在延迟的空间交替中,后皮层的皮层作用
Dev Laxman Subramanian1, Adam M P Miller1, David M Smith1
1Department of Psychology, Cornell University, Ithaca, NY 14853.
bioRxiv : the preprint server for biology
|July 1, 2024
概括
后皮质 (RSC) 对于空间记忆至关重要. 延迟期间的RSC神经元活动编码空间信息,对任务执行至关重要,特别是在延迟时间较长的情况下.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 行为神经科学 行为神经科学
背景情况:
- 后皮质 (RSC) 已被公认为其在空间认知中的作用.
- 以前的研究表明,RSC对于空间工作记忆任务至关重要.
- 记忆延迟期间RSC神经编码的精确机制尚不清楚.
研究的目的:
- 为了研究后皮质 (RSC) 神经元如何在延迟期间编码空间记忆.
- 为了检查RSC病变对不同延迟时间的空间交替性能的影响.
主要方法:
- 在老鼠中诱导了RSC的兴奋毒性病变.
- 老鼠执行了一个空间交替任务,延迟长度各不相同.
- 在RSC中的神经元活动在任务执行期间被记录下来.
主要成果:
- RSC病变显著损害了空间交替,特别是在延迟时间较长的情况下.
- 在延迟期间,RSC神经元在左与右试验之前显示出明显的触发模式.
- 这些差异性发射模式没有先前的错误.
- 许多RSC神经元表现出试验启动的激发突发,使方向选择有所差异.
结论:
- 在延迟期间的RSC神经元发射模式编码关键的空间工作记忆信息.
- 这些模式对于成功的空间交替表现至关重要.
- RSC活动也可能为空间导航提供主要的行为反应.
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