Preparation of saccade sequences and eye programming affect endogenous covert attention

Area of Science:

• Cognitive Neuroscience
• Ophthalmology
• Psychology

Background:

• Endogenous attention can be divided between multiple saccade targets.
• Attentional resources typically decrease for subsequent saccades in a sequence.
• The role of eye programming in sequential saccade attention remains unclear.

Purpose of the Study:

• Investigate how eye-movement preparation and eye programming influence endogenous attention during sequential saccades.
• Determine if eye programming can mitigate attentional resource decline in sequential saccades.
• Examine the contribution of eye programming to the meridian effect in attention.

Main Methods:

• Utilized a double-task paradigm across two experiments.
• Assessed attentional selection in relation to sequential saccade preparation.
• Measured performance in both saccadic and target discrimination tasks.

Main Results:

• Confirmed a link between sequential saccade preparation and attentional selection.
• Demonstrated that eye programming can prevent attentional resource deterioration for the second saccade.
• Observed the meridian effect in both saccadic and target discrimination tasks.

Conclusions:

• Eye programming plays a crucial role in maintaining endogenous attention during sequential saccades.
• The findings support the Premotor Theory of Attention regarding the integration of eye movements and attention.
• Eye programming can overcome the typical decline in attentional resources for later saccades in a sequence.