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Conceptual and perceptual memory: retrieval orientations reflected in event-related potentials
Georg Stenberg1, Mikael Johansson, Ingmar Rosén
1Department of Psychology, School of Behavioural Sciences, Kristianstad University, SE-291 88 Kristianstad, Sweden. georg.stenberg@bet.hkr.se
Acta Psychologica
|January 13, 2006
Summary
Retrieval orientations, guiding memory search, leave distinct brain signatures on event-related potentials (ERPs). Perceptual and conceptual orientations differently impact ERPs, especially in memory tasks involving pictures and words.
Area of Science:
- Cognitive Neuroscience
- Psychology
Background:
- Memory retrieval involves mental sets influencing evidence search.
- Retrieval orientations may leave imprints on event-related potentials (ERPs).
Purpose of the Study:
- Characterize perceptual and conceptual retrieval orientations.
- Examine their impact on ERPs during a recognition task.
- Investigate dissociation of picture-word mirror effect.
Main Methods:
- Recognition task with pictures and words, varying study-test format.
- Between-subjects manipulation: Exclusion vs. Inclusion groups.
- Behavioral experiment and event-related potential (ERP) experiment.
Main Results:
- Exclusion instructions led to perceptual orientation; Inclusion to conceptual.
- Perceptual orientation showed more positive-going ERP amplitudes.
- ERP differences were larger for pictures than words.
- Exclusion group lacked cross-format ERP effects despite behavioral recognition.
Conclusions:
- Perceptual and conceptual retrieval orientations create distinct ERP signatures.
- ERPs old-new effects are primarily linked to voluntary memory processes.
- Involuntary memory can influence reaction times independently of ERPs.