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

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Computer analysis of monochromatic drawings by mentally healthy people and patients with schizophrenia. / Pronin, S. V.; Shoshina, I. I.; Shelepin, Yu E.

In: Journal of Optical Technology (A Translation of Opticheskii Zhurnal), Vol. 82, No. 10, 10.2015, p. 707-710.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{dc17618c9c7d4a6391f67c8ccff359e7,

title = "Computer analysis of monochromatic drawings by mentally healthy people and patients with schizophrenia",

abstract = "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.",

author = "Pronin, {S. V.} and Shoshina, {I. I.} and Shelepin, {Yu E.}",

year = "2015",

month = oct,

doi = "10.1364/JOT.82.000707",

language = "English",

volume = "82",

pages = "707--710",

journal = "Journal of Optical Technology (A Translation of Opticheskii Zhurnal)",

issn = "1070-9762",

publisher = "The Optical Society",

number = "10",

}

RIS

TY - JOUR

T1 - Computer analysis of monochromatic drawings by mentally healthy people and patients with schizophrenia

AU - Pronin, S. V.

AU - Shoshina, I. I.

AU - Shelepin, Yu E.

PY - 2015/10

Y1 - 2015/10

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84959360759&partnerID=8YFLogxK

U2 - 10.1364/JOT.82.000707

DO - 10.1364/JOT.82.000707

M3 - Article

AN - SCOPUS:84959360759

VL - 82

SP - 707

EP - 710

JO - Journal of Optical Technology (A Translation of Opticheskii Zhurnal)

JF - Journal of Optical Technology (A Translation of Opticheskii Zhurnal)

SN - 1070-9762

IS - 10

ER -

ID: 38359393