Visual lobe shape characteristics of experienced industrial inspectors and inexperienced subjects

Abstract

This article reports research on visual lobe shape differences between experienced industrial inspectors and inexperienced students and the effects of years of inspection experience on lobe-shape characteristics. Comparison of the visual lobes of students and inspectors showed that lobe roundness of the inspectors was higher than that of the students. Also, marked improvement in lobe roundness and regularity for inspectors was evident in those inspectors who had relatively long experience in inspection work, indicating that daily inspection practice did not seem to be an effective way of improving lobe-shape characteristics. The increased lobe roundness level did not change, however, even when the inspectors had not performed an inspection job for a long period of time. This finding suggests that the improved lobe-roundness level could be maintained even without any follow-up inspection practice. It seems that intensive lobe training rather than inspection practice may be required to improve lobeshape characteristics in a short time. No relationship was found between lobe-shape parameters and the ranked inspection performance of the inspectors, which indicated that, for the inspectors, better search performance may be related more to their better decision making rather than to their higher lobe-roundness level or inspection speed. C 2010 Wiley Periodicals, Inc.

Effect of display polarity and luminance contrast on visual lobe shape characteristics

“…Recent research on lobe shape has revealed that lobe training with a difficult target can produce a noticeable improvement in lobe area and roundness, and had a significant effect on visual search performance Chiu 2009, Lee and). Interestingly, lobe roundness for inspectors with experience in microscope-inspection tasks was higher than that for students (Chan and Chiu 2010).…”

Display Movement Velocity and Dynamic Visual Search Performance

“…The probability of the target being detected if it lands in the area of visual lobe P 0 can be affected by both physiological factors as well as attention allocation (Chan & Chiu, ; Chan & Tang, ; Koller, Drury, & Schwaninger, ; McCarley, ). In this experiment, because the target and background elements had very similar shapes, identical colors, and moved smoothly in the same direction and at the same velocity, the asymmetric phenomenon in dynamic visual search does not exist (Araujo, Kowler, & Pavel, ).…”

Effects of magnification modes and location cues on visual inspection performance

“…Twenty-eight engineering undergraduate students (24 males and 4 females) of City University of Hong Kong with ages from 19 to 25 (median = 21) years participated in the experiment with course credit. All of them had binocular near acuity of at least nine (20/22 Snellen notation) on the Bausch and Lomb Orthorator and had previously participated in an experiment measuring visual lobe area and shape characteristics [ 18 , 19 ]. The experiment was approved by the City University of Hong Kong’s Human Subjects Ethics Sub-Committee, and all subjects gave written informed consent before participation.…”