Category: Rating Scales
Objective: Determine if expressive language measures from neuropsychological testing correspond to subjective communication struggles in Deep Brain Stimulation (DBS) candidates.
Background: A number of studies have reported decrements on tests of verbal fluency following DBS in Parkinson’s disease (PD) and Essential Tremor (ET). Fluency deficits observed in presurgical evaluations are therefore considered in assessing candidacy and target selection. However, correspondence between fluency test performance and real-world communication is unclear.
Method: The Communication Participation Item Bank (CPIB) is a self-report scale of the extent to which a neurologic condition interferes with communication across 10 different contexts. The CPIB was administered to 79 PD and 41 ET patients during pre-DBS neuropsychological evaluations. Neuropsychological test scores were corrected for demographics according to test manuals. Group differences were assessed using independent sample t-tests. Correlations with language measures were examined separately by group.
Results: No group differences were observed on cognitive screening (Mattis Dementia Rating Scale). The PD group performed slightly better than ET on phonemic fluency and slightly worse on confrontation naming; however, the PD group endorsed significantly more communication interference on the CPIB [table1]. In PD but not ET, worse scores on semantic fluency were associated with lower CPIB scores (more interference), Spearman’s r=.425, p<.001. Phonemic verbal fluency and confrontation naming did not show statistically significant associations with CPIB in either group [table2].
Conclusion: Current findings suggest limited correspondence between expressive language tests and reported real-world interpersonal communication struggles for individuals with PD and ET seeking DBS surgery. The need for a functional communication instrument in this setting is thus emphasized. Future studies will examine post-surgical changes on subjective and objective measures.
References: 1. Cernera, S., Okun, M. S., & Gunduz, A. (2019). A Review of Cognitive Outcomes Across Movement Disorder Patients Undergoing Deep Brain Stimulation. Frontiers in neurology, 10, 419.
2. Baylor, C., Yorkston, K., Eadie, T., Kim, J., Chung, H., & Amtmann, D. (2013). The Communicative Participation Item Bank (CPIB): item bank calibration and development of a disorder-generic short form. Journal of speech, language, and hearing research : JSLHR, 56(4), 1190–1208.
To cite this abstract in AMA style:T. Turner, L. Blackett, F. Rodriguez-Porcel. Association between subjective and objective language measures in DBS candidates [abstract]. Mov Disord. 2023; 38 (suppl 1). https://www.mdsabstracts.org/abstract/association-between-subjective-and-objective-language-measures-in-dbs-candidates/. Accessed September 25, 2023.
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