Effect of frontal lobe lesions on the recollection and familiarity components of recognition memory.
Single-process theories assume that familiarity is the sole influence on recognition memory with decisions being made as a continuous process. Dual-process theories claim that recognition involves both recollection and familiarity processes with recollection as a threshold process. Although, the frontal lobes of the brain play an important role in recognition memory, few studies have examined the effect of frontal lobe lesions on recollection and familiarity. In the current study, the nonverbal recognition memory of 24 patients with focal frontal lesions due to tumour or stroke was examined. Recollection and familiarity were estimated using the receiver operating characteristic (ROC) method. A secondary analysis was also conducted using standard signal detection theory methodology. Both analyses led to similar conclusions where only the familiarity component of recognition memory was impaired in frontal patients compared to healthy controls whilst the recollection-type (or variance ratio) processes remained intact.
MacPherson
Sarah E
SE
Institute of Cognitive Neuroscience, University College London, London, UK. sarah.macpherson@ed.ac.uk
Bozzali
Marco
M
Cipolotti
Lisa
L
Dolan
Raymond J
RJ
Rees
Jeremy H
JH
Shallice
Tim
T
D000293:Adolescent; D000328:Adult; D001930:Brain Injuries / Q000473:pathology*; D016001:Confidence Intervals; D005260:Female; D005625:Frontal Lobe / Q000503:physiopathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D011939:Mental Recall / Q000502:physiology*; D008875:Middle Aged; D009483:Neuropsychological Tests; D012372:ROC Curve; D021641:Recognition, Psychology / Q000502:physiology*