Human efficiency for discrimination of 3-D symmetry.

ABSTRACT

Evaluated the statistical efficiency of humans for discrimination between 3-D symmetry, and 3-D randomness which was non-symmetrical about a sagittal plane but symmetrical about a vertical axis in the fronto-parallel projection plane. The discriminability of Os was obtained and compared with that of the ideal cross correlator. In general, the efficiency was lower than that for 2-D symmetry discrimination, but similar to that for other 3-D tasks using dot sterograms. Moreover, the efficiency for 3-D symmetry discrimination was lower when the pattern was composed of more elements, and it decreased along with increment of the noise variance in longer duration conditions.

AUTHOR Yakushijin, Reiko; Ishiguchi, Akira

AFFILIATION Utsunomiya U, Faculty of Engineering, Dept of Information Science, Utsunomiya, Japan

SOURCE Japanese Journal of Psychology. 1998 Aug Vol 69(3) 206-215