Working memory can compare two visual items without accessing visual consciousness

Area of Science:

• Cognitive Psychology
• Neuroscience
• Consciousness Studies

Background:

• Unconscious visual information can access working memory.
• The role of unconscious processes in central executive function remains unclear.

Purpose of the Study:

• To investigate whether the central executive, a key component of cognitive control, can be activated unconsciously.
• To determine the threshold for subjective awareness in relation to central executive activation.

Main Methods:

• A delayed match-to-sample task was employed.
• Participants compared the locations of visual targets, some of which were masked.
• A visual masking paradigm was used to manipulate target visibility.

Main Results:

• Participants performed above chance when comparing two unconscious targets.
• Performance dropped to chance level when trials lacking subjective awareness were excluded.
• This indicates a reliance on conscious experience for sustained performance.

Conclusions:

• The central executive can be activated by stimulus signals below the threshold of subjective report.
• Conscious awareness plays a critical role in the reliable functioning of the central executive.
• Findings contribute to understanding the interplay between unconscious processing and executive functions.