A cortical access system for delivering a medical tool into an epidural and/or subdural space and onto a patient's brain tissue through a cranium opening comprises: a turret including a proximal end portion, a distal end portion, and a first channel extending from an entrance opening to an exit opening, the first channel configured to guide the medical tool from the entrance opening to the exit opening for positioning on the patients brain tissue. The medical tool may be an electrode or an endoscope.

A mote includes an optical receiver that wirelessly receives a power and data signal in form of NIR light energy within a patient and converts the NIR light energy to an electrical signal having a supply voltage. A control module supplies the supply voltage to power devices of the mote. A clock generation circuit locks onto a target clock frequency based on the power and data signal and generates clock signals. A data recovery circuit sets parameters of one of the devices based on the power and data signal and a first clock signal. An amplifier amplifies a neuron signal detected via an electrode inserted in tissue of the patient. A chip identifier module, based on a second clock signal, generates a recorded data signal based on a mote chip identifier and the neuron signal. A driver transmits the recorded data signal via a LED or a RF transmitter.

A mote includes an optical receiver that wirelessly receives a power and data signal in form of NIR light energy within a patient and converts the NIR light energy to an electrical signal having a supply voltage. A control module supplies the supply voltage to power devices of the mote. A clock generation circuit locks onto a target clock frequency based on the power and data signal and generates clock signals. A data recovery circuit sets parameters of one of the devices based on the power and data signal and a first clock signal. An amplifier amplifies a neuron signal detected via an electrode inserted in tissue of the patient. A chip identifier module, based on a second clock signal, generates a recorded data signal based on a mote chip identifier and the neuron signal. A driver transmits the recorded data signal via a LED or a RF transmitter.

A transparent flexible bio-electrode and a method for manufacturing the same are provided. The transparent flexible bio-electrode includes a substrate, electrode sites disposed at one side on the substrate, electroconductive contacts disposed at the other side on the substrate, and an interconnector configured to connect the electrode sites and the contacts.

Example embodiments described in this disclosure are generally directed to detecting drowsiness in a driver of a vehicle. In an example method, a driver drowsiness detection system receives a motor cortex signal from a brain activity monitoring element attached to the driver. The brain activity monitoring element can be a cortical implant, for example. The driver drowsiness detection system evaluates the motor cortex signal to identify an anatomical part of the driver (eyes, for example) that is associated with a brain activity. The driver drowsiness detection system then uses a drowsiness detection device placed in the vehicle for evaluating a physical activity of the anatomical part. The evaluation may be carried out by using a camera directed upon the driver's eyes, for example. The driver drowsiness detection system determines a drowsiness state of the driver based on the evaluation and assigns a sleep risk score.

Devices, systems, and techniques are disclosed for managing electrical stimulation therapy and/or sensing of physiological signals such as brain signals. For example, a system may assist a clinician in identifying one or more electrode combinations for sensing a brain signal. In another example, a user interface may display brain signal information and values of a stimulation parameter at least partially defining electrical stimulation delivered to a patient when the brain signal information was sensed.

Devices, systems, and techniques are disclosed for managing electrical stimulation therapy and/or sensing of physiological signals such as brain signals. For example, a system may assist a clinician in identifying one or more electrode combinations for sensing a brain signal. In another example, a user interface may display brain signal information and values of a stimulation parameter at least partially defining electrical stimulation delivered to a patient when the brain signal information was sensed.

Devices, systems, and techniques are disclosed for managing electrical stimulation therapy and/or sensing of physiological signals such as brain signals. For example, a system may assist a clinician in identifying one or more electrode combinations for sensing a brain signal. In another example, a user interface may display brain signal information and values of a stimulation parameter at least partially defining electrical stimulation delivered to a patient when the brain signal information was sensed.

Devices, systems, and techniques are disclosed for managing electrical stimulation therapy and/or sensing of physiological signals such as brain signals. For example, a system may assist a clinician in identifying one or more electrode combinations for sensing a brain signal. In another example, a user interface may display brain signal information and values of a stimulation parameter at least partially defining electrical stimulation delivered to a patient when the brain signal information was sensed.

A system and method is provided for imaging and monitoring a tissue, such as a cerebral cortex, of a subject. Access to imaging a tissue, such as cerebral cortex, may be provided by removing a portion of a bone, such as a portion of a skull of the subject. A prosthesis, such as an optically transparent prosthesis, may be used to replace the portion of the skull removed and may be conformed to the same 3D contour of the bone that was removed. A data acquisition system, such as an imaging system, may then be affixed to the skull prosthesis and may be used to acquire image data of the tissue of the subject at high spatial and temporal resolution and without interference from intervening bone material.