Electrophysiological brain activity and memory source monitoring.
To investigate brain mechanisms involved in identifying the origin of memories, event-related potentials (ERPs) were recorded as participants discriminated previously presented (old) from new items or identified their earlier source (picture, word, or new). Differences in ERPs between old-new recognition and source identification, were focused at frontal sites. For source identification, prominent negative deflections at occipital or frontal sites occurred depending on encoding task. These results support a model in which memory attributes are distributed neocortically and the frontal lobes are critical for source monitoring.
Johnson
M K
MK
Department of Psychology, Princeton University, NJ 08544-1010, USA.
Kounios
J
J
Nolde
S F
SF
D000328:Adult; D001921:Brain / Q000502:physiology*; D003071:Cognition / Q000502:physiology; D004569:Electroencephalography; D004594:Electrophysiology; D005071:Evoked Potentials / Q000502:physiology; D005260:Female; D005625:Frontal Lobe / Q000502:physiology; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology*