Saccade target selection in visual search: accuracy improves when more distractors are present

Area of Science:

• Visual perception
• Cognitive neuroscience
• Ophthalmology

Background:

• Gaze control accuracy is crucial for efficient visual search.
• Distractor elements can significantly impact search performance and eye movement precision.

Purpose of the Study:

• To investigate the accuracy of gaze control in visual search tasks.
• To understand how distractors influence saccade accuracy and latency.

Main Methods:

• Four experiments utilized search displays with Gabor patches.
• Manipulated distractor proximity, number, and spatial configuration.
• Measured saccade accuracy and latency in response to visual search stimuli.

Main Results:

• A closer distractor between the fixation point and target reduced first saccade accuracy.
• Increasing display items in a ring configuration improved saccade accuracy.
• First saccade latency increased with the ring configuration and covaried with accuracy.

Conclusions:

• Distractors can prolong fixation duration, allowing for enhanced visual processing.
• This extended processing time leads to more accurate eye movements in visual search.