Guideline effects on the movement accuracy in virtual torus spaces with various guidelines are investigated by means of moving deviations from an indicated path. Guidelines with various widths are set at the center or the sides (upper, lower, left and right) in virtual torus spaces. Participants travel at a constant velocity in full-sized virtual torus spaces for various guideline conditions. It is shown that there exists a tendency that moving deviations from the indicated path are more reduced as the guideline width becomes narrower and the movement accuracy is improved. For example, in the case of side guidelines with the width of 10 cm or less, the mean value of moving deviations is approximately reduced to half of that with no guidelines. By setting side guidelines, the value of the standard deviation of moving deviations is approximately reduced to 2/3 of that with no guidelines.

Fluctuation characteristics of character centroid intervals in laterally written Japanese sentences are investigated by means of their spatial frequency characteristics. Power spectra of character centroid intervals in their longitudinal and transverse directions are obtained for handwritten and word processor printed sample sentences. It is shown that for fluctuation characteristics in the longitudinal direction, power spectra are inversely proportional to their spatial frequencies for handwritten sentences and proportional to them for word processor printed sentences, and there exists a remarkable difference between handwritten and word processor printed sentences. It is also shown that for fluctuation characteristics in the transverse direction, power spectra are proportional to their spatial frequencies for both handwritten and word processor printed sentences, and there is no remarkable difference between handwritten and word processor printed sentences.