| Abstract: | Abstract: The present research aimed to identify the important factor that makes it difficult to re‐acquire upright vision when wearing visually transposed goggles. The author wore left‐right reversing goggles and up‐down reversing goggles each for 14 days in 1986 and in 1990, respectively. When lying on one side with the left‐right reversing goggles on, the observer could get upside‐down vision, which made it possible to compare the difficulty of attaining upright vision when wearing up‐down reversing goggles. The only difference between the two situations is the dimension of the body image to be exchanged: The observer had to exchange the left and right halves of his body in the former situation and had to exchange along the top‐bottom axis of body in the latter situation. Introspective data revealed that attaining an upright sense is easier in the former situation; this means that the asymmetrical structure of our body in the top‐bottom dimension is an important factor in the difficulty of re‐acquiring upright vision. |
