Vision without inversion of the retinal image

Abstract

Concluded the study of adaptation to an inverted visual field (see PA: Vol 4:52756). Reports the experiences of the last two days of the 8 day experiment. The S was more adapted to his body and even ideas of objects were in accordance with the reversed visual field. The extent of movement was however inappropriate, and a confusion persisted in the localization of the body parts. On replacing the lenses with an empty black lined paper tube at the end of the experiment. The visual image relapsed to its original form but images from the experimental situation kept interfering. Concluded that the visual system is a relatively stable structure, however adjustment is required. The inverted position of the retinal image is not essential to upright vision as it does not contribute towards harmony between touch and sight. Direction of movement is not judged on purely muscular evidence but on subjective experience and perception.