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Reflective and reflexive action control in patients with frontal brain lesions
1Institut für Pädagogische Psychologie und Empirische Pädagogik, Universität München, Germany. lengfeld@mip.paed.uni-muenchen.de
Neuropsychology
|February 24, 2001
Summary
Frontal lobe damage impairs conscious goal selection but not automatic action initiation. This suggests distinct brain mechanisms for reflective versus reflexive action control, impacting decision-making and task performance.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Behavioral Science
Background:
- The model of action phases distinguishes between reflective and reflexive action control.
- Frontal lobe lesions are known to affect executive functions and cognitive control.
Purpose of the Study:
- To investigate the impact of frontal lesions on reflective and reflexive action control.
- To examine the dissociation between conscious and automatic action control mechanisms.
Main Methods:
- Study 1 assessed reflective action control (goal selection) in frontal lesion patients, nonfrontal lesion patients, and students.
- Study 2 assessed reflexive action control (automatic initiation via implementation intentions) in the same groups.
- The Tower of Hanoi (TOH) task was used to measure executive function performance.
Main Results:
- Patients with frontal lesions showed impaired deliberation in goal selection (Study 1).
- All participants improved response times by forming implementation intentions (Study 2).
- Lesion patients with poorer TOH performance performed worse in Study 1 but better in Study 2 compared to controls.
Conclusions:
- Findings support a functional dissociation between conscious, reflective action control and automatic, reflexive action control.
- Frontal lobe regions are crucial for reflective action control, while reflexive control may rely on different neural substrates.
- This dissociation has implications for understanding cognitive deficits following brain injury.