Trial-by-trial adjustments in control triggered by incidentally encoded semantic cues

Area of Science:

• Cognitive psychology
• Neuroscience
• Human behavior

Background:

• Cognitive control enables adaptation to changing environmental demands.
• Contextual cues, including perceptual and goal-driven factors, modulate cognitive control.
• Previous research highlights low-level perceptual cues influencing cognitive control.

Purpose of the Study:

• To investigate whether high-level semantic categories can also facilitate contextual control.
• To determine if stimulus features beyond low-level perception engage cognitive control mechanisms.
• To assess the impact of semantic category properties on cognitive control.

Main Methods:

• Utilized a word-word interference task.
• Manipulated the semantic category of stimuli presented.
• Varied the proportion of incongruent stimuli within specific semantic categories (75% vs. 25%).

Main Results:

• Participants showed a larger Flanker effect for semantic categories with a higher proportion of incongruent items (75%).
• This indicates that semantic category information influences context-specific cognitive control.
• Both low-level perceptual features and high-level semantic features engage bottom-up cognitive control.

Conclusions:

• Cognitive control is sensitive to both low-level perceptual and high-level semantic contextual cues.
• High-level stimulus features, such as semantic category, can guide cognitive control.
• Findings have implications for refining current models of cognitive control mechanisms.