在单边空间疏忽中,中部颗粒状皮层的作用
Daisuke Ishii1,2, Hironobu Osaki3,4, Arito Yozu5,6
1Center for Medical Sciences, Ibaraki Prefectural University of Health Sciences, Ibaraki, Japan. ishiid@ipu.ac.jp.
Experimental brain research
|April 22, 2024
概括
在小鼠的前端中位角质皮层 (AGm) 的病变与单边空间疏忽 (USN) 的恢复速度较慢有关. 这表明前AGm区域在空间注意力和USN恢复方面发挥了特殊作用.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 神经生物学 神经生物学 神经生物学
背景情况:
- 单边空间疏忽 (USN) 是一种因注意力网络受损而产生的障碍,影响各种感官模式.
- 动物的中位角质皮层 (AGm) 参与空间注意力,具有明显的面部 (体感) 和尾部 (视觉) 输入.
- 以前的研究表明,在前面的AGM病变后,USN恢复速度较慢,但整个AGM的功能差异仍然不清楚.
研究的目的:
- 在小鼠中风模型中调查整个AGm中的损伤位置与USN严重程度之间的关系.
- 探索前部,中部和后部AGM区域的空间注意力的功能差异.
主要方法:
- 利用小鼠中风模型诱导中枢中风在中枢角质皮层 (AGm) 的单边焦点发作.
- 采用一种新开发的,基于程序的自动化分析方法,在没有人类干预的情况下评估类似USN的行为.
- 在特定的术后几天 (POD 10-18) 中评估USN的恢复,并评估运动功能 (手臂入口,移动速度).
主要成果:
- 位于AGm内较前面的病变与POD 10-18期间USN的恢复速度较慢有关 (r = -0.302; p = 0.028).
- 在AGM心脏病发作之前和之后,没有观察到手臂总输入或最大移动速度的显著差异,这表明没有运动缺陷.
- 所有单边的焦点AGM心脏病发作都诱导了类似USN的行为,没有同时发生的运动障碍.
结论:
- 前部AGM病变可能导致小鼠在USN类行为中恢复速度较慢.
- 在AGm中的特定心脏病发作部位和USN恢复率之间存在微弱的关联.
- AGm在空间关注中起着至关重要的作用,特定的子区域可能会影响忽视严重程度和恢复动态.
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