Journal of the International Neuropsychological Society



A comparison of episodic memory deficits in neuropathologically-confirmed Dementia with Lewy bodies and Alzheimer's disease


JOANNE M.  HAMILTON  a1 c1 , DAVID P.  SALMON  a1 , DOUGLAS  GALASKO  a1 a5 , DEAN C.  DELIS  a2 a6 , LAWRENCE A.  HANSEN  a1 a3 , ELIEZER  MASLIAH  a1 a3 , RONALD G.  THOMAS  a1 a4 and LEON J.  THAL  a1 a5
a1 Department of Neurosciences, University of California, San Diego, La Jolla, California
a2 Department of Psychiatry, University of California, San Diego, La Jolla, California
a3 Department of Pathology, University of California, San Diego, La Jolla, California
a4 Department of Family and Preventive Medicine, University of California, San Diego, La Jolla, California
a5 Neurology Service, Veterans Affairs San Diego Healthcare System, La Jolla, California
a6 Psychology Service, Veterans Affairs San Diego Healthcare System, La Jolla, California

Article author query
hamilton jm   [PubMed][Google Scholar] 
salmon dp   [PubMed][Google Scholar] 
galasko d   [PubMed][Google Scholar] 
delis dc   [PubMed][Google Scholar] 
hansen la   [PubMed][Google Scholar] 
masliah e   [PubMed][Google Scholar] 
thomas rg   [PubMed][Google Scholar] 
thal lj   [PubMed][Google Scholar] 

Abstract

Little is known about possible differences in the memory deficits that occur in Dementia with Lewy bodies (DLB) and Alzheimer's disease (AD). We compared 24 autopsy-confirmed DLB and 24 age-, education-, and MMSE-matched autopsy-confirmed AD patients on the California Verbal Learning Test (CVLT) and the Wechsler Memory Scale-Revised Logical Memory subtest. The DLB and AD groups were similarly impaired on CVLT Total Learning (Trials 1–5) and Long Delayed Free Recall, but the DLB group demonstrated relative improvement in Savings scores and on recognition testing compared to the AD group. Likewise, the patient groups were equally impaired on Logical Memory immediate and delayed recall, but the DLB group's Saving scores were significantly better than those of the AD patients. These results indicate that while both DLB and AD patients exhibit significant memory impairment, the ability to consolidate information may be less severely impaired in DLB patients than in AD patients. (JINS, 2004, 10, 689–697.)

(Received June 18 2003)
(Revised November 14 2003)
(Accepted February 24 2004)


Key Words: Dementia with Lewy bodies; Alzheimer's disease; Memory.

Correspondence:
c1 Joanne M. Hamilton, Ph.D., Alzheimer's Disease Research Center, 9500 Gilman Drive, MC 0948, La Jolla, CA 92093-0948. E-mail: jmhamilton@ucsd.edu