A
Static Image of a Rapidly Moving Pattern Can Be Perceived by Making
a Saccade
Y. Takeda, M. Nagai, K. Kazai & A. Yagi |
Ten
undergraduate and two graduate students were required to identify
the moving patterns. The two patterns were made of triangles; one
with apices pointing up and the other with apices pointing down.
A given pattern was moved rapidly on a CRT and the subject was asked
to watch and say whether the triangles pointed up or down. When they
fixated a single point, the correct responses were near chance. When
they made a saccade across the moving pattern, their detection performance
was significantly better. The subjects reported that they could perceive
the static image of the pattern when the saccade was made. This result
might be explained by the hypothesis that saccadic suppression reduces
excessive visual input. Key words: saccade, moving pattern, pattern identification, static image, saccadic suppression |