Facility Details

Our facility houses a state –of the art a 306-channel whole-head MEG system (TRIUX, Neo, MEGin) and 128 channels -EEG amplifier.MEG helmet does coverage for whole cortex, 1220 cm2. MEG system has three measurement positions:supine, lower and upper seated. MEG sensors are divided into two types: 102 identical plug-in triple sensors units with two orthogonal planner gradiometers flux transformers, one magnetometer flux transformer and three dc-SQUIDs (Super-conducting QuantumInterference Devices). Size of gradiometers is 28mm x 28 mm, size of magnetometers is 21 mm x 21 mm. The MEG system is housed within magnetic shielded room (MSR) equipped with active shielding and automated helium recycler. The electronics comprises 306 MEG channels, 12 bioamplifier channels (SAM) and 128 EEG channels. Both MEG and EEG can be recorded simultaneously, with analog high-pass filter cut-offs dc/ 0.03 Hz /0.1 Hz/ 10 Hz (-3dB corner frequency), selectable individually for each channel by software. Low passfiltering by data acquisition software. MEG system is equipped with stimulation systems (for auditory, visual, motor and sensory tasks and intercom option with microphone). For the task–related response, we have non-magnetic single-fingeroptical response pad: finger-press more, finger-lift more and trigger output. For visual stimulation, we have high -fidelity video projection system, three -panel DLP video projector, 1,400 x 1,050-pixelnative resolution, 16-bit color depth, 112 cm screen on wheels. For auditory stimulation we have non-magnetic tubal-insert earphone set, independent delivery of auditory stimuli to each ear, 80 dB pressure level, >50 dB channel separation, <1 ms jitter between triggers and stimulus onset.3D digitizer (Polhemus Fastrack) is used for the head shape recordings. For subjects/patient support, the MEG lab is equipped with subject chair, subject bed and pediatric chair. Data analysis can be performed on three LINUX workstations.