Features of Perception of Length of Segments under Conditions of Ponzo and Muller-Lyer Illusions in Schizophrenia

Тип публикации: статья из журнала

Год издания: 2011

Ключевые слова: visual perception, schizophrenia, Ponzo illusion, Muller-Lyer illusion, length of segments, global analysis, spatial-frequency filtration

Аннотация: In order to better appreciate the neurophysiologic mechanisms of perception of length under conditions of geometrical visual illusions, we studied sensitivity of mentally healthy subjects and schizophrenic patients to Ponzo and Muller-Lyer illusion. Patients with schizophrenia estimated length of segments of Muller-Lyer figure less precisely. Accuracy of perception of length of segments in Ponzo figure was ambiguously connected with the duration of the disease. Persons suffering from schizophrenia for a short time were less inclined to Ponzo illusion than mentally healthy subjects. On the contrary, patients who suffered from schizophrenia for a long time were more sensitive to this illusion. Ponzo illusion can be used as a marker of schizophrenia which is found out during the specific period of development of the disease. High sensitivity of patients with schizophrenia to Muller-Lyer and Ponzo illusions supports a hypothesis about the role of the global analysis of an image during processing of its low-frequency component in formation of the illusions under study.

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Издание

Журнал: ZHURNAL VYSSHEI NERVNOI DEYATELNOSTI IMENI I P PAVLOVA

Выпуск журнала: Vol. 61, Is. 6

Номера страниц: 697-705

ISSN журнала: 00444677

Место издания: MOSCOW

Издатель: MEZHDUNARODNAYA KNIGA

Авторы

  • Shoshina I.I. (Siberian Fed Univ, Dept Mental Hlth, Krasnoyarsk, RussiaKrasnoyarsk Reg Psychoneurol Clin, Krasnoyarsk, RussiaRussian Acad Sci, Pavlov Inst Physiol, St Petersburg, Russia)
  • Perevozchikova I.N.
  • Konkina S.A.
  • Pronin S.V.
  • Shelepin Yu. E.
  • Bendera A.P.

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