Brain activation patterns during memory of cognitive agency

Area of Science:

• Neuroscience
• Cognitive Psychology
• Memory Research

Background:

• Agency, the sense of being the author of one's actions, thoughts, or feelings, is crucial for self-awareness.
• The neural underpinnings of implicit memory for cognitive agency remain underexplored.
• Understanding the sense of cognitive agency is vital for comprehending self-referential processing and memory formation.

Purpose of the Study:

• To investigate brain activation patterns associated with the implicit memory of cognitive agency.
• To differentiate neural correlates of remembering self-generated versus externally-presented cognitive events.
• To explore the role of specific brain regions in the retrieval of the sense of agency.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was employed to measure brain activity.
• A sentence completion paradigm with emotionally neutral and semantically constrained content was utilized.
• Participants completed sentences to generate words, which were then compared to experimenter-presented words.

Main Results:

• Accurate memory for the source of self-generated words, compared to externally-presented words, activated the dorsal medial prefrontal cortex (mPFC) bilaterally.
• This finding supports the role of the dorsal mPFC in self-referential processing.
• The study identified the dorsal mPFC's involvement in memory retrieval related to the sense of cognitive agency.

Conclusions:

• The dorsal medial prefrontal cortex (mPFC) plays a significant role in the implicit memory of cognitive agency.
• These findings extend the known functions of the mPFC to include memory and the retrieval of self-agency.
• The research highlights the importance of the mPFC in distinguishing self-generated from externally-influenced cognitive events.