Key points
Tilt perception is formed from the vestibular and somatosensory input.
We improved an electric goniometer that enabled digital display of the tilt angle
for easy analysis of the results to study the tilt perception and short term memory
of tilt perception.
It became clear that the vestibules are less important than the somatosensory
input.
The bilateral group could also successfully remember tilt positions.
It is clear that such information is remembered for at least a short period of time.