A method for functional brain mapping using high gamma modulation obtained from stereoelectroencephalography (SEEG).

This document discusses a medical system for coupling to one or more implantable electrodes. The medical system includes a sensing circuit, memory, and processing circuitry. The sensing circuit is configured to sense one or more neural signal representative of neural activity of a subject when connected to an implantable electrode of the one or more implantable electrodes, and the memory is to store a reference signal that is representative of a neural response associated with a state of arousal at or near an anatomical location of the implantable electrode. The processing circuitry is configured to compare the one or more sensed neural signals to the reference signal, and to determine a depth of anesthesia of the subject according to the comparison of the one or more sensed neural signals and the reference signal.

Methods and systems for improved removal of deep brain stimulation artifacts from electrical measurements of brain activity. In one embodiment, a method is provided that includes: receiving, by a computing device having a processor, waveform data caused by a deep brain stimulation of a patient-specific area of interest; determining, by the computing device, a stimulation period relative to a sampling rate; identifying, by the computing device and based on the waveform data and the stimulation period, a stimulation artifact; subtracting, by the computing device, the identified stimulation artifact from the received waveform data; and generating, in real-time, a filtered waveform data indicating an absence of the stimulation artifact.

Methods and systems for improved removal of deep brain stimulation artifacts from electrical measurements of brain activity. In one embodiment, a method is provided that includes: receiving, by a computing device having a processor, waveform data caused by a deep brain stimulation of a patient-specific area of interest; determining, by the computing device, a stimulation period relative to a sampling rate; identifying, by the computing device and based on the waveform data and the stimulation period, a stimulation artifact; subtracting, by the computing device, the identified stimulation artifact from the received waveform data; and generating, in real-time, a filtered waveform data indicating an absence of the stimulation artifact.

The present invention relates to an electrode, which is an in vivo insertable electrode, including a substrate, an electrically conductive layer formed on the substrate, a platinum black layer formed on the electrically conductive layer, a self-assembled monolayer (SAM) formed on the platinum black layer, and a lubricant layer formed on the SAM, a method of manufacturing the electrode, and a medical device including the electrode. The in vivo insertable electrode according to the present invention provides excellent electrical properties such as low impedance. Further, it shows that friction with tissue occurring when the electrode is inserted is reduced, and trauma during insertion and an immune rejection response after insertion is suppressed. Further, in the long term, it is possible to detect signals with high sensitivity throughout the entire period by preventing bioadhesion of in vivo cells, such as immune cells, and other proteins.

Provided are methods comprising presenting a sensory environment to an individual experiencing the effects of a psychoactive agent, monitoring the neural status, the physiological status, or both, of the individual, and presenting a modified sensory environment to the individual based on the monitoring. In certain embodiments, the agent is a psychedelic agent. According to some embodiments, presenting a sensory environment to the individual comprises presenting to the individual a visual stimulus, an auditory stimulus, a tactile stimulus, an olfactory stimulus, or any combination thereof. In certain embodiments, presenting a modified sensory environment to the individual comprises presenting a customized sensory environment to the individual in real-time based on the monitoring. In some embodiments, the individual is suffering from a mental health condition selected from depression, anxiety, post-traumatic stress disorder (PTSD), addiction, and any combination thereof. Systems that find use in practicing the methods of the present disclosure are also provided.

Disclosed herein are methods and systems for transient-based decoding of neural signals. In one aspect, a device such as a brain-computer interface (BCI), includes at least one processor configured to receive a plurality of neural signals from a subject. The at least one processor can detect, from the plurality of neural signals, first neural activity unique to a first defined temporal window corresponding to an onset phase of an intended action of the subject. The at least one processor can detect, from the plurality of neural signals, second neural activity unique to a second defined temporal window, occurring after the first temporal window and corresponding to an offset phase of the intended action. The at least one processor can generate at least one output indicative of the intended action, responsive to detecting at least one of the first neural activity or the second neural activity.

A system for performing functional brain mapping includes a memory configured to store first data from a magnetic resonance imaging (MRI) system and second data from electrodes. The system also includes a processor operatively coupled to the memory and configured to identify first edges in a brain network based on the first data from the MRI and second edges in the brain network based on the second data from the electrodes. The processor is configured to determine, based on the first edges and the second edges, connectivity metrics for the brain network. The processor is also configured to generate, based at least in part on the connectivity metrics, a decoder that differentiates between critical nodes and non-critical nodes in the brain network.

Disclosed is a stent-mesh and microelectrode assembly that is deployable using a catheter or cannula to form a neural interface for recording and/or stimulation of neural tissue. In some embodiments, the assembly may include a thin-film microelectrode array attached to a spring-like stent-mesh component. The thin-film microelectrode array may include an electrode body having two lateral wing-like appendages located distal to a thin-film flexible cable that terminates at the proximal end in a thin-film connector region. The stent-mesh may be attached to the thin-film microelectrode array and configured to be advanced to a target area in a collapsed state and then expanded after reaching the target area to transition the thin-film microelectrode array to a deployed configuration. Accordingly, the assembly may deliver the thin-film microelectrode array to a target area in a minimally invasive manner.

Devices and methods are described for a minimally invasive procedure offering immediate relief of brain compression and prevention of subdural hematoma re-accumulation. For example, this disclosure describes devices and methods for embolization of bleeding branch vessels of the middle meningeal artery and subdural hematoma drainage in a single endovascular intervention using multimodal catheter-based technology.