jean  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Neuro-anatomie
Language :
English
Title :
Reduction of Temporalis Exteroceptive Suppression by Peripheral Electrical Stimulation in Migraine and Tension-Type Headaches
Publication date :
December 1994
Journal title :
Pain
ISSN :
0304-3959
eISSN :
1872-6623
Publisher :
Elsevier, Netherlands
Volume :
59
Issue :
3
Pages :
327-34
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 September 2009

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