Unknown

Dataset Information

0

The spatial characteristics of plaid-form-selective mechanisms.


ABSTRACT: Rather little is known about the mechanisms that combine the outputs of orientation- and spatial frequency-selective channels. These can be studied by measuring the selective adaptation to compound stimuli over and above that expected from adaptation to the components alone (Peirce & Taylor, 2006). Here we investigated the contrast- and spatial phase-dependency of such mechanisms. A plaid was adapted in one visual hemi-field, while its constituent gratings were simultaneously adapted in the other hemi-field. Plaid-selective adaptation was most apparent with high-contrast probes, whereas adaptation to the component grating stimuli dominated at low contrasts. The mechanisms underlying this plaid-selective adaptation also appear to be insensitive to the spatial phase of the probes relative to the adaptor, whereas we find a clear phase-dependency for suprathreshold contrast adaptation to grating stimuli. These findings suggest that the visual system is equipped with mechanisms that conduct a global analysis of the plaid pattern, which are likely derived from the non-linear outputs of V1 complex cells.

SUBMITTER: McGovern DP 

PROVIDER: S-EPMC2877803 | biostudies-literature | 2010 Apr

REPOSITORIES: biostudies-literature

altmetric image

Publications

The spatial characteristics of plaid-form-selective mechanisms.

McGovern David P DP   Peirce Jonathan W JW  

Vision research 20100201 8


Rather little is known about the mechanisms that combine the outputs of orientation- and spatial frequency-selective channels. These can be studied by measuring the selective adaptation to compound stimuli over and above that expected from adaptation to the components alone (Peirce & Taylor, 2006). Here we investigated the contrast- and spatial phase-dependency of such mechanisms. A plaid was adapted in one visual hemi-field, while its constituent gratings were simultaneously adapted in the othe  ...[more]

Similar Datasets

| S-EPMC3465779 | biostudies-literature
| S-EPMC5072603 | biostudies-literature
| S-EPMC3958697 | biostudies-literature
| S-EPMC2882822 | biostudies-literature
| S-EPMC3595136 | biostudies-literature
2024-10-16 | GSE248608 | GEO
| S-EPMC5056559 | biostudies-literature
| S-EPMC5548794 | biostudies-literature
| S-EPMC8280319 | biostudies-literature
| S-EPMC6077877 | biostudies-literature