Studies of the parvocellular and magnocellular visual channels in health and psychopathology

Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1007/s11055-014-9902-9

Ключевые слова: magnocellular and parvocellular visual channels, Muller-Lyer illusion, schizophrenia, spatial-frequency filtration, visual perception, wavelets, article, cell function, clinical feature, controlled study, disease association, disease predisposition, human, image analysis, magocellular visual channel, mental disease, molecular biology, molecular dynamics, molecular imaging, muller lyer illusion, outcome assessment, parvocellular visual channel, sensitivity analysis, signal transduction, spatial frequency discrimination, visual illusion, visual stimulation, wavelet analysis

Аннотация: Susceptibility to the Muller-Lyer illusion was studied in healthy subjects and patients with schizophrenia. The experiments used images subjected to wavelet filtration and containing spectra consisting of high or low spatial frequencies. Patients at the initial state of the clinical manifestations of schizophrenia were more susceptible to the Muller-Lyer illusion than normal observers on presentation of images with spectra consisting of high spatial frequencies, to which neurons in the parvocellular pathway are more sensitive. At the same time, there was no difference in the susceptibility to the Muller-Lyer illusion on presentation of images with spectra consisting of low spatial frequencies, to which neurons in the magnocellular pathway are more sensitive. Patients with long-term schizophrenia were more susceptible to illusions on presentation of all Muller-Lyer illusion images. These data are interpreted as evidence for impairments to the functioning of the parvocellular visual channels at the stage of the early clinical manifestations of schizophrenia, with preservation of the functioning of the magnocellular channel. Patients with long-term schizophrenia were characterized by impairments to both the parvocellular and magnocellular visual channels. © 2014 Springer Science+Business Media New York.

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Издание

Журнал: Neuroscience and Behavioral Physiology

Выпуск журнала: Vol. 44, Is. 2

Номера страниц: 244-248

Авторы

  • Shoshina I.I. (Krasnoyarsk State Medical University)
  • Shelepin Y.E. (I. P. Pavlov Institute of Physiology,Russian Academy of Sciences)
  • Pronin S.V. (I. P. Pavlov Institute of Physiology,Russian Academy of Sciences)
  • Konkina S.A. (Regional Psychoneurology Clinic)
  • Bendera A.P. (Regional Psychoneurology Clinic)

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