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Influence of Lateral Masking on Contrast Detection Thresholds of Bars Differing in Width

机译：横向掩蔽对宽度不同的钢筋对比检测阈值的影响

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摘要

Contrast detection thresholds for bars 1, 2, or 3 arcmin wide and 1 deg long were estimated in the presence of high-contrast flank bars of the same size. The distance between the flank and the test bars varied from 1 to 30 arcmin. Regardless of the bar width, the thresholds increased when the test and flank bars were in a summation zone 6-8 arcmin wide. With increasing distance between the test and flank bars, the thresholds decreased and reached a plateau. The results testified to an influence of surrounding patterns on the responses of individual receptive fields of neurons processing the test stimuli rather than to lateral interactions between the fields. An attempt was made to apply this explanation to the results of earlier studies concerning the lateral interactions of spatial frequency channels in tasks consisting of detection of objects masked in the same manner.
机译：在存在相同大小的高对比度侧面钢筋的情况下，估计了1、2或3 arcmin宽和1度长的钢筋的对比度检测阈值。侧面和测试条之间的距离为1至30 arcmin。无论条宽如何，当测试条和侧条条的总和区域为6-8 arcmin宽时，阈值都会增加。随着测试杆和侧面杆之间距离的增加，阈值降低并达到平稳状态。结果证明，周围模式对处理测试刺激的神经元单个感受野的反应的影响，而不是对场之间的横向相互作用的影响。试图将这种解释应用到有关空间频率信道横向交互作用的早期研究结果中，该任务包括检测以相同方式掩盖的物体。

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  • 来源
    《Human physiology》 |2004年第2期|p.137-144|共8页
  • 作者

    M. V. Danilova; V. M. Bondarko;

  • 作者单位

    Pavlov Institute of Physiology, Russian Academy of Sciences, nab. Makarova 6, St. Petersburg, 199034 Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物科学;
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