Self-initiated action rescues visual targets from backwards masking

Area of Science:

• Cognitive psychology
• Neuroscience
• Visual perception

Background:

• Visual masking is a phenomenon where a visual target becomes difficult to perceive when followed by a mask stimulus.
• Self-initiated actions can influence sensory processing, often leading to sensory attenuation.
• Temporal binding, an anticipatory effect, is also associated with self-initiated actions.

Purpose of the Study:

• To investigate whether self-initiated action can overcome visual masking.
• To determine if self-initiated action enhances or dampens the perception of masked visual targets.
• To explore the feasibility of conducting visual masking experiments online via crowd-sourcing.

Main Methods:

• Participants performed a visual masking task where the target-mask sequence onset was either self-initiated or externally triggered.
• Accuracy in identifying the visual target was measured in both conditions.
• An online crowd-sourcing platform was utilized to deliver the visual masking paradigm.

Main Results:

• Participants were significantly more accurate in detecting the visual target when it followed a self-initiated action compared to an externally triggered event.
• Self-initiated action promoted the perception of the visual target, counteracting the masking effect.
• The observed effect could not be attributed to temporal binding.

Conclusions:

• Self-initiated action can enhance visual perception, rescuing targets from backward masking.
• This finding challenges the typical notion of sensory attenuation following self-initiated actions in this context.
• Online crowd-sourcing is a viable method for conducting visual masking experiments.