在配对的关联性刺激和元可塑性中的类内相关性
Giuditta Schapira1, Justin Chang1, Yeun Kim1
1Ahmanson-Lovelace Brain Mapping Center, Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA.
NeuroSci
|November 1, 2024
概括
配对关联刺激 (PAS) 在会话内显示出良好的可重复性,但会话间的可重复性较差. 这表明长期的神经可塑性影响可能会影响这种大脑刺激技术的可靠性.
科学领域:
- 神经科学是一个神经科学.
- 神经生理学 神经生理学
- 大脑刺激 大脑刺激
背景情况:
- 配对关联刺激 (PAS) 是一种常见的非侵入性脑刺激方法.
- 评估PAS的可重复性对于其可靠的应用至关重要.
- 之前关于PAS可重现性的研究已经产生了不一致的结果.
研究的目的:
- 在健康志愿者中系统评估PAS的可重现性.
- 调查PAS的会内和会间可靠性.
- 为了确定影响PAS可重现性的潜在因素.
主要方法:
- 对健康参与者进行了两项单独的研究.
- 类内相关系数 (ICC) 用于测量可重现性.
- 研究1:五次PAS会议,10名欧洲议员每10分钟记录一次PAS后1小时.
- 研究2:两个PAS会议,50名欧洲议员在PAS后的20分钟和50分钟记录下来.
主要成果:
- 在这两项研究中,会议内部的ICC都相当出色.
- 在这两项研究中,会议间的ICC都很差.
- PAS会议分隔一周时间.
结论:
- 在一次会议内进行的测量中,PAS显示出良好的可靠性.
- 会议间复制性差表明长期神经可塑性的潜在干扰.
- 需要进一步的研究来理解和减轻元可塑性对PAS可靠性的影响.
更多相关视频
08:43Combined Shuttle-Box Training with Electrophysiological Cortex Recording and Stimulation as a Tool to Study Perception and Learning
Published on: October 22, 2015
10.3K
10:25Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging
Published on: June 5, 2017
13.9K
相关概念视频
Real-World Application of Classical Conditioning
529
Classical conditioning not only includes the initial pairing of stimuli but also extends to more complex forms, such as higher-order conditioning. Higher-order conditioning involves creating associations beyond the primary conditioned stimulus, resulting in a chain of conditioned responses.
Higher-order, or second-order, conditioning occurs when a neutral stimulus becomes associated with an already established conditioned stimulus through repeated pairings. For instance, if a dog has been...
Higher-order, or second-order, conditioning occurs when a neutral stimulus becomes associated with an already established conditioned stimulus through repeated pairings. For instance, if a dog has been...
529
Associative Learning
300
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
300
Long-term Potentiation
2.7K
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.
Hebbian LTP
LTP can occur when...
Hebbian LTP
LTP can occur when...
2.7K
Classical Conditioning
449
Associative learning, a core principle in behavioral psychology, involves forming connections between events and facilitating learned responses. This concept is vividly illustrated by classical conditioning, a process extensively studied by the Russian physiologist Ivan Pavlov. Pavlov's pioneering research on dogs' digestive systems led to the discovery that behaviors can be learned through association, laying the groundwork for classical conditioning.
Ivan Pavlov observed that dogs...
Ivan Pavlov observed that dogs...
449
