Plasticity of Thalamic Inputs of Inhibitory Neurons

描述（由申请人提供）： 皮层感觉地图对知觉学习很重要。皮层抑制在这些地图的形成、维持和适应性中起着重要作用。我们假设，长时程增强（LTP）的丘脑皮层突触到抑制性神经元是重要的感觉地图的完善。具体目的1：本研究的第一个目的是确定是否可以在丘脑皮层突触上引起LTP到抑制性神经元。具体目标二：本实验的目的是使用选择性受体拮抗剂确定LTP是否依赖于NMDA受体、钙渗透性AMPA受体、代谢型谷氨酸受体或L型电压依赖性钙通道。具体目的3：本实验的目的是确定丘脑对抑制性神经元输入的LTP是否依赖于一个关键期。本研究的结果将增进我们对知觉学习机制的了解。

DESCRIPTION (provided by applicant): Cortical sensory maps are important for perceptual learning. Cortical inhibition has an important role in the formation, maintenance and adaptability of these maps. We hypothesize that long-term potentiation (LTP) of thalamocortical synapses onto inhibitory neurons is important for the refinement of sensory maps. Specific Aim 1: The first aim of this study is to determine if LTP can be elicited at thalamocortical synapses onto inhibitory neurons. Specific Aim 2: The aim of this experiment is to determine if LTP is dependent on NMDA receptors, calcium-permeable AMPA receptors, metabotropic glutamate receptors or L-type voltage dependent calcium channels, using selective receptor antagonists. Specific Aim 3: The aim of this expedment is to determine if LTP of thalamic inputs onto inhibitory neurons is dependent on a critical period. The results of this project will increase our understanding of the mechanisms involve in perceptual learning.