Low threshold Ca2+ currents mediated by T-type channels underlie burst spike activities of relay neurons in the thalamus. We have previously reported that knock-out mice for T-type channels show an enhanced nociceptive response to visceral pain, accompanied by an increase in tonic spikes in the absence of burst spikes in thalamic relay neurons. These results raised a possibility that T-type cha...

Behavioral output of neural networks depends on a delicate balance between excitatory and inhibitory synaptic connections. However, it is not known whether network formation and stability is constrained by the sign of synaptic connections between neurons within the network. Here we show that switching the sign of a synapse within a neural circuit can reverse the behavioral output. The inhibitor...

In order to improve the design of Li ion batteries the complex interplay of various physical phenomena in the active particles of the electrodes and in the electrolyte has to be balanced. The separate transport phenomena in the electrolyte and in the active particle as well as their coupling due to the electrochemical reactions at the interfaces between the electrode particles and the electroly...

ClC chloride channels orchestrate the movement of chloride necessary for proper neuronal, muscular, cardiovascular, and epithelial function. In this issue of Neuron, Jentsch, Pusch, and colleagues use the structure of a bacterial ClC homolog to guide a mutagenic analysis of inhibitor binding to ClC-0, ClC-1, and ClC-2.

Despite extensive biophysical characterization and the superb example of the bacterial MscL channel, molecular identification of eukaryotic mechanosensitive channels has been slow. New members of the TRP superfamily have emerged as candidate channels to mediate touch, hearing, fluid flow, and osmosensation in sensory and nonsensory cells. Distinguishing between direct mechanical activation and ...

Fast gating is a unique property of chloride channels, where a permeating Cl(-) ion acts as its own ligand in opening the channel. The glutamate residue implicated in fast gating normally carries a unit negative charge. Whether this charge needs to be protonated to enable permeation of a Cl(-) ion is an important question that will affect how models of chloride channels are constructed. We inve...

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