title: Memory enhancement in healthy older adults using a brain plasticity-based training program: a randomized, controlled study.
abstract: Normal aging is associated with progressive functional losses in perception, cognition, and memory. Although the root causes of age-related cognitive decline are incompletely understood, psychophysical and neuropsychological evidence suggests that a significant contribution stems from poorer signal-to-noise conditions and down-regulated neuromodulatory system function in older brains. Because the brain retains a lifelong capacity for plasticity and adaptive reorganization, dimensions of negative reorganization should be at least partially reversible through the use of an appropriately designed training program. We report here results from such a training program targeting age-related cognitive decline. Data from a randomized, controlled trial using standardized measures of neuropsychological function as outcomes are presented. Significant improvements in assessments directly related to the training tasks and significant generalization of improvements to nonrelated standardized neuropsychological measures of memory (effect size of 0.25) were documented in the group using the training program. Memory enhancement appeared to be sustained after a 3-month no-contact follow-up period. Matched active control and no-contact control groups showed no significant change in memory function after training or at the 3-month follow-up. This study demonstrates that intensive, plasticity-engaging training can result in an enhancement of cognitive function in normal mature adults.
authors.affiliation: Posit Science Corporation, 225 Bush Street, San Francisco, CA 94104, USA. henry.mahncke@positscience.com
authors.forename: Henry W
authors.initials: HW
authors.lastname: Mahncke
authors.forename: Bonnie B
authors.initials: BB
authors.lastname: Connor
authors.forename: Jed
authors.initials: J
authors.lastname: Appelman
authors.forename: Omar N
authors.initials: ON
authors.lastname: Ahsanuddin
authors.forename: Joseph L
authors.initials: JL
authors.lastname: Hardy
authors.forename: Richard A
authors.initials: RA
authors.lastname: Wood
authors.forename: Nicholas M
authors.initials: NM
authors.lastname: Joyce
authors.forename: Tania
authors.initials: T
authors.lastname: Boniske
authors.forename: Sharona M
authors.initials: SM
authors.lastname: Atkins
authors.forename: Michael M
authors.initials: MM
authors.lastname: Merzenich
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D003072:Cognition Disorders / Q000517:prevention & control; D004493:Education; D006801:Humans; D008568:Memory / Q000502:physiology*; D008875:Middle Aged; D009473:Neuronal Plasticity / Q000502:physiology*; D009483:Neuropsychological Tests; D012107:Research Design