The effect of spatial attention on saccadic adaptation

Area of Science:

• Neuroscience
• Cognitive Psychology
• Visual Perception

Background:

• Eye movements, including voluntary saccades (VSs) and reactive saccades (RSs), are vital for visual perception.
• Saccadic adaptation allows for lifelong accuracy adjustments in eye movements.
• Spatial attention, which can be endogenous or exogenous, enhances visual processing but its relationship with saccadic adaptation remains unclear.

Purpose of the Study:

• To investigate the relationship between saccadic adaptation and spatial attention.
• To determine if spatial attention modulates saccadic adaptation processes.

Main Methods:

• Two experiments were conducted using modified double-step adaptation and attention-orienting paradigms.
• Experiment 1 examined exogenous attention's effect on RS adaptation using tactile cues.
• Experiment 2 investigated endogenous attention's effect on VS adaptation with tactile cueing.

Main Results:

• No direct evidence was found for spatial attention significantly affecting saccadic adaptation.
• Correlation analyses revealed positive associations between attention allocation toward saccade targets and saccadic adaptation rate/magnitude.
• Negative correlations were observed between attention directed away from the target and saccadic adaptation.

Conclusions:

• While direct modulation was not demonstrated, spatial attention appears to be indirectly linked to saccadic adaptation.
• The findings suggest that attention allocation influences the processes underlying saccadic adaptation.