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Parkinson Disease: HELP
Articles by Russell M. Bauer
Based on 4 articles published since 2010
(Why 4 articles?)

Between 2010 and 2020, Russell Bauer wrote the following 4 articles about Parkinson Disease.
+ Citations + Abstracts
1 Article Memory Similarities Between Essential Tremor and Parkinson's Disease: A Final Common Pathway? 2015

Lafo, Jacob A / Jones, Jacob D / Okun, Michael S / Bauer, Russell M / Price, Catherine C / Bowers, Dawn. ·a Department of Clinical and Health Psychology, College of Public Health & Health Professions , University of Florida , Gainesville , FL , USA. · c Center for Movement Disorders and Neurorestoration , University of Florida College of Medicine, University of Florida , Gainesville , FL , USA. · b Department of Neurology , University of Florida College of Medicine, University of Florida , Gainesville , FL , USA. ·Clin Neuropsychol · Pubmed #26689342.

ABSTRACT: OBJECTIVE: A 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). METHOD: Participants 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. RESULTS: Both 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. CONCLUSIONS: These 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.

2 Article Reliability of three Benton Judgment of Line Orientation short forms in idiopathic Parkinson's disease. 2013

Gullett, Joseph M / Price, Catherine C / Nguyen, Peter / Okun, Michael S / Bauer, Russell M / Bowers, Dawn. ·a Department of Clinical and Health Psychology , University of Florida , Gainesville , FL , USA. ·Clin Neuropsychol · Pubmed #23957375.

ABSTRACT: Individuals with Parkinson's disease (PD) often exhibit deficits in visuospatial functioning throughout the course of their disease. These deficits should be carefully assessed as they may have implications for patient safety and disease severity. One of the most commonly administered tests of visuospatial ability, the Benton Judgment of Line Orientation (JLO), consists of 30 pairs of lines requiring the patient to match the orientation of two lines to an array of 11 lines on a separate page. Reliable short forms have been constructed out of the full JLO form, but the reliability of these forms in PD has yet to be examined. Recent functional MRI studies examining the JLO demonstrate right parietal and occipital activation, as well as bilateral frontal activation and PD is known to adversely affect these pathways. We compared the reliability of the original full form to three unique short forms in a sample of 141 non-demented, idiopathic PD patients and 56 age- and education-matched controls. Results indicated that a two-thirds length short form can be used with high reliability and classification accuracy in patients with idiopathic PD. The other short forms performed in a similar, though slightly less reliable manner.

3 Article Apathy and depression: separate factors in Parkinson's disease. 2011

Kirsch-Darrow, Lindsey / Marsiske, Michael / Okun, Michael S / Bauer, Russell / Bowers, Dawn. ·Department of Clinical and Health Psychology, University of Florida, Gainesville, Florida 32611, USA. dawnbowers@phhp.ufl.edu ·J Int Neuropsychol Soc · Pubmed #22040900.

ABSTRACT: The objective of this study was to test the hypothesis that apathy and depression are dissociable in Parkinson disease (PD) by conducting a confirmatory factor analysis (CFA) of items from two commonly used mood scales. A total of 161 non-demented PD patients (age = 64.1; ± 8.4 years) were administered the Apathy Scale and the Beck Depression Inventory-II. Items were hypothesized to load onto four factors: (1) an apathy factor representing loss of motivation, (2) dysphoric mood factor representing sadness and negativity, (3) loss of interest/pleasure factor representing the features common to both apathy and depression, and (4) a somatic factor representing bodily complaints. Results indicated a good fit for the overall CFA model, χ² (128, N = 146) = 194.9; p<.01. RMSEA was .060 (p = .16). The four-factor model was significantly better than all alternative nested models at p < .001, including an overarching single factor model, representing "depression." Results support the concept that apathy and depression are discrete constructs. We suggest a "factor based" scoring of the Apathy Scale and Beck Depression Inventory-II that disentangles symptoms related to apathy, depression, overlapping symptoms, and somatic complaints. Such scoring may be important in providing useful information regarding differential treatment options.

4 Article The case for testing memory with both stories and word lists prior to dbs surgery for Parkinson's Disease. 2011

Zahodne, Laura B / Bowers, Dawn / Price, Catherine C / Bauer, Russell M / Nisenzon, Anne / Foote, Kelly D / Okun, Michael S. ·Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA. ·Clin Neuropsychol · Pubmed #21491347.

ABSTRACT: Patients seeking deep brain stimulation (DBS) surgery for Parkinson's disease (PD) typically undergo neuropsychological assessment to determine candidacy for surgery, with poor memory performance interpreted as a contraindication. Patients with PD may exhibit worse memory for word lists than for stories due to the lack of inherent organization in a list of unrelated words. Unfortunately, word list and story tasks are typically developed from different normative datasets, and the existence of a memory performance discrepancy in PD has been challenged. We compared recall of stories and word lists in 35 non-demented PD candidates for DBS. We administered commonly used neuropsychological measures of word list and story memory (Hopkins Verbal Learning Test, Logical Memory), along with a second word list task that was co-normed with the story task. Age-corrected scores were higher for the story task than for both word list tasks. Compared to story recall, word list recall correlated more consistently with motor severity and composite measures of processing speed, working memory, and executive functioning. These results support the classic view of fronto-subcortical contributions to memory in PD and suggest that executive deficits may influence word list recall more than story recall. We recommend a multi-componential memory battery in the neuropsychological assessment of DBS candidates to characterize both mesial temporal and frontal-executive memory processes. One should not rely solely on a word list task because patients exhibiting poor memory for word lists may perform better with stories and therefore deserve an interdisciplinary discussion for DBS surgery.