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This study describes a microinjection technique that allows for the acute manipulation of individual neural stem cells in organotypic slice cultures via direct delivery of biologically active molecules.
The authors describe the design of an optetrode, a device that allows for colocalized multi-tetrode electrophysiological recording and optical stimulation in freely moving mice.
This technical report describes a 360-channel flexible multi-electrode array with high spatial resolution, wide coverage area and minimal damage to the recorded neural tissue. Among other descriptions of multiunit in vivo neuronal recording in cats, the authors also use the electrode array to show spiral-patterned spread of epileptic neural activity in the neocortex.
The authors describe a chemical approach for imaging deep into fixed brain tissue using Scale, a solution that renders biological samples transparent, but preserves fluorescent signals. This technique allows for imaging at unprecedented depth and at subcellular resolution, and makes three-dimensional reconstruction of neural networks possible without serial sectioning.
Two-photon calcium imaging has previously only been useful for imaging ongoing neuronal activity in the superficial cortical layers in vivo. Here the authors describe technology that enables imaging of sensory-evoked neuronal activity in layer 5 of adult mouse somatosensory cortex.
This Technical Report describes an automated algorithm to trace densely labeled neurons and reconstruct their structure, thus providing a new tool in functional connectome analysis.
In this Technical Report, Kleinlogel and colleagues created and characterized a new channelrhodopsin-2 mutant with an enhanced permeability to calcium. Dubbed CatCh (calcium translocating channelrhodopsin), this new variant's enhanced calcium permeability mediates an accelerated response time and voltage response that is ~70-fold more light sensitive than that of wild-type channelrhodopsin-2.
This paper reports an in vivo imaging method that monitors real-time synaptic transmission simultaneously at many release sites with quantal resolution. The authors demonstrate the utility of this technique by using it to study the glutamatergic system of Drosophila larval NMJ.
The authors describe a technique for delivering DNA vectors through a patch-pipette following characterization of the neuron by whole-cell recording. They demonstrate the utility of the approach by mapping the synaptic and anatomical receptive fields of several visual cortical neurons.
Here the authors describe a set of new optogenetic tools for use in primates that are meant to address the unique constraints of working with this species. They characterize opsin expression, the reliability of optogenetic stimulation and its effect on behavior, and methods for determining localization and expression levels prior to the completion of experiments.
Szuts et al. have developed a wireless neural recording system that outperforms existing rodent telemetry systems in either channel count, weight or transmission range. They show that it can be used to record brain signals in animals outdoors and in tunnels.
