Study of the excitability cycle of the blink reflex in huntington’s chorea

Tommaso Caraceni, Giuliano Avanzini, Roberto Spreafico, Silvio Negri, Giovanni Broggi, Floriano Girotti

Research output: Contribution to journalArticle

Abstract

The trigemino-facial reflex was studied in 7 patients affected by Huntington’s chorea and in 10 patients affected by Parkinson’s disease. The results show a different behavior of the habituation phenomenon in the two groups of patients: It is enhanced in the choreic and abolished in the parkinsonian patients. The main changes concern the time course of the second phase (the first inhibitory phase) of the reflex excitability cycle, in fact, the inhibitory phase appears very pronounced and prolonged in huntingtonian patients and reduced or abolished in parkinsonian patients. Some pathophysiological mechanisms involved in the control of the trigemino-facial reflex excitability are discussed with particular regard to the role of the hemispheric structures.

Original languageEnglish
Pages (from-to)465-472
Number of pages8
JournalEuropean Neurology
Volume14
Issue number6
DOIs
Publication statusPublished - 1976

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Blinking
Huntington Disease
Reflex
Parkinson Disease

Keywords

  • Blink reflex
  • Excitability cycle
  • Habituation
  • Huntington’s chorea

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology

Cite this

Caraceni, T., Avanzini, G., Spreafico, R., Negri, S., Broggi, G., & Girotti, F. (1976). Study of the excitability cycle of the blink reflex in huntington’s chorea. European Neurology, 14(6), 465-472. https://doi.org/10.1159/000114774

Study of the excitability cycle of the blink reflex in huntington’s chorea. / Caraceni, Tommaso; Avanzini, Giuliano; Spreafico, Roberto; Negri, Silvio; Broggi, Giovanni; Girotti, Floriano.

In: European Neurology, Vol. 14, No. 6, 1976, p. 465-472.

Research output: Contribution to journalArticle

Caraceni, T, Avanzini, G, Spreafico, R, Negri, S, Broggi, G & Girotti, F 1976, 'Study of the excitability cycle of the blink reflex in huntington’s chorea', European Neurology, vol. 14, no. 6, pp. 465-472. https://doi.org/10.1159/000114774
Caraceni T, Avanzini G, Spreafico R, Negri S, Broggi G, Girotti F. Study of the excitability cycle of the blink reflex in huntington’s chorea. European Neurology. 1976;14(6):465-472. https://doi.org/10.1159/000114774
Caraceni, Tommaso ; Avanzini, Giuliano ; Spreafico, Roberto ; Negri, Silvio ; Broggi, Giovanni ; Girotti, Floriano. / Study of the excitability cycle of the blink reflex in huntington’s chorea. In: European Neurology. 1976 ; Vol. 14, No. 6. pp. 465-472.
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