Double dissociation of short-term and long-term memory for nonverbal material in Parkinson's disease and global amnesia. A further analysis. Sullivan, E. V. & Sagar, H. J. Brain, 114 ( Pt 2):893–906, 1991.
abstract   bibtex   
The traditional concept of memory disorder is deficiency of the long-term (LTM) but not short-term (STM) component of memory. STM impairment with LTM sparing is seldom reported. The present study investigated STM and LTM for nonverbal material in three neurological conditions associated with memory impairment: bilateral medial temporal lobe lesions (patient H.M.), Parkinson's disease (PD) and Alzheimer's disease (AD). Subjects received 3 tests of nonverbal memory: forward block span, immediate and delayed recall of the Wechsler Memory Scale drawings, and immediate and delayed recognition of abstract designs. Compared with the normal control group, the patient groups displayed different patterns of sparing and loss of the two components of memory: in PD, only STM was impaired; in medial temporal lobe amnesia, only LTM was impaired; and in AD, STM and LTM were both impaired. The contrasting patterns of sparing and loss of STM and LTM in PD and global amnesia were present for both recognition and recall. These results provide evidence that STM and LTM are dissociable processes and are served by separate neurological systems: STM depends upon intact corticostriatal systems, whereas LTM depends upon intact medial temporal lobe systems.
@Article{Sullivan1991,
  author      = {Sullivan, E. V. and Sagar, H. J.},
  journal     = {Brain},
  title       = {Double dissociation of short-term and long-term memory for nonverbal material in Parkinson's disease and global amnesia. A further analysis.},
  year        = {1991},
  pages       = {893--906},
  volume      = {114 ( Pt 2)},
  abstract    = {The traditional concept of memory disorder is deficiency of the long-term
	(LTM) but not short-term (STM) component of memory. STM impairment
	with LTM sparing is seldom reported. The present study investigated
	STM and LTM for nonverbal material in three neurological conditions
	associated with memory impairment: bilateral medial temporal lobe
	lesions (patient H.M.), Parkinson's disease (PD) and Alzheimer's
	disease (AD). Subjects received 3 tests of nonverbal memory: forward
	block span, immediate and delayed recall of the Wechsler Memory Scale
	drawings, and immediate and delayed recognition of abstract designs.
	Compared with the normal control group, the patient groups displayed
	different patterns of sparing and loss of the two components of memory:
	in PD, only STM was impaired; in medial temporal lobe amnesia, only
	LTM was impaired; and in AD, STM and LTM were both impaired. The
	contrasting patterns of sparing and loss of STM and LTM in PD and
	global amnesia were present for both recognition and recall. These
	results provide evidence that STM and LTM are dissociable processes
	and are served by separate neurological systems: STM depends upon
	intact corticostriatal systems, whereas LTM depends upon intact medial
	temporal lobe systems.},
  institution = {Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge.},
  keywords    = {Aged; Amnesia, psychology; Analysis of Variance; Humans; Memory; Memory Disorders, etiology; Memory, Short-Term; Middle Aged; Parkinson Disease, psychology; Reference Values; Wechsler Scales},
  language    = {eng},
  medline-pst = {ppublish},
  pmid        = {2043956},
  timestamp   = {2012.06.11},
}

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