EEG

Electroencephalography (EEG) is a non-invasive method to record electrical activity of the brain by surface electrode placed on scalp. It measures voltage fluctuations resulting from ionic current within the neurons of the brain. It offers millisecond-range temporal resolution that is much higher than other neuroimaging methods such as fMRI. Event-related potentials (ERP) is the brain electrophysiological response time-locked to specific sensory, cognitive or motor event. ERP components, e.g. P300, can be identified with respect to specific experimental paradigms and can be used to study various neural processes.

Specifications:
• Monopolar Channel Count: 64 Per Headbox, up to 256 Channels
• Bipolar Channel Count: 4 Per Headbox, 16 Per System Unit
• High Level Channel Count: 2 Per Headbox, 8 Per System Unit
• Maximum Sampling Rate: 20,000 Hz Per Channel all channels driven
• Sampling Method: All Channels Sampled Simultaneous
• Amplification Mode: Digital
• A/D Resolution: 24 Bit
• Input Impedance: 10 G ohms
• CMRR: 110dB
• Input Noise: 0.5uV RMS DC to 200Hz, 1.5uV RMS; Bandwith DC-3500Hz
• Bandwidth: DC to 3500 Hz
• Sensitivity (AC Mode): 3 nV/bit
• Digital (TTL) Inputs: 8 Bit Stimulus, 8 Bit Response TTL
• High Level Input Range: +/- 5 V
• Impedance Measurement: 1K Ohm to 200K Ohm
Applications:
• Cognitive neuroscience
• Electromagnetic source localization of brain activities
• Clinical neurophysiology
• Brain computer interface

Location: ZB217e, ZB217f

Charging rate for 256 channels (3 hrs per session):
PolyU Users (per session): $220
External Users (UGC-funded) (per session): $440
Other External Users (per session): $1100

Charging rate for 128 channels (2 hrs per session):
PolyU Users (per session): $110
External Users (UGC-funded) (per session): $220
Other External Users (per session): $550

Charging rate for 64 channels (1.5 hrs per session):
PolyU Users (per session): $60
External Users (UGC-funded) (per session): $120
Other External Users (per session): $300

To use, please go to the URFMS