▪ Abstract The acuity of compound eyes is determined by interommatidial angles, optical
quality, and rhabdom dimensions. It is also affected by light levels and speed of movement …

Visual stimuli contain a limited amount of information that could potentially be used to
perform a given visual task. At successive stages of visual processing, some of this …

The discrimination between two spike trains is a fundamental problem for both
experimentalists and the nervous system itself. We introduce a measure for the distance …

We developed and tested a powerful method for identifying and characterizing the effect of
attention on performance in visual tasks as due to signal enhancement, distractor exclusion …

An ideal observer is a hypothetical device that performs optimally in a perceptual task given
the available information. The theory of ideal observers has proven to be a powerful and …

Seeking to understand how people recognize objects, we have examined how they identify
letters. We expected this 26-way classification of familiar forms to challenge the popular …

Most theories of visual search emphasize issues of limited versus unlimited capacity and
serial versus parallel processing. In the present article, we suggest a broader framework …

We present a review of perceptual image quality metrics and their application to still image
compression. The review describes how image quality metrics can be used to guide an …

In 1946 and 1948, three very important papers by Albert Rose [J. Soc. Motion Pict. Eng. 47,
273 (1946); J. Opt. Soc. Am. 38, 196 (1948); MartonL., ed.(Academic, New York, 1948)] were …

Perceptual discrimination improves with practice. This 'perceptual learning'is often specific to
the stimuli presented during training,,,,, indicating that practice may alter the response …