Wooten Billy R, Renzi Lisa M, Moore Robert, Hammond Billy R
Biomed Opt Express. 2010 Jul 14;1(1):47-58. doi: 10.1364/BOE.1.000047.
One of the more significant indicators of neural age-related loss and disease is reduced temporal processing speed. It would, therefore, be useful to have an accurate and practical device that measures the full range of an individual's temporal processing abilities (characterized as the temporal contrast sensitivity function, TCSF). 70 subjects (15-84 yrs) were tested. A small tabletop device utilizing electronic control of light-emitting diodes (LEDs) was constructed that delivered a 1-degree, 660 nm test (the modulation depth of which could be adjusted directly by the subject) centered within a 10-degree 660 nm surround. The method provided a TCSF that had a shape consistent with past studies (peaking around 8 Hz). Also consistent with past work, the largest age-decline was found at the highest frequencies and for the central fovea (r = 0.47, p<0.0001, ~2 Hz per decade). Psychophysical assessment of temporal vision offers an easy and dynamic measure of central visual function.
与年龄相关的神经功能衰退和疾病的一个较为显著的指标是颞部处理速度的降低。因此，拥有一种准确且实用的设备来测量个体颞部处理能力的全范围（以颞部对比敏感度函数，即TCSF来表征）会很有用。对70名受试者（年龄在15 - 84岁之间）进行了测试。构建了一种利用发光二极管（LED）电子控制的小型桌面设备，该设备发出一个1度、660纳米的测试光（其调制深度可由受试者直接调节），该测试光位于一个10度、660纳米的背景光中心。该方法提供的TCSF形状与过去的研究一致（在约8赫兹处达到峰值）。同样与过去的研究结果一致的是，在最高频率以及中央凹处发现了最大的年龄下降（r = 0.47，p<0.0001，每十年约2赫兹）。对颞部视觉的心理物理学评估为中央视觉功能提供了一种简便且动态的测量方法。
