Computer analysis of monochromatic drawings by mentally healthy people and patients with schizophrenia

S. V. Pronin, I. I. Shoshina, Yu E. Shelepin

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

This paper presents the results of a comparative computer analysis of monochromatic drawings by mentally healthy subjects and patients with schizophrenia. The contours of the images were distinguished in each of the drawings, after which the following characteristics were calculated: the total length of all the contours of the image, the mean size of the image, and the ratio of the total length of the contours to the mean size. The spatial-frequency spectra of the images were also computed. It is established that the mean size of the drawings and the relative length of the contours in the drawings by the patients with schizophrenia are less than in those of the healthy subjects- i.e., the drawings of the patients with schizophrenia are less detailed. Moreover, these drawings are characterized by a certain rise of the spectrum in the region of medium spatial frequencies. As shown by a computer experiment, on the basis of an analysis of twenty arbitrarily chosen drawings by the patients with schizophrenia, a positive diagnosis can be delivered in 92% of all the cases. When the same sample of drawings by healthy subjects is analyzed, the probability of an incorrect diagnosis was 6.5%. The resulting data are regarded as evidence of dysfunction when there is schizophrenia of the magnocellular system, which provides a global analysis of the images and an increase of the internal noise level of the visual system.

Язык оригиналаанглийский
Страницы (с-по)707-710
Число страниц4
ЖурналJournal of Optical Technology (A Translation of Opticheskii Zhurnal)
Том82
Номер выпуска10
DOI
СостояниеОпубликовано - окт 2015

Предметные области Scopus

  • Атомная и молекулярная физика и оптика
  • Технология (все)
  • Вычислительная математика
  • Прикладная математика

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