1993 Fiscal Year Final Research Report Summary
Spatiotemporal integration of visual information during eye movements
| Project/Area Number |
04610042
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Psychology
|
|---|
| Research Institution | Niigata University |
|---|
Principal Investigator |
HONDA Hitoshi Niigata University, Professor, 人文学部, 教授 (50124623)
|
|---|
| Project Period (FY) |
1992 – 1993
|
| Keywords | Eye movements / Saccade / Visual localization / Space perception / Eye position signal |
|---|
| Research Abstract |
There is a possibility that visual mislocalization of targets flashed at a point in time near to that of a saccadic eye movement is due almost entirely to the shift of the retinal image of the background. To clarify this matter, errors in target localization were analyzed in both saccadic eye movement and moving background conditions. In the latter condition, the subject kept fixating and the visual background made a saccadic movement. Large localization errors were shown in both conditions. However, the pattern of error for the moving background condition was distinctively different from that for the saccadic eye movement condition, suggesting that the shift of the background image is not sufficient to explain the localization error in the saccadic eye movement condition.
Next, the locus of the visual system responsible for producing the localization error was examined by separately presenting a target stimulus and the background to the left and the right eye, respectively (i.e., dichoptic presentation). The results indicated that, in both the moving background and the saccadic eye movement conditions, mislocalization was generated at not the retinal but the central level of the visual system.
|
