A dynamic 1/f noise protocol to assess visual attention without biasing perceptual processing.

ABSTRACT: Psychophysical paradigms measure visual attention via localized test items to which observers must react or whose features have to be discriminated. These items, however, potentially interfere with the intended measurement, as they bias observers' spatial and temporal attention to their location and presentation time. Furthermore, visual sensitivity for conventional test items naturally decreases with retinal eccentricity, which prevents direct comparison of central and peripheral attention assessments. We developed a stimulus that overcomes these limitations. A brief oriented discrimination signal is seamlessly embedded into a continuously changing 1/f noise field, such that observers cannot anticipate potential test locations or times. Using our new protocol, we demonstrate that local or

SUBMITTER: Hanning NM 

PROVIDER: S-EPMC10439027 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature