Stimulus duration and angular velocity are interdependent in auditory motion

Evidence

We performed two experimental series. Series 1 had effective stimulus durations of 75, 150 and 225 ms and provided stimulus velocities of between 53 and 960°/s. Series 2 had effective stimulus durations of 30, 60 and 90 ms and provided stimulus velocities of between 133 and 2400°/s. Note that stimulus duration and stimulus velocity are interdependent variables. The relation between sensitivity and the parameters stimulus duration, angular range, and stimulus velocity was analysed by linear regression. We will use the regressions’ coefficient of determination (R2 ) and associated ANOVA results to describe the contribution of each of the three parameters to the perception of a change in motion direction. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3192

Categorization

• QUESTION: For a given angular range, duration and velocity are inversely coupled — how do they parse each parameter’s independent contribution when the design cannot fully decouple them?