TEST-THRESHOLD LUMINANCE UNDER VARIOUS LUMINANCE AND AREA CONDITIONS OF A RING-SHAPED INDUCING FIELD
MIOKO TAKAHASHI, YASUKO UEMURA
著者情報
-
MIOKO TAKAHASHI
University of Tokyo
-
YASUKO UEMURA
University of Tokyo
ジャーナル
フリー
1967 年 9 巻 4 号 p. 199-204
詳細
- Published: 1967 Received: 1967/12/19 Available on J-STAGE: 2009/02/24 Accepted: - Advance online publication: - Revised: -
-
訂正情報
訂正日: 2009/02/24 訂正理由: - 訂正箇所: 論文抄録 訂正内容: Wrong : It has been shown by Tanaka et al. (1967) that the foveal luminance threshold of a test patch surrounded by a contiguous annular inducing field shows decrement and increment under various combination of luminance and area of the inducing field. The present study was an attempt to examine whether the same effect exists when there is some separation between the test and inducing fields. The test spot subtending 12.27' in diameter was presented at the center of the black field surrounded by a ring-shaped inducing field whose inner diameter was 36' in visual angle. The results of 2 Ss were as follows. (1) As the inducing luminance increases from -2.5 to 0.5 log mL, the threshold luminance once decreases below the control level (the one measured without IF), and then gradually increases. (2) Maximum enhancement point where the minimum value of the test threshold appears, tends to move toward the lower values along the inducing luminance axis as the inducing area increases. (3) When the inducing luminance is high, the threshold luminance increases as the inducing area increases. These results are in accordance with those previously reported by Tanaka et al., though the amount of inducing effect is smaller as compared with the previous one. This decrease in the amount of inducing effect will be partly ascribed to the separation between the test and inducing fields. When the inducing luminance is very low (-2.5 log mL orso) the test threshold luminance
訂正日: 2009/02/24 訂正理由: - 訂正箇所: PDFファイル 訂正内容: -
PDFをダウンロード (394K)
メタデータをダウンロード
RIS形式
BIB TEX形式
テキスト
メタデータのダウンロード方法
発行機関連絡先
(EndNote、Reference Manager、ProCite、RefWorksとの互換性あり)
(BibDesk、LaTeXとの互換性あり)
記事の1ページ目
