| Project/Area Number |
03551001
|
|---|
| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Psychology
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
AIBA Satoru Hokkaido University, Fac.of Letters, Professor Department of Behavioral Science, 文学部, 教授 (40000559)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
FUNAKAWA Masami Basic Research Laboratory Research Associate Nissan Motors company, 基礎研究所, 研究員 (10192733)
TAKAHASHI Masaharu Hokkaido University, Fac.of Letters, Associate Professor Department of Behaviora, 文学部, 助手 (80183060)
TAYAMA Tadayuki Hokkaido University, Fac.of Letters, Associate Professor Department of Behaviora, 文学部, 助教授 (50163704)
ABE Jun-ichi Hokkaido University, Fac.of Letters, Associate Professor Department of Behaviora, 文学部, 助教授 (40091409)
|
|---|
| Project Period (FY) |
1991 – 1993
|
| Project Status |
Completed (Fiscal Year 1993)
|
| Budget Amount *help |
¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 1993: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1992: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1991: ¥3,900,000 (Direct Cost: ¥3,900,000)
|
|---|
| Keywords | Visual acuity test / Saturation / Temporal resolution / Spatial resolution / Acuity measurement / Color target / 視力 / 空間的分解能 / 時間的分解能 / 第1種視覚的異常 / 空間加重 / 反対色性 / スネレン・チャ-ト / 等輝度条件 / 低飽和度 / 動態視力 / 受容野の大きさ |
|---|
| Research Abstract |
The first achievement of this investigation was a development of a visual acuity test based on the new technology of micro-computers, though its basic principle was not different from the traditional opto-chart test techniques. This relates to the outcome of the first year investigation in which the variables were 'hues' of the target stimuli and their contrast from the background. Although the results were not particularly new, through this study the possibility of acuity measurement and data analysis by means of computers in the clinical situations was proved. The targets could be further developed to have higher sophistication and exactness. The second achievement of this investigation was the uncovering of processes of the visual system that underlie visual acuity. This was realized by clarifying tha factors that affect both the temporal and spatial resolutions of the visual system. Admittedly this may not lead immediately to the improvement of tests for clinical uses but would make possible separation of those extraneous factors that affect visual acuity. The most notable factors discovered in the present study were the factors of saturation when colored targets were used, and the spatial factors that affect temporal resolution. If these factors are taken into consideration, we could develop more meaningful acuity measurement techniques.
|
