Effects of Delayed Visual Control on Writing, Drawing and Tracing

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Abstract
Writing, drawing to verbal instruction and tracing were recorded on a combination of a telescriber with a short-term information store resulting in visual delay. The resulting conflict of visual and kinaesthetic feed-back slowed down performance and resulted in errors such as overshooting, repetition and wrong spacing. Measurable effects such as the duration of writing and the error area in tracing could be shown over the observed range to increase with the amount of delay. These results are compared with those of previous experiments in the visual and acoustic fields and certain similarities and differences are discussed.

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