[visionlist] VEP Near Stimulation

[Larry Baitch]

Colleagues:

Is anyone aware of a evoked potential visual stimulator (reversing 
checkerboard or other pattern) that employs an Apple iTouch, iPad or 
other similar hand-held device for visual stimulation?  I'm imagining 
that it would have an APP that can change spatial frequency and 
contrast, and has a TTL signal out for triggering of data acquisition. 
None of the vendors at ARVO have developed one.

Larry Baitch

[Apologies for cross-posting]