Author Archives: Neural Engineering Lab

16-channel micro-electrocorticography (micro-ECoG) grid of nonpenetrating microwires, used to record millimeter scale local field potentials from the cortical surface.

Decoding spoken words

Decoding spoken words using local field potentials recorded from the cortical surface

Communication in patients with “locked-in syndrome” is often an arduous task. Intuitive and rapid communication may be restored by directly interfacing with language areas of the cerebral cortex. We used a grid of closely spaced, nonpenetrating micro-electrodes to record local field potentials (LFPs) from the surface of face motor cortex and Wernicke’s area. From these LFPs we successfully classified a small set of words on a trial-by-trial basis at levels well above chance, demonstrating that this approach can be used to potentially restore communication to locked-in patients. Go to PubMed

When implanted in the brain, the Utah Electrode Array (UEA) can record action potentials and local field potentials, and be used for micro-stimulation of neural tissue.

Electrodes detect finger movement

Detection and classification of multiple finger movements using a chronically implanted Utah Electrode Array

This work demonstrates a decoding method that can detect and classify finger movements without any a priori knowledge of the data, task, or behavior, and lend further support that a chronically implanted Utah Electrode Array is suitable for both acquiring and decoding neuronal data. Go to PubMed