3D microelectrode cluster and stimulation paradigm yield powerful analgesia without noticeable adverse effects

The dataset contains the underlying data for the figures in the paper "3D microelectrode cluster and stimulation paradigm yield powerful analgesia without noticeable adverse effects" by M. Forni et al., Science Advances, 2021. In the reported study, we present a newly developed biocompatible gelatin-embedded cluster of microelectrodes that enable higly customizable stimulation in the periaqueductal gray/dorsal raphe nucleus in awake rats. We were able to select a subset of electrodes for each individual, that upon stimulation provided significant pain inhibition during both normal and hyperalgesia conditions, without noticable side effects.

Pain responses were quantified in terms of evoked field potentials (FP) and neuronal activity (z score), as well as withdrawal rate (WR) resulting from stimulating the skin with either a CO2-laser or a tactile stimulator, and analyzed with respect to multiple variables, such as time from stimulation onset, effect in comparison to morphine administration etc. Also, the effects of stimulation were quantified in terms of gait parameters (speed and paw-usage symmetry).

The location of implanted electrodes was verified using computed tomography (CT) imaging and superimposition to the Waxholm brain atlas. The dataset contains the CT images for each anaimal, as obtained after alignment to the atlas.

Methods
See methods section of the paper "3D microelectrode cluster and stimulation paradigm yield powerful analgesia without noticeable adverse effects" by M. Forni et al.