McLachlan, E;
Rai, S;
Al-Shihabi, A;
Huntley, J;
Burgess, N;
Howard, R;
Reeves, S;
(2020)
Neuroimaging correlates of false memory in 'Alzheimer's disease: A preliminary systematic review.
Psychiatry Research: Neuroimaging
, 296
, Article 111021. 10.1016/j.pscychresns.2019.111021.
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Abstract
Alzheimer's disease (AD) is characterised by episodic memory impairment, but people also experience memory distortions, including false memories, which can impact on safety and reduce functioning. Understanding the neural networks that underpin false memories could help to predict the need for intervention and guide development of cognitive strategies to reduce memory errors. However, there is a relative absence of research into how the neuropathology of AD contributes to false memory generation. This paper systematically reviews the methodology and outcomes of studies investigating the neuroimaging correlates of false memory in AD. Four studies using structural imaging and three studies using functional imaging were identified. Studies were heterogenous in methodology and received mostly ‘weak’ quality assessment ratings. Combined, and consistent with neuroimaging findings in non-AD populations, results from identified studies provide preliminary support for the hypothesis that medial temporal lobe and prefrontal cortex dysfunction may lead to generation of false memories in AD. However, the small number of studies and significant heterogeneity within them means further study is necessary to assess replicability of results.
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