Plazma 
            has been developed to provide a multisensory environment (sound & 
            images) for profoundly disabled people to explore. In some ways it 
            is like the Ameba, but in many ways Plazma 
            is less complicated to understand.
            
          This 
            package has been produced with a focus towards children. However, 
            you should find it to be useful with adults too!
            
          Plazma 
            can be controlled by many different devices - all at the same time!
            -Switches plugged into your PC will work (up to 10). These need to 
            be switches that either press mouse buttons or generate keystrokes 
            between 0 and 9.
            -It also works really well using a mouse (including Head Mice) or 
            Touch Screen. It is especially good with a Trackerball.
            -A microphone plugged in will find Plazma responding to both volumes, 
            fricative sounds (such as "sh" and "s") and also 
            pitch.
            -A standard games joystick, gamepad or steering wheel will give many 
            options as users press the different buttons and move the cursor.
            
          Sometimes 
            things happen when you press a switch, sometimes when you release, 
            and sometimes when you hold it down. Moving the cursor (even if you 
            can't see it) always produces a result. You can even press several 
            switches/buttons/keys together!