The present disclosure relates to establishing bidirectional communication between a brain wave processing device and a vehicle to control at least one vehicle component of the vehicle. For this purpose, a brain-computer communication channel is provided between the brain wave processing device and the respective vehicle component. Subsequently, a control signal is determined as a function of a brain wave of the operator of the brain wave processing device and transmitted via the brain-computer communication channel to adapt at least one operating parameter of the respective vehicle component. This causes a change in the operating state of the respective vehicle component. Depending on this, an output signal is generated and is assigned to the change in the operating state of the vehicle component. This output signal is transmitted back to the brain wave processing device via the brain-computer communication channel and is output to the operator by means of an output unit of the brain wave processing device.

A mind-controlled switch is described, which comprises input circuitry for receiving mind state data from a first external device, an actuator, responsive to user actuation to set one or more threshold mind state values, and control circuitry for controlling a second external device in dependence on the mind state data and the mind state value(s). Notably, the mind-controlled switch is provided separately both from a first external device (which actually collects the mind state data from the user) and the second external device, which is the device being controlled by the switch. Accordingly, the second external device need not have its own mind-controllable functionality, but can instead be a conventional device which is imbued with this functionality by way of the separate mind-controlled switch.

A mind-controlled switch is described, which comprises input circuitry for receiving mind state data from a first external device, an actuator, responsive to user actuation to set one or more threshold mind state values, and control circuitry for controlling a second external device in dependence on the mind state data and the mind state value(s). Notably, the mind-controlled switch is provided separately both from a first external device (which actually collects the mind state data from the user) and the second external device, which is the device being controlled by the switch. Accordingly, the second external device need not have its own mind-controllable functionality, but can instead be a conventional device which is imbued with this functionality by way of the separate mind-controlled switch.

An electrophysiological monitoring system includes an electrophysiology amplifier chip configured to couple to a plurality of electrophysiological electrodes and to measure electrophysiological signals. The system also includes a computing device configured to receive and to process the electrophysiological signals. The system further includes an interface device coupled to the electrophysiological amplifier chip and the computing device, the interface device configured to convert communication signals between the computing device and the electrophysiology amplifier chip.

An electrophysiological monitoring system includes an electrophysiology amplifier chip configured to couple to a plurality of electrophysiological electrodes and to measure electrophysiological signals. The system also includes a computing device configured to receive and to process the electrophysiological signals. The system further includes an interface device coupled to the electrophysiological amplifier chip and the computing device, the interface device configured to convert communication signals between the computing device and the electrophysiology amplifier chip.

One variation of a system for locating electrodes on a head of a user includes a headset defining a set of electrode bodies elastically interconnected by a unique set of spring elements configured to locate the set of electrode bodies at electrode positions of the international 10-20 standard, irrespective of the size of the head of the user. The spring elements are configured to carry electrical signals between interconnected electrode bodies and ultimately to a controller. An electrode tip is mechanically and electrically coupled to each electrode body. The electrode tip comprises a thin conductive probe mounted at the distal end of an elastic beam and is configured to extend from a base of the electrode tip, bypass hair, and electrically couple to the head of the user, and an insulative boss, configured to rest on and transfer the weight of the headset to the head of the user.

One variation of a system for locating electrodes on a head of a user includes a headset defining a set of electrode bodies elastically interconnected by a unique set of spring elements configured to locate the set of electrode bodies at electrode positions of the international 10-20 standard, irrespective of the size of the head of the user. The spring elements are configured to carry electrical signals between interconnected electrode bodies and ultimately to a controller. An electrode tip is mechanically and electrically coupled to each electrode body. The electrode tip comprises a thin conductive probe mounted at the distal end of an elastic beam and is configured to extend from a base of the electrode tip, bypass hair, and electrically couple to the head of the user, and an insulative boss, configured to rest on and transfer the weight of the headset to the head of the user.

Disclosed are devices, electrodes, systems, methods, and other implementations, including a subdural sound that includes an elongated body configured to be placed within a subdural space of a brain area of a patient, with the elongated body defining a receiving channel to receive a displaceable electrode to be tangentially placed at a target site in the subdural space. The subdural sound further includes a curved tip at a distal end of the elongated body, the curved tip configured for angled insertion into the subdural space of the patient to advance the elongated body to the target site in the subdural space.

A semi-dry electrode combines advantages of wet electrodes and dry electrodes by use of a rotatable ball to apply a conductive gel at the tip of the electrode in a manner similar to how a ballpen applies ink. A reservoir in the semi-dry electrode contains the conductive gel that is applied by the ball to the skin of the user. This creates a thin film of conductive gel at the tip of the semi-dry electrode which reduces impedance and increases the signal-to-noise (SNR) ratio. Directly applying the conductive gel from within the electrode itself reduces mess and improves user convenience. The semi-dry electrode may be used in a lightweight electroencephalography (EEG) monitoring device to detect brain activity. The brain activity may be used as input for a brain-computer interface (BCI).

A semi-dry electrode combines advantages of wet electrodes and dry electrodes by use of a rotatable ball to apply a conductive gel at the tip of the electrode in a manner similar to how a ballpen applies ink. A reservoir in the semi-dry electrode contains the conductive gel that is applied by the ball to the skin of the user. This creates a thin film of conductive gel at the tip of the semi-dry electrode which reduces impedance and increases the signal-to-noise (SNR) ratio. Directly applying the conductive gel from within the electrode itself reduces mess and improves user convenience. The semi-dry electrode may be used in a lightweight electroencephalography (EEG) monitoring device to detect brain activity. The brain activity may be used as input for a brain-computer interface (BCI).