Response time as a discriminator between true- and false-positive responses in suprathreshold perimetry.

摘要: PURPOSE: To report on differences between the latency distributions of responses to stimuli and false-positive catch trials in suprathreshold perimetry. describe an algorithm for defining response time windows its performance discriminating true- basis (RT). METHODS: A sample 435 largely inexperienced patients underwent visual field examination a perimeter that was modified record RTs. Data were analyzed from 60,500 523 trials. RESULTS: False-positive had much more variable latencies than stimuli. An RT z-transformed individual samples correctly identified 70% trials, whereas fewer 3% classified as responses. CONCLUSIONS: Latency analysis can be used detect substantial proportion Rejection such may increase reliability screening by reducing variability bias small but clinically important patients.