The effect of attentional spread on Modulation Transfer Function.

Accession number;99A0285286
Title;The effect of attentional spread on Modulation Transfer Function.
Author; GOTO MAKOTO (Fujitsu Lab. Ltd.)
Journal Title;IEIC Technical Report (Institute of Electronics, Information and Communication Engineers)
Journal Code:S0532B
ISSN:0913-5685
VOL.98;NO.504(HIP98 39-51);PAGE.23-30(1999)
Figure&Table&Reference;FIG.10, REF.8
Pub. Country;Japan
Language;Japanese
Abstract;We present a model which accounts for both the Non-uniformity of visual acuity and the relation-ship between attentional spread and apatial resolution. Also, to verify the model, we made a psychophysical experiment in which two tasks took place simultaneously to investigate the effect of attentional spread on Modulation Transfer Function(MTF). The primary task required subjects to detect dots near two border stimuli, and the secondary task required the subjects to detect a Gabor patch between them. The MTF of narrow-condition was found to be shifted towards higher resolutional area from the MTF of broad-condition. This result gave a qualitative proof of our model. (author abst.)