Digital EEG Mapping

Feasures:

10-20 Standard EEG Lead System

Observe and record EEG simultaneously

Dynamic 3D rotated brain relief mapping

Flash Stimulation

Audio Stimulation

Adopting Large Scale Integrated circuit (LSI) and improved anti-jam capability.

Doubly isolated the power supply and brain electrical signal to prevent creepage and to insure security.

Function of various event description such as open or close eyes, deep breathing and photic stimulation

Arbitrarily set lead modes such as monopole, dual-pole and reference electrode

Choose any lead to enlarge and automatically measure

Auto-replay EEG wave and real-time compressed chart-array map

Arbitrarily choose histogram, graph, and graph and percentage map

Continuously replay spike wave relief map and dynamic 3D rotated relief mapArbitrarily set digital filtering, formfeed speed, gain, transmission bands and time constant settings

Self-contained medical records management system and manifold report patterns

Windows 7/Vista operating system, easy to operate

Optional multi-parameter leads of ECG, EMG, EOG, Resp. etc.

Technical parameter:

Voltage measurement: 25mV to 200mV, error range: ±10%.

Time interval: error range is no more than ±5.

Time constant: 0.03s to 0.1s, error range: ±40%; the error range is no more       than±20% when the time constant ≥0.1s.

Amplitude-frequency characteristic: 1Hz to 30Hz, deviation range: +5% to -30%.

Power spectrum amplitude: error range: ±10%.

Power spectrum frequency: deviation range: ±5%.

Noise level: ≤5µVp-p (peak to peak value).

CMRR (Common mode rejection ratio): each lead ≥80dB.

Polarizing voltage endurance: voltage error range is no more than ±5% when added   ±300mV direct current polarizing voltage.