Making sense: Dopamine activates conscious self-monitoring through medial prefrontal cortex
Morten Joensson1, Kristine Rømer Thomsen, Lau M Andersen
1Center of Functionally Integrative Neuroscience, Aarhus University, 8000, Aarhus, Denmark; Department of Psychiatry, University of Oxford, OX37JX Oxford, United Kingdom.
Human Brain Mapping
|January 29, 2015
Summary
Dopamine administration enhanced conscious awareness and self-monitoring abilities. This suggests dopamine plays a key role in self-awareness and cognitive process monitoring, particularly in specific brain regions.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neurochemistry
Background:
- Meaningful experiences engage self-awareness networks involving dopamine.
- The medial prefrontal cortex is crucial for self-awareness.
- Dopamine may enhance self-awareness and metacognition.
Purpose of the Study:
- To investigate the effect of dopamine on self-awareness and metacognition.
- To explore dopamine's role in noetic and autonoetic metacognition.
- To correlate brain activity with dopamine's effects on self-awareness.
Main Methods:
- Oral administration of 100 mg dopamine.
- Assessing noetic metacognition in minimal self-awareness states.
- Evaluating autonoetic metacognition in extended self-awareness.
- Magnetoencephalography (MEG) to measure brain oscillations.
Main Results:
- Dopamine improved noetic metacognition.
- Dopamine enhanced memory retrieval accuracy for self-judgment (autonoetic metacognition).
- Increased oscillatory power in the medial prefrontal cortex was observed via MEG.
Conclusions:
- Dopamine administration can enhance conscious metacognition.
- Dopamine specifically benefits explicit self-awareness and autonoetic metacognition.
- Observed changes in medial prefrontal cortex activity explain dopamine's effects on self-awareness.
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