The journal of pain : official journal of the American Pain Society
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Ecological Momentary Assessment (EMA) is a data collection method to understand people's real-time experience in daily life. To date, no standard instrument exists to measure the pain experience using EMA that provides relevant information for most chronic pain conditions. The goal of this study was to fill this gap by developing a comprehensive EMA pain instrument (cEMAp). ⋯ We expect this new instrument will allow researchers and clinicians to paint a fine-grained and nuanced picture of people's everyday pain in a comprehensive and standardized way. PERSPECTIVE: This article presents the development of a new pain assessment based on Ecological Momentary Assessment to comprehensively measure chronic pain in daily life. Continued use and examination of the new instrument could facilitate standardization and comparability of momentary pain assessment methods across studies and chronic pain conditions.
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The study of orofacial neuropathic pain necessitates the use of innovative assessment techniques, such as the facial expression of pain, which mirrors the internal state of the animals and could be utilized to identify the neural correlations involved. The Anterior Cingulate Cortex (ACC) is a crucial center in the processing of sensory and affective components of acute and neuropathic pain. However, its role in the facial response to pain remains a mystery. ⋯ Our study underscores the significant role of ACC in the development of signs of orofacial neuropathic pain, such as exacerbated facial response to mechanical stimuli. PERSPECTIVE: This article presents evidence on the sensory coding of mechanical stimulation in a neuropathic pain model in the Anterior Cingulate Cortex, using facial expression as a manifestation of the internal painful state. This evaluation provides a novel approach to evaluating the well-being of animals with neuropathic pain.