主观耳鸣的神经解剖相关性:高级皮层形态分析的启示。

IF 2.9 2区 医学 Q2 NEUROSCIENCES
Himanshu R Pandey, Amit Keshri, Neeraj Sinha, Uttam Kumar
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引用次数: 0

摘要

主观性耳鸣的特点是在没有外部刺激的情况下感觉到幻听,这给听力学和神经学带来了重大挑战。人们曾一度认为耳鸣主要涉及听觉通路中的异常神经活动,而现在则认为耳鸣涉及更广泛的神经解剖结构。本研究调查了听觉、认知和感觉处理区域之间的联系,这对于揭示耳鸣复杂的神经生物学基础至关重要。通过使用高分辨率 T1 加权磁共振成像,我们比较了 52 名主观性耳鸣患者和 52 名年龄匹配的健康对照者,重点研究了大脑皮层的特征,包括分形维度、回化率和沟深度。我们进行了协变量分析,以探讨耳鸣持续时间、耳鸣障碍量表评分、焦虑评分和神经解剖变化之间的关系。我们发现,涉及感觉处理、认知和情绪调节的主要脑区,包括岛叶、枕叶外侧皮层、额叶中回和顶叶上小叶都发生了明显变化。这些神经解剖学变化与耳鸣症状的严重程度和慢性化程度密切相关。我们的研究结果揭示了与主观性耳鸣相关的大脑结构的深刻变化,为了解耳鸣的内在机制提供了宝贵的见解,并为指导未来的研究和治疗干预提供了潜在的框架。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Neuroanatomical correlates of subjective tinnitus: insights from advanced cortical morphology analysis.

Subjective tinnitus, characterized by the perception of phantom sounds in the absence of external stimuli, presents significant challenges in both audiology and neurology. Once thought to primarily involve aberrant neural activity within auditory pathways, it is now understood to engage a broader array of neuroanatomical structures. This study investigated the connections between auditory, cognitive, and sensory processing regions, which are crucial for unraveling the complex neurobiological basis of tinnitus. Using high-resolution T1-weighted magnetic resonance imaging, we compared 52 individuals with subjective tinnitus with 52 age-matched healthy controls, focusing on cerebral cortex features, including fractal dimensionality, gyrification, and sulcal depth. Covariate analyses were conducted to explore the relationships between tinnitus duration, Tinnitus Handicap Inventory scores, anxiety score, and neuroanatomical changes. We found significant alterations in key brain regions involved in sensory processing, cognition, and emotional regulation, including the insula, lateral occipital cortex, middle frontal gyrus, and superior parietal lobule. These neuroanatomical changes were strongly correlated with the severity and chronicity of tinnitus symptoms. Our findings reveal profound structural changes in the brain associated with subjective tinnitus, offering valuable insights into the condition's underlying mechanisms and providing a potential framework for guiding future research and therapeutic interventions.

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来源期刊
Cerebral cortex
Cerebral cortex 医学-神经科学
CiteScore
6.30
自引率
8.10%
发文量
510
审稿时长
2 months
期刊介绍: Cerebral Cortex publishes papers on the development, organization, plasticity, and function of the cerebral cortex, including the hippocampus. Studies with clear relevance to the cerebral cortex, such as the thalamocortical relationship or cortico-subcortical interactions, are also included. The journal is multidisciplinary and covers the large variety of modern neurobiological and neuropsychological techniques, including anatomy, biochemistry, molecular neurobiology, electrophysiology, behavior, artificial intelligence, and theoretical modeling. In addition to research articles, special features such as brief reviews, book reviews, and commentaries are included.
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