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Deficits in Emotion Recognition and Theory of Mind in Parkinson's Disease Patients With and Without Cognitive Impairments. | LitMetric

AI Article Synopsis

  • Parkinson's disease (PD) is associated with difficulties in recognizing emotions and social cognition, which are not typically included in the criteria for mild cognitive impairment (MCI) in PD, prompting a study to explore these deficits in early PD patients.
  • The study involved 45 PD participants, categorized into cognitively unimpaired (CU) and MCI groups, who were assessed on their ability to recognize emotions and attribute mental states using standardized tests, comparing their performance with 45 healthy controls.
  • Results showed that MCI patients had significantly poorer performance in emotion recognition and social tasks compared to healthy controls and CU patients, indicating cognitive deficits related to social cognition in early PD, with some CU patients also exhibiting impairments.

Article Abstract

Background: Emotion recognition and social deficits have been previously reported in Parkinson's disease (PD). However, the extent of these impairments is still unclear and social cognition is excluded from the cognitive domains considered in the current criteria for PD mild cognitive impairment (MCI). This study aims to analyze emotion recognition, affective and cognitive theory of mind in early PD patients classified according to Level II MCI criteria, and to evaluate the prevalence of socio-cognitive deficits in this sample.

Methods: We enrolled 45 participants with PD, classified as cognitively unimpaired (CU; = 32) or MCI ( = 13) based on a standard neuropsychological assessment. Social cognitive skills were evaluated through validated tests for emotion recognition (i.e., Ekman 60-faces test, Ek60 Test) and mental states attribution (Story-based Empathy Task, SET) and compared to a group of 45 healthy controls (HC). Between-group differences in social tasks were performed, as well as correlation analyses to assess the relationship between social, cognitive, and clinical variables. Finally, the number of patients with social cognitive impairments in both MCI and CU subgroups was computed based on Italian normative data.

Results: Statistical comparison revealed significant differences among groups in the Ek60 test, with MCI obtaining significantly lower scores than HC and CU, especially for negative emotions. Significant differences were detected also in the SET, with lower performance in emotion and intention attribution for both PD groups compared to HC. A significant correlation emerged between the Ek60 test and emotion attribution. Nine patients showed poor performance at social tasks, five of them being classified as PD-CU.

Discussion: Parkinson's disease cognitive profile was characterized by emotion recognition and attribution deficits. These results, as well as the detection of CU patients with isolated socio-cognitive impairments, underline the importance of assessing social cognition in PD as a possible early marker of cognitive decline.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9138611PMC
http://dx.doi.org/10.3389/fpsyg.2022.866809DOI Listing

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