巩膜电活性反应的区域差异。

IF 1.7 4区 医学 Q3 ENGINEERING, BIOMEDICAL
Hamed Hatami-Marbini, Jafar Arash Mehr
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引用次数: 0

摘要

巩膜在受到外部电刺激时会产生机械反应。巩膜的电活性反应是其电荷密度、机械特性、厚度和外加电压强度的函数。本研究的主要目的是调查猪巩膜电反应的区域差异。为此,我们从上-颞、上-鼻、下-颞和下-鼻象限按经线方向切割巩膜条。此外,我们还从后部、赤道部和前部区域沿周向切除了样本。在 0.15 M NaCl 溶液中,在 10 V 和 15 V 电压下测量了这些样本的电活性弯曲响应。通过从前端或后端夹持经线样本,在两种不同的配置下对其进行了测试。结果发现,巩膜电活性变形随着电压的增加而增大。此外,无论从哪个区域切除巩膜条,从其前端夹持时,它们的电活性反应都要大得多。与经线样条不同的是,圆周样条的电活性反应明显取决于位置,即后端样条的平均最大弯曲角度明显大于赤道和前端样条。根据巩膜在整个眼球中的生化和生物力学特性的变化,讨论了巩膜在不同区域的电活性弯曲反应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Regional differences in electroactive response of the sclera.

The sclera exhibits mechanical response when subjected to an external electric stimulation. The scleral electroactive response is a function of its charge density, mechanical properties, thickness, and strength of the applied electric voltage. The primary objective of the present work was to investigate the regional differences in the electroactive response of porcine sclera. To this end, we cut scleral strips in meridional directions from superior-temporal, superior-nasal, inferior-temporal, and inferior-nasal quadrants. In addition, we excised samples circumferentially from the posterior, equatorial, and anterior regions. The electroactive bending response of these samples was measured under 10 and 15 V in 0.15 M NaCl solution. The meridional samples were tested under two different configurations by clamping them either from their anterior or posterior end. It was observed that the scleral electroactive deformation increased with increasing the the electric voltage. Furthermore, regardless of the region from which meridional strips were excised, their electroactive response was considerably larger when they were clamped from their anterior end. Unlike meridional strips, the electroactive response of circumferential samples was significantly dependent on the location, that is, the average maximum bending angle of posterior samples was significantly larger than that of equatorial and anterior strips. The regionally different electroactive bending response of the sclera was discussed in terms of the variation in its biochemical and biomechanical properties throughout the eyeball.

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来源期刊
CiteScore
3.60
自引率
5.60%
发文量
122
审稿时长
6 months
期刊介绍: The Journal of Engineering in Medicine is an interdisciplinary journal encompassing all aspects of engineering in medicine. The Journal is a vital tool for maintaining an understanding of the newest techniques and research in medical engineering.
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