长期的成年人视觉可塑性在基因决定的外周视力损失的发展关键时期后
Otília C d'Almeida1,2, Joana M Sampaio1, Sónia Ferreira1
1Univ Coimbra, Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), Institute for Nuclear Sciences Applied to Health (ICNAS), Coimbra, Portugal.
Heliyon
|March 3, 2025
概括
成人的神经可塑性即使在关键的发育时期之后也是可能的. 对色素视网膜炎的研究表明,视觉皮层可以在成年后的外周视力损失后重组.
科学领域:
- 神经科学是一个神经科学.
- 眼科医生 眼科 眼科
- 视觉系统研究 视觉系统研究
背景情况:
- 在视觉系统中,成人神经可塑性是有争议的,有相互矛盾的证据.
- 之前的研究集中在中部视力损失,可能被适应性策略所混.
- 随着年龄的增长,可塑性可能会下降,并且在外周视力丧失方面不太了解.
研究的目的:
- 为了研究成年人视觉皮质可塑性.
- 检查视网膜色素炎 (RP) 的可塑性,这是一种导致外周视力丧失的疾病.
- 为了区分可塑性与视力丧失的即时适应性反应.
主要方法:
- 进行了一项与一对一匹配的病例控制研究.
- 人工视镜技术模拟了控制器中的RP类视野缺陷.
- 功能性磁共振成像 (fMRI) 视网膜层测量了人口受体场 (pRFs) 以评估长期可塑性.
主要成果:
- 在RP患者中发现视觉皮层重组的证据.
- 在pRF大小指标的变化和解释的差异表明了可塑性.
- 尽管在关键视觉成熟期后出现了外周视力损失,但重组发生了.
结论:
- 周围视力损失可以触发视觉皮质可塑性超出关键时期.
- 成年人视觉系统保留了重新组织的能力.
- 这些发现挑战了关于成人神经可塑性极限的现有观念.
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