ElectroCardioGram (2-3 lead ECG)

Electrocardiography (ECG or EKG from the German Elektrokardiogramm) is a transthoracic (across the thorax or chest) interpretation of the electrical activity of the heart over a period of time, as detected by electrodes attached to the outer surface of the skin used to test the electrical activity of the heart. ECG is used to measure the rate and regularity of heartbeats as well as the size and position of the chambers, the presence of any damage to the heart, and the effects of drugs or devices used to regulate the heart (such as a pacemaker).

VitaMove can be used as a conventional holter monitor for periods upto a week, but allows the caregiver to see what the patient or client was doing at the moment the event occurred. From the ECG the heart rate is derived. The heart rate is the number of heartbeats per unit of time, typically expressed as beats per minute (bpm). Heart rate can vary as the body’s need to absorb oxygen and excrete carbon dioxide changes, such as during exercise or sleep. The heart rate measurement is used by medical professionals to assist in the diagnosis and tracking of medical conditions. It is also used by individuals, such as athletes, who are interested in monitoring their heart rate to gain maximum efficiency from their training.  From the heart rate the heart rate variability (HRV) can be calculated to evaluate mental stress. Normal Ag, Ag/Cl pre-gelled disposable ECG electrodes are used.

ElectroEncephaloGraphy (EEG)

EEG records electrical activity along the scalp. In neurology, the main diagnostic application of EEG is in the case of epilepsy, as epileptic activity can create clear abnormalities on a standard EEG study. EEG can be a valuable tool for research and diagnosis, especially when millisecond-range temporal resolution (not possible with CT or MRI) is required.

ElectroOculoGraphy (EOG)

An EOG measures the resting potential of the retina. The resulting signal is called the electrooculogram. The main applications are in ophthalmological diagnosis and in recording eye movements. Usually, pairs of electrodes are placed either above and below the eye or to the left and right of the eye. If the eye is moved from the center position towards one electrode, this electrode “sees” the positive side of the retina and the opposite electrode “sees” the negative side of the retina. Consequently, a potential difference occurs between the electrodes. Assuming that the resting potential is constant, the recorded potential is a measure for the eye position.

ElectroMyoGraphy (EMG)

EMG is a technique for evaluating and recording the electrical activity produced by skeletal muscles. An EMG detects the electrical potential generated by muscle cells when these cells are electrically or neurologically activated. The signals can be analyzed to detect medical abnormalities, activation level, recruitment order or to analyze the biomechanics of human or animal movement.

Technical

Number of channels : 2 (per VMExG amplifier)
AC input range : 16mVpp
DC input range : -320mV to + 340mV
Low pass filter : 120 Hz
High pass filter : 530mHz
CMRR : >120dB (0 Ohm electrode impedance)
Input impedance : Typ. 10¹³ || 3 Ohm
Sample rate : 256 Hz (per channel)
Resolution : 16bit

Connectivity
VitaMove recorder connector : 5 pole
ExG input 1 : Ground
ExG input 2 : – / ECG_LL / M1
ExG input 3 : + / ECG_RA / Fp1
ExG input 4 : + / ECG_LA / Fp2
Respiratory sensor input : yes
Light sensor input : yes