Effect of Variation of Spatial and Temporal Frequencies of the Moving Field Visual Stimulus on Optokinetic Response of Adult Zebrafish.

IF 1.2
Zebrafish Pub Date : 2025-10-01 Epub Date: 2025-08-06 DOI:10.1177/15458547251365847
Barnini Bhattacharya, Shibsankar Roy, Bijay Bal, Shankarashis Mukherjee, Anuradha Bhat, Kuntal Ghosh
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Abstract

The optokinetic response (OKR) is a reflexive behavior in which the eye intends to fixate the surrounding image in motion on its retina. The two important components of the OKR visual stimulus are the spatial frequency (SF) and the temporal frequency (TF). Zebrafish (Danio rerio) is considered an important model animal for visual physiology research. As a result, several works have been performed recently on zebrafish OKR in terms of their visual acuity or eye velocity. In the present study, a novel data pattern has been reported in terms of the relationship between ocular movement frequency (OMF) and TF of the visual stimulus in the presence of two types of SF of the optokinetic visual stimulus. The results indicated that at the basal SF (0.05 cycles per degree [cpd]), the OMF significantly increased (p < 0.05) with the corresponding elevation in the TF (till 240 deg.s-1). On the contrary, at a higher SF (0.29 cpd), there was a significant decrease (p < 0.05) in the OMF with the increase in TF.

运动场视觉刺激的时空频率变化对成年斑马鱼光动力反应的影响。
光动力反应(OKR)是一种反射性行为,在这种行为中,眼睛将周围的运动图像固定在视网膜上。OKR视觉刺激的两个重要组成部分是空间频率(SF)和时间频率(TF)。斑马鱼被认为是视觉生理学研究的重要模型动物。因此,最近对斑马鱼OKR的视觉敏锐度或眼速进行了几项研究。本研究报道了在两种类型的光动力视觉刺激的SF存在下,眼动频率(OMF)与视觉刺激的TF之间的一种新的数据模式。结果表明,在基础SF (0.05 cycles per degree [cpd])下,随着相应的TF升高(至240°s-1), OMF显著增加(p < 0.05)。相反,在较高的SF (0.29 cpd)下,随着TF的增加,OMF显著降低(p < 0.05)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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