The coordinate frame of pop-out learning.
Saccades are ubiquitous in natural vision. One way to generate a coherent representation of a scene across saccades is to produce an extra-retinal coordinate frame (such as a head-based representation). We investigate this issue by behavioral means: Participants learned to detect a 3D-pop-out target in a fixed position. Next, target was relocated in one coordinate frame while maintaining it fixed in the others. Performance was severely affected only when the change in target position occurred in a retinotopic coordinate frame. This further suggests that perceptual learning occurs in retinotopic regions having receptive fields restricted within a hemifield.
McKyton
Ayelet
A
Neurobiology Department, Life Science Institute, Hebrew University, Jerusalem, Israel. ayelet.mckyton@mail.huji.ac.il
Zohary
Ehud
E
D000293:Adolescent; D000328:Adult; D005364:Field Dependence-Independence; D006801:Humans; D007858:Learning / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D012438:Saccades / Q000502:physiology; D012684:Sensory Thresholds / Q000502:physiology