Journal
CORTEX
Volume 113, Issue -, Pages 191-209Publisher
ELSEVIER MASSON, CORPORATION OFFICE
DOI: 10.1016/j.cortex.2018.11.021
Keywords
Episodic memory; Recognition memory; Hippocampus; Parkinson's disease; Hippocampal subfields
Funding
- NIH, USA [P50 AG047366, P50 NS062684]
- Michael J. Fox Foundation for Parkinson's Research, USA
- Seiger Family Foundation, USA
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Parkinson's disease is a progressive neurodegenerative disorder of aging. The hallmark pathophysiology includes the development of neuronal Lewy bodies in the substantia nigra of the midbrain with subsequent loss of dopaminergic neurons. These neuronal losses lead to the characteristic motor symptoms of bradykinesia, rigidity, and rest tremor. In addition to these cardinal motor symptoms patients with PD experience a wide range of non-motor symptoms, the most important being cognitive impairments that in many circumstances lead to dementia. People with PD experience a wide range of cognitive impairments; in this review we will focus on memory impairment in PD and specifically episodic memory, which are memories of day-to-day events of life. Importantly, these memory impairments severely impact the lives of patients and caregivers alike. Traditionally episodic memory is considered to be markedly dependent on the hippo campus; therefore, it is important to understand the exact nature of PD episodic memory deficits in relation to hippocampal function and dysfunction. In this review, we discuss an aspect of episodic memory called recognition memory and its subcomponents called recollection and familiarity. Recognition memory is believed to be impaired in PD; thus, we discuss what aspects of the hippocampus are expected to be deficient in function as they relate to these recognition memory impairments. In addition to the hippocampus as a whole, we will discuss the role of hippocampal subfields in recognition memory impairments. (C) 2018 Elsevier Ltd. All rights reserved.
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