Toward Automated Cognitive Assessment in Parkinson's Disease Using Pretrained Language Models

• URL: http://arxiv.org/abs/2511.08806v1
• Date: Thu, 13 Nov 2025 01:09:32 GMT
• Title: Toward Automated Cognitive Assessment in Parkinson's Disease Using Pretrained Language Models
• Abstract summary: This study developed and evaluated natural language processing (NLP) models to automatically identify categories.<n>Three model families, a Bio_ClinicalBERT-based span categorization model for nested entity recognition, and a fine-tuned Meta-Llama-3-8B-Instruct model were evaluated.<n>The fine-tuned Meta-Llama-3-8B-Instruct achieved the highest overall F1-scores (0.74 micro-average and 0.59 macro-average), particularly excelling in context-dependent categories such as thought and social interaction.
• Score: 7.799870915134572
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Understanding how individuals with Parkinson's disease (PD) describe cognitive experiences in their daily lives can offer valuable insights into disease-related cognitive and emotional changes. However, extracting such information from unstructured patient narratives is challenging due to the subtle, overlapping nature of cognitive constructs. This study developed and evaluated natural language processing (NLP) models to automatically identify categories that reflect various cognitive processes from de-identified first-person narratives. Three model families, a Bio_ClinicalBERT-based span categorization model for nested entity recognition, a fine-tuned Meta-Llama-3-8B-Instruct model using QLoRA for instruction following, and GPT-4o mini evaluated under zero- and few-shot settings, were compared on their performance on extracting seven categories. Our findings indicated that model performance varied substantially across categories and model families. The fine-tuned Meta-Llama-3-8B-Instruct achieved the highest overall F1-scores (0.74 micro-average and 0.59 macro-average), particularly excelling in context-dependent categories such as thought and social interaction. Bio_ClinicalBERT exhibited high precision but low recall and performed comparable to Llama for some category types such as location and time but failed on other categories such as thought, emotion and social interaction. Compared to conventional information extraction tasks, this task presents a greater challenge due to the abstract and overlapping nature of narrative accounts of complex cognitive processes. Nonetheless, with continued refinement, these NLP systems hold promise for enabling low-burden, longitudinal monitoring of cognitive function and serving as a valuable complement to formal neuropsychological assessments in PD.

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