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 Visor Features and Benefits 
 
System		 
 
  • Mobile high-performance TMS navigation system with EEG/ERP/EMG integration (optional, for research only)
  • Dedicated cart with highly flexible arms for camera and monitor (optional wall-mounting)
  • Wide-range NDI Spectra/Vicra infrared camera system with typical accuracy of 2 mm
 
  • Compatible with a variety of standard and custom TMS coils
  • No head fixation necessary due to automatic head movement compensation
  • Quick and easy calibration of coils; validation of correct coil/tool positioning
 
 
Integration with EMG and EEG		 
 
  • Visor fully integrates TMS neuronavigation with ASA-Lab for EMG motor mapping and EEG recording in one system
  • Motor evoked potential can be recorded with ASA-Lab for each stimulated point and are projected in real-time onto the brain in order to create corresponding EMG amplitude maps
 
  • WaveGuard cap and amplifier technology allow simultaneous measurement with minimal impact of TMS artifacts on EEG
  • Whenever necessary, TMS artifact correction can be applied to compensate stimulation artifacts. EEG averaging, spectral 3D mapping, time-frequency analysis, and EEG source reconstruction can be applied to reveal information about the underlying brain activity
 
 
TMS Neuro Navigation		 
 
  • Co-registration with MRI (DICOM, ANALYZE, NIFTY) using anatomical landmarks
  • Forward field calculation of TMS focus using realistic head model to visualize the expected activation of brain tissue
  • Simultaneous visualization of MRI and fMRI (slices, freely rotating cutting planes, 3D regions, rendered compartments, and curvilinear displays) and EEG/ERP/EP (maps, head model, sensors, 3D inverse solutions) during navigation
  • Sophisticated display of induced brain activation in freely rotating cutting planes as well as in curvilinear maps
 
  • Simultaneous visualization of pointer and up to two stimulation coils in real-time
  • Display of MRI slices is adjusted on-the-fly to show the point of navigation (digitizer pen, stimulation coils)
  • All parameters of the TMS stimulation session are stored so that it can be easily reproduced, reviewed and reported
 
 
Targeting		 
 
  • Intuitive target view: accurate and fast positioning of coils over desired stimulation
  • target (indicating distance to target and orientation of coil relative to desired orientation) Interactive placement of markers for back-tracing of positions (e.g. in Talairach coordinate frame)
 
  • Define new targets for stimulation based on MRI, fMRI, ERP source analysis results, and dipoles. Alternatively, use pointer to set a target or simply enter coordinates