Investigating the effect of space frequency modulation of visual stimuli on the visual acuity of the optic cortex

Abstract

BACKGROUND AND OBJECTIVE: The choice of the response of the visual cortex to different space frequencies has been studied in several studies. The importance of the present study is to investigate the role of space frequency modulation in determining the magnitude of different neoplasms, and measure various types of myopia. The purpose of this study was to investigate the effect of modulation of visual acuity space frequencies on the response of the visual cortex in bipolar mode by magnetic resonance imaging. METHODS: In an analytical study, 12 people (5 males and 7 females) participated in the study. It was decided that they were right-handed, had no specific disease (neurological and systemic) and had no refractive errors. The pupil size was measured by visual acuity; magnetic resonance imaging was performed using a Phillips MRI device with a magnitude 1.5 Tesla magnetic field. Since the duration of each test was 4 minutes (consisting of 8 blocks of 30 seconds). IRCT:2016021326538N2 FINDINGS: There was a significant relationship between refractive error and fuzzy state with diopter 1.00+ lens at mid-frequency (p=0.005) and high (p=0.03). Additionally, there was a refractive error between the refractive error and false positives with a diopter of 3.00+ lens at high space frequency (p=0.009). The variation in the number of activated vasks is significant only in the mid space frequency, and in comparison with the refractive error and artificially constructed near-diopter 1.00+ lens (p=0.026). CONCLUSION: Considering the efficacy of optic optics due to proximity to the response of the visual cortex, the necessity of correcting any refractive errors in visual science studies and related studies, such as neuroscience studies, as well as the separation and separation of refractive errors from neurological factors affecting the cortex response, Becomes. © 2017, Babol University of Medical Sciences. All rights reserved.