语言和记忆的神经 (重组):对神经可塑性和认知的影响
Alena Stasenko1, Erik Kaestner2, Jonathan Rodriguez3
1Ohio Health Rehabilitation Hospital, Columbus, Ohio, USA astasenko@ucsd.edu.
Journal of neurology, neurosurgery, and psychiatry
|January 31, 2025
概括
当语言占主导地位异常时,记忆会重新组织. 然而,典型的语言主导性显示出语言-记忆一致性较弱,特别是在左半球中,记忆重组预测了更好的外科手术结果.
科学领域:
- 神经科学是一个神经科学.
- 认知神经学 认知神经学
- 神经外科 神经外科
背景情况:
- 了解神经损伤后语言和记忆网络如何重组对于神经可塑性见解和术前规划至关重要.
- 关于中语言和记忆重组之间的相互作用及其对记忆结果的影响的研究有限.
- 这项研究研究了关节重组模式及其与记忆功能相关性的研究.
研究的目的:
- 检查患者联合语言和记忆重组的速度和模式.
- 确定这些重组模式与手术前后记忆功能之间的关系.
- 通过澄清语言和记忆侧面化之间的相互作用,为术前规划提供信息.
主要方法:
- 在三个神经外科中心对162名患者使用了Wada手术.
- 在34名参与者中分析了语言和全球/口头记忆之间的抵押模式 (一致/不一致).
- 将这些模式与临床特征和术前/术后记忆结果相关联.
主要成果:
- 语言和记忆附带化之间的总体一致性最小至弱 (kappa=0.28-0.44).
- 不一致性在左侧语言中很常见 (全球52%,口头记忆32%) 并且在左半球和 mesial temporal sclerosis 中很明显.
- 右侧语言一致预测了右侧记忆 (95%-100%);不一致预测了优异的术后记忆结果.
结论:
- 非典型的语言优势与记忆重组相关,而典型的优势显示语言-记忆一致性较弱,特别是在左半球发作时.
- 半球间的语言转移可能会导致记忆转移以维持网络通信.
- 记忆可以独立地重组,不一致性有利于术后的结果,而不会影响术前的功能,支持单独的术前映射.
相关概念视频
01:01Neuroplasticity
272
Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
272
01:27Language and Cognition
318
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
318
01:14Role of Cerebellum and Prefrontal Cortex in Memory
345
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
345
01:10Higher Mental Functions of the Brain: Language
718
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
718
01:35Long-term Potentiation
54.7K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
54.7K
01:15Neurogenesis and Regeneration of Nervous Tissue
701
In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
701