Lee Barry B, Rüttiger Lukas, Sun Hao
SUNY College of Optometry, 33 West 42nd Street, NY 10036, USA.
Perception. 2005;34(8):975-81. doi: 10.1068/p5200.
Vernier acuity thresholds can be related to visibility of targets. This is considered in relation to retinal signals. Spatial precision of macaque ganglion cell responses to moving targets was assessed by neurometric analysis and compared with psychophysical performance. Under some conditions the amplitude of ganglion cell signals per se may relate target visibility to spatial precision of psychophysical performance. Other conditions are more complex; we suggest central mechanisms may adapt their properties, eg their dimensions, depending on the stochastic properties of ganglion cell signals. Thus, the relation of Vernier acuity to the visibility of targets is a rule of thumb which has a complex relation to physiological substrates.
游标视力阈值可能与目标的可见性相关。这是从视网膜信号的角度来考虑的。通过神经测量分析评估了猕猴神经节细胞对移动目标反应的空间精度，并与心理物理学表现进行了比较。在某些情况下，神经节细胞信号本身的幅度可能将目标可见性与心理物理学表现的空间精度联系起来。其他情况则更为复杂；我们认为中枢机制可能会根据神经节细胞信号的随机特性来调整其属性，例如其维度。因此，游标视力与目标可见性之间的关系是一个经验法则，它与生理基础有着复杂的关系。
