Visual Search against Uncomfortable Noise Patterns

Accommodation to uncomfortable patterns.

Grating patterns can cause discomfort and perceptual distortions. Individuals who experience discomfort and are susceptible to these distortions generally show weaker accommodation than those who are less susceptible. We measured the accommodative response to grating patterns known to differ in the discomfort they evoke because of differences in their colour, motion, or spatial frequency. The p...

Visual Search in Chest Radiology: Definition of Reference Anatomy for Analysing Visual Search Patterns

The role of eye movements in medical image understanding has been extensively studied. To assess the visual search behaviour of observers in examining images from different patients, it is necessary to account for patient-specific morphological variations, such that fixations related to specific feature landmarks are co-registered. This paper proposes a framework for analysing the spatial dynam...

Orientation anisotropies in visual search revealed by noise.

The human visual system is remarkably adept at finding objects of interest in cluttered visual environments, a task termed visual search. Because the human eye is highly foveated, it accomplishes this by making many discrete fixations linked by rapid eye movements called saccades. In such naturalistic tasks, we know very little about how the brain selects saccadic targets (the fixation loci). I...

Detection of visual patterns disturbed by noise: An exploratory study

Uncomfortable Effects of Quinine

Sir,?With reference to the evil consequences of quinine [due to fancies of certain patients] sometimes complained of by delicate males as well as females, I can bear testimony to what Dr. P. Cullen, Civil Surgeon, Khandwa, has said in the October No. of your journal. Besides many other cases, I pai'ticularly observed a lady relation of mine who could never take quinine under its proper name wit...