Biomedical subjects

J R Devane

Publications and source records attributed to J R Devane.

3 recordsLinked to original sources

PubMed1993

The method of reproduction and Mueller-Lyer changes.

In a three-variable study of Mueller-Lyer decrement, each of eight independent groups of 10 subjects responded 30 times to one of the two Mueller-Lyer components by the Method of Reproduction. The mean of the initial Out response was significantly greater absolutely than that of the In response. All three interactions were significant. The In figure demonstrated illusion decrement across the 30 trials, but the Out figure demonstrated illusion increment.

Adult↗

PubMed1990

Exemplar effect in Mueller-Lyer decrement.

Coren and Girgus in 1972 had each of their subjects inspect one of four Mueller-Lyer variants with the two segments set equal. In six interspersed Average Error test trials with the initial setting at zero illusion, the variants showed similar decremental rates. In 1962 Day had observed decrement when the test trials began with the segments equal; Eysenck and Slater in 1958 found no decrement when the test trials started with the segments clearly dissimilar. Present subjects addressed figures having either equal or unequal segments, and, over six trials, with and without inspection periods, came to approach the presented figures as exemplars.

Adult↗

PubMed1977

Acquisition of two gaze-contingent aftereffects.

Previous studies have shown that subjects could acquire a prismatic aftereffect contingent on the direction of gaze. Other studies have shown that subjects could acquire two simultaneous aftereffects with multiple cues. In the present study 12 subjects practiced alternately under two opposite 20-diopter lateral displacements and displayed two gaze-contingent aftereffects.

Adaptation, Physiological↗