Ramon Garcia-Cortadella

TL;DR: This work uses flexible epicortical and intracortical arrays of graphene solution-gated field-effect transistors (gSGFETs) to map cortical spreading depression in rats and demonstrates that gSGFETS are able to record, with high fidelity, infraslow signals together with signals in the typical local field potential bandwidth.

TL;DR: In this article, the operation of solution-gated field-effect transistors (SGFETs) and characterizing their performance in saline solution were discussed and compared with the performance of state-of-the-art neural technologies.

TL;DR: The concept of frequency-division multiplexing (FDM) of neural signals by graphene active sensors is presented, and a new generation of conformal neural probes with over a thousand channels for high bandwidth brain machine interfaces is envisioned.

TL;DR: In this article, the performance of 64-channel graphene sensor arrays in terms of homogeneity, sensitivity and stability using a wireless, quasi-commercial headstage and demonstrate the biocompatibility of epicortical graphene chronic implants.

TL;DR: This work demonstrates the use of a flexible array of graphene solution-gated field-effect transistors (gSGFET), exploring the concept of multiplexed readout using an external switching matrix, paving the way for upscaling the gSGFETS technology towards large-scale, high-density μECoG–arrays, eventually capable of resolving neural activity down to a single neuron level, while simultaneously mapping large brain regions.