SVI Video Demonstrations SVI Features Explore some of the unique features and benefits of the SVI system Five Categories Each category features several specific activities. Selectable Modalities Provides immediate feedback using both auditory and visual stimuli. Selectable Parameters Allows you to quickly modify the visual demands. Touch Activated Rotator Several visual abilities addressed in the Rotator program. Programmable Metronome Provides immediate feedback using both auditory and visual stimuli. TachistoscopeStimuli includes numbers,letters and words. Numbers / Letters / Word Saccades Enhance skills in saccadic accuracy and help enhance automaticity. Visual Motor Expansion Module Several visual abilities are addressed. New Graphing Feature Allows you to track and document results over time. Charts Expansion Module Provides several programmable chart targets. Eye-Hand Measure and address Eye-Hand Coordination & Visual Reaction Timing.