Action Potential Initiation and Conduction in Axons Calcium and Signal Transduction Calcium Channel and Calcium-Activated Potassium Channel Coupling Calcium Channel Subtypes Involved in Neurotransmitter Release Calcium Channels Calcium Channels and SNARE Proteins Calcium Homeostasis in Glia Calcium Waves in Glia Calcium Waves Purinergic Regulation Cotransmission Cyclic Nucleotide-Gated and Hyperpolarization-Activated Channels Dendritic Signal Integration Dorsal Root Ganglion Neurons Glial Influence on Synaptic Transmission Glutamate Receptor Clusters Narp, EphB2 Receptor, Stargazin Glutamate Regulation of Dendritic Spine Form and Function Hair Cells Sensory Transduction Hodgkin-Huxley Models Information Coding Inwardly Rectifying Potassium Channels Ion Channel Localization in Axons Ion Channel Localization in Cell Bodies and Dendrites Ionic Channels in Glia Large Conductance Calcium-Activated Potassium Channels Myelin Molecular Architecture of CNS and PNS Myelin Sheath Neuromodulation of Calcium Channels Neuromodulation of Sodium Channels Neuronal Pacemaking , Neutrotransmission and Neuromodulation Acetylcholine Potassium Channel Regulation Schwann Cells and Axon Relationship Sodium Channels Spike-Timing-Dependent Plasticity (STDP) Spine Plasticity Synaptic Transmission Models Transient Receptor Potential (TRP) Channels Two-P-Domain (K2p) Potassium Channels Leak Conductance Regulators of Excitability Ultrastructural Analysis of Spine Plasticity Voltage Gated Potassium Channels Structure and Function of Kvl to Kv9 Subfamilies Voltage-Gated Calcium Channels Voltage-Gated Potassium Channels (Kv10-Kv12) 神經係統的基因錶達與調控 Alternative Splicing in the Nervous System Alzheimers Disease Molecular Genetics Alzheimers Disease Transgenic Mouse Models Aversive Emotions Genetic Mechanisms of Serotonin BAC Transgenesis Cell-Type Specific Expression in the Nervous System Circadian Gene Expression in the Suprachiasmatic Nucleus Clock Gene Regulation of Endocrine Function Clock Genes and Metabolic Regulation Decoding Neuron Transcriptome by SAGE Dendrites Localized Translation Gene Expression Dysregulation in CNS Pathophysiology Gene Expression in Normal Aging Brain Gene Expression in the Evolution of the Human Brain Gene Expression Regulation Activity-Dependent Gene Expression Regulation Chromatin Modification in the CNS Gene Expression Regulation Steroid Hormone Effects Gene Therapy Direct Viral Delivery Gene Therapy Genetically Modified Cells Genetic Influence on CNS Gene Expression Impact on Behavior Genetic Regulation of Circadian Rhythms in Drosophila Genomic Disorder and Gene Expression in the Developing CNS Genomics of Brain Aging Apolipoprotein E Genomics of Brain Aging Nuclear and Mitochondrial Genomes Genomics of Brain Aging Twin Studies Hippocampus Molecular Anatomy Hox Genes Expression Microarray use for the Analysis of the CNS Molecular Anatomy of the Mammalian Brain Neuromuscular Junction Neuronal Regulation of Gene Transcription at the Vertebrate Olfactory Insights from Transcriptional Profiling Pain and Genes Plasticity, and Activity-Dependent Regulation of Gene Expression Psychiatric Disorders Functional Genomics Psychiatric Genomics and Expression Profiling Single Cell Genomic DNA Analysis Sleep and Sleep States Gene Expression Sox Gene Expression Stress Response Genetic Consequences Thyroid Hormone and Transcriptional Regulation in the CNS Transcription and Reward Systems Transcription Control and the Circadian Clock Transcription Factors in Synaptic Plasticity and Learning and Memory Transcriptional Networks and the Spinal Cord Transcriptional Silencing VelociGene and VelociMouse High-Throughput Approaches for Generating Targeted Mutations in Mice on a Genome-Wide Scale 原書詞條中英對照錶
精彩書摘
Voltage-gated potassium channels have K+-selectivepores that are opened by membrane depolarization.This opening allows the movement of K+ ions acrossthe plasma membrane and the generation of K+ cur-rents that tend to repolarize the membrane towardthe equilibrium potential for K+ (EK). Voltage-gatedpotassium channels contribute widely to the electricalproperties of neurons. They influence subthresholdproperties, including the resting potential and mem-brane resistance. They influence the amplitude andfrequency of subthreshold oscillations, the responsive-ness of the cell to synaptic inputs, and the probabilityof spike generation. They help shape postsynapticpotentials, and they are the main determinants of therepolarization of the action potential governing spikeshape and frequency. Their voltage-dependent activityensures a non-ohmic current-voltage relationship,which thereby enables the channels to contribute tothe nonlinear properties of neurons. Voltage-gatedpotassium channels have similar functions in otherexcitable cells, including all varieties of muscle. In non-excitable cells, they contribute to the resting potentialand to the regulation of Ca2+ entry and secretion. Voltage-gated K+ channels differ dramatically intheir kinetic and voltage-dependent properties aswell as their cellular and subcellular distributions.This diversity is a main contributor to the varied elec-trical properties of neuronal populations throughoutthe nervous system. Thus, understanding the input-output relationship of neuronal elements demands thecontinued effort to study the properties and localiza-tion of these channels and analyze their physiologicalroles in native membranes.