English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

A number of studies have investigated whether human visual performance can be related to the general form of the amplitude spectra (i.e., 1/f(alpha)) of natural scenes. Here, it is argued that there are some discrepancies in the data between some of those studies and that one possible explanation for the discrepancies may be related to differences in methodology (e.g., stimuli presented to the fovea as opposed to the parafovea). We sought to resolve some of the discrepancies with two psychophysical paradigms involving alpha discrimination with visual noise and natural scene image patches presented to the fovea or parafovea. Fovea-parafovea threshold differences were apparent for stimuli possessing alpha values &lt; 1.0, with the parafovea typically showing highest thresholds for reference alpha values in the 0.74-0.85 range. Both fovea and parafovea thresholds were lowest in the 1.2-1.4 range. In addition, we conducted a local amplitude distribution analysis (i.e., assessed local alpha) with a large set of high-resolution natural scene imagery and found that the results of that analysis provided a better account of the alpha discrimination thresholds for stimuli presented to the fovea as opposed to the parafovea.

Discrimination of amplitude spectrum slope in the fovea and parafovea and the local amplitude distributions of natural scene imagery