Effects of sweet and bitter gustatory stimuli in anorexia nervosa on EEG frequency spectra

Erika Tóth, Ferenc Túry, Ágnes Gáti, Júlia Weisz, István Kondákor, Márk Molnár

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The possible differences in processing gustatory stimuli in anorexic patients compared to healthy control subjects was investigated by electrophysiological methods. The electroencephalogram (EEG) was recorded in outpatients treated with anorexia nervosa (AN) and age-matched controls after exposure to sweet (milk chocolate) and bitter (black tea) taste stimuli. Power spectrum analysis was performed on EEG epochs recorded in the above conditions. Compared to controls a significantly higher percent of theta, and lower percent of alpha1 band power was found in anorexic patients, irrespective of the kind of taste effects and hemispheric side. The pattern of activation caused by sweet and bitter stimuli was found to be different in these two groups, possibly indicating altered gustatory processing mechanisms in AN.

Original languageEnglish
Pages (from-to)285-290
Number of pages6
JournalInternational Journal of Psychophysiology
Issue number3
Publication statusPublished - May 1 2004



  • Anorexia nervosa
  • Electroencephalogram
  • Power spectrum
  • Sweet and bitter taste

ASJC Scopus subject areas

  • Neuroscience(all)
  • Neuropsychology and Physiological Psychology
  • Physiology (medical)

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