Wearing the Actiwaves
The Actiwave range is designed to be small enough to be worn on the body close to the required recording site. CamNtech can supply a range of holders which can be used to wear the Actiwave range or alternatively they can be worn either using skin glue or tucked into a bandage on the back of the neck.
There are standard placements for a 3 and 5 lead ECG as shown in the diagrams below. A three lead ECG recording can be made using an Actiwave EEG/ECG 2 device and a 5 lead ECG recording using an Actiwave EEG/ECG 4 device.
4 Channel Actiwave shown set-up for a 5-lead ECG
Generally the EMG is measured along the muscle and the signal level will vary according to distance between the pads. There are two main types of electrode for measuring EMG: surface and needle. The needle electrodes give a small very local signal from within the muscle. Surface electrodes are the more common type and give a larger 'averaged' signal. Electrodes require 1mm connectors in order to be used with the Actiwave range. Please see the section below on Electrodes for more details.
The Actiwave range is ideal for measuring EEG in ambulatory subjects. It can also be used to measure EEG in patients who would not tolerate full PSG, such as dementia patients. The Actiwave can be worn on the back of the neck tucked into a bandage to provide effective unobtrusive mounting for EEG recording.
CamNtech are able to supply a full range of EEG, ECG and EMG electrodes for all applications. These include EEG electrodes from Pactronic and ECG/EMG electrodes from Pulse Medical. For full details please contact us. Alternatively please see the following websites:
Pulse Medical: pulsemedical.co.uk