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M Heddle

Publications and source records attributed to M Heddle.

2 recordsLinked to original sources

Visual persistence as a function of spatial frequency and age.

Duration of visual persistance of sine-wave gratings of 1,2,4,8,12, and 16 cycles deg-1 was determined for seven-year-old, ten-year-old, and thirteen-year-old children. It was found that there was a decrease in persistence duration with age but the slope of this function for the different age groups did not change.

Adolescent