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首页> 外文期刊>Human physiology >Subjective Acoustic Field of Patients with Cortical Temporal Lobe Epilepsy as Revealed Using Signals Simulating Various Directions of Sound Movement
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Subjective Acoustic Field of Patients with Cortical Temporal Lobe Epilepsy as Revealed Using Signals Simulating Various Directions of Sound Movement

机译：通过模拟声音运动各个方向的信号揭示皮质颞叶癫痫患者的主观声场

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摘要

Perception of signals simulating directional movement of a sound source was studied in two groups of patients with cortical temporal lobe epilepsy and epileptic activity foci in the right or left temporal area of the cortex. On dichotic stimulation, the character and length of the trajectories of subjective auditory images (SAIs) were determined as dependent on the direction of SAI movement and the initial interaural delay (700, 400, and 200 μs). For any delay or direction examined, SAI trajectories were shorter in the patients of both groups than in healthy subjects. Regardless of the side of an epileptic focus, the shortest trajectories were detected in the hemisphere where SAI movement ended, especially at an interaural delay of 200 μs. The narrowest subjective acoustic field was observed in patients with epileptic foci in the right temporal cortex. Possible mechanisms of the changes in spatial hearing are discussed. The changes in SAI perception are assumed to result from distorted binaural interactions, which manifest themselves in functional asymmetry of the two auditory centers and may be caused by a convulsive activity focus present in one temporal lobe.
机译：在两组患有颞叶皮质颞叶癫痫和皮质左右颞叶区域癫痫活动灶的患者中研究了模拟声源定向运动的信号感知。在分叉刺激下，主观听觉图像（SAI）的轨迹特征和长度取决于SAI移动的方向和初始耳间延迟（700、400和200μs）。对于检查的任何延迟或方向，两组患者的SAI轨迹都比健康受试者短。不管癫痫病灶的哪一侧，在SAI运动结束的半球中都检测到了最短的轨迹，特别是在200μs的耳间延迟时。在右侧颞叶皮质有癫痫灶的患者中观察到最窄的主观声场。讨论了空间听觉变化的可能机制。假设SAI感知的变化是由双耳相互作用失真引起的，双耳相互作用失真表现为两个听觉中心的功能不对称，并且可能是由于一个颞叶存在惊厥活动所致。

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