Transsaccadic perception of translating objects: effects of landmark objects and visual field position

Area of Science:

• Visual perception
• Human psychophysics
• Oculomotor research

Background:

• Previous research indicated higher sensitivity to intrasaccadic displacements for moving objects compared to stationary ones.
• The role of relative motion encoding in intrasaccadic displacement detection remained unclear.

Purpose of the Study:

• To investigate the impact of relative motion on intrasaccadic displacement detection.
• To examine visual field effects on the sensitivity to intrasaccadic displacements.

Main Methods:

• Experiments compared intrasaccadic displacement detection for objects in relative motion versus isolated motion.
• Sensitivity for stationary and translating objects was assessed across upper and lower visual fields.

Main Results:

• Relative motion did not facilitate the detection of intrasaccadic displacements.
• Performance was consistently better for objects presented in the lower visual field compared to the upper visual field.
• A lower visual field advantage was observed for both stationary and translating objects.

Conclusions:

• Relative motion does not enhance intrasaccadic displacement sensitivity.
• The lower visual field offers superior performance for detecting intrasaccadic displacements, regardless of object motion.
• Translating objects show superior intrasaccadic displacement sensitivity across visual fields, confirming prior findings.