Evidence map›Paper›PMID 26689342›Full record

ArticleThe Clinical neuropsychologist2015

Memory Similarities Between Essential Tremor and Parkinson's Disease: A Final Common Pathway?

Jacob A Lafo, Jacob D Jones, Michael S Okun, Russell M Bauer, Catherine C Price, Dawn Bowers

Abstract read
In one paragraph

Article in The Clinical neuropsychologist, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Clinical Features of Essential Tremor and its Impact on Quality of Life in Japan.Tremor and other hyperkinetic movements (New York, N.Y.) · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Essential tremor and cognitive impairment: who, how, and why.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Review
  12. Article
  13. Article
  14. Review
  15. Symptom Dimensions of Depression and Apathy and Their Relationship With Cognition in Parkinson's Disease.Journal of the International Neuropsychological Society : JINS · 2018
    Article
  16. Mild Cognitive Impairment Subtypes in a Cohort of Elderly Essential Tremor Cases.Journal of the International Neuropsychological Society : JINS · 2017
    Article
  17. Article
  18. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Jacob A Lafoa Department of Clinical and Health Psychology, College of Public Health & Health Professions , University of Florida , Gainesville , FL , USA.
Jacob D Jonesa Department of Clinical and Health Psychology, College of Public Health & Health Professions , University of Florida , Gainesville , FL , USA.
Michael S Okunb Department of Neurology , University of Florida College of Medicine, University of Florida , Gainesville , FL , USA.
Russell M Bauera Department of Clinical and Health Psychology, College of Public Health & Health Professions , University of Florida , Gainesville , FL , USA.
Catherine C Pricea Department of Clinical and Health Psychology, College of Public Health & Health Professions , University of Florida , Gainesville , FL , USA.
Dawn Bowersb Department of Neurology , University of Florida College of Medicine, University of Florida , Gainesville , FL , USA.

Funding

Role of the Cortex and Cerebellum in Visually-Guided Motor BehaviorR01NS058487 · NINDS · UNIVERSITY OF ILLINOIS AT CHICAGO · PI JAFFEE, MICHAEL S., VAILLANCOURT, DAVID E · 2008 to 2025
$6.1M
Interdisciplinary Training in Movement Disorders and NeurorestorationT32NS082168 · NINDS · UNIVERSITY OF FLORIDA · PI Melissa Jo Armstrong, David E Vaillancourt · 2015 to 2026
$2.8M
White Matter Connectivity and PD Cognitive PhenotypesR01NS082386 · NINDS · UNIVERSITY OF FLORIDA · PI PRICE, CATHERINE E · 2013 to 2017
$2.3M
Neuroimaging Biomarkers for Post-Operative Cognitive Decline in Older AdultsR01NR014181 · NINR · UNIVERSITY OF FLORIDA · PI PRICE, CATHERINE E · 2012 to 2016
$2.3M
White Matter and Cognition in Parkinson's DiseaseK23NS060660 · NINDS · UNIVERSITY OF FLORIDA · PI PRICE, CATHERINE E · 2007 to 2011
$619k
Emotion Regulation, Executive Function, and Parkinson DiseaseR21NS079767 · NINDS · UNIVERSITY OF FLORIDA · PI BOWERS, DAWN · 2012 to 2013
$392k
NINDS NIH HHS K23 NS060660NINDS NIH HHS R01 NS058487NINDS NIH HHS R01 NS082386NINDS NIH HHS R21 NS079767NINDS NIH HHS R21-NS079767NINDS NIH HHS T32 NS082168NINDS NIH HHS T32-NS082168NINR NIH HHS R01 NR014181
6 · The paper itself

Abstract

objectiveA growing body of literature supports the view that essential tremor (ET) involves alteration of cerebellar-thalamo-cortical networks which can result in working memory and executive deficits. In this study, we tested the hypothesis that individuals with ET would exhibit worse performance on memory tasks requiring more intrinsic organization and structuring (i.e., word lists) relative to those with fewer 'executive' demands (i.e., stories), similar to that previously observed in individuals with Parkinson's disease (PD).

methodParticipants included a convenience sample of 68 ET patients and 68 idiopathic PD patients, retrospectively matched based on age, education, and sex. All patients underwent routine neuropsychological evaluation assessing recent memory, auditory attention/working memory, language, and executive function. Memory measures included the Hopkins Verbal Learning Test-R and WMS-III Logical Memory.

resultsBoth ET and PD patients performed significantly worse on word list than story memory recall tasks. The magnitude of the difference between these two memory tasks was similar for ET and PD patients. In both patient groups, performance on measures of executive function and auditory attention/working memory was not distinctly correlated with word list vs. story recall.

conclusionsThese findings suggest that frontal-executive dysfunction in both ET and PD may negatively influence performance on memory tests that are not inherently organized. Although the pathophysiology of these two 'movement disorders' are quite distinct, both have downstream effects on thalamo-frontal circuitry which may provide a common pathway for a similar memory phenotype. Findings are discussed in terms of neuroimaging evidence, conceptual models, and best practice.

Indexed as

AttentionExecutive FunctionLanguageMemory, Short-TermVerbal LearningAgedCase-Control StudiesEssential TremorFemaleHumansMaleMiddle AgedNeuropsychological TestsParkinson DiseaseRetrospective StudiesCerebellum.CognitionEssential tremorMemoryParkinson’s disease

Identifiers

PMID26689342
PMCPMC4738178

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.