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Home | Diagnosys LLC Products | Pattern Stimulator

Pattern Stimulator

The powerful Pattern Stimulator option brings monochrome and color VEP and PERG capabilities to the E2 diagnostic suite. Stimulus pattern, size, frequency, contrast and color are all computer controlled and all displays are fully gamma corrected for accurate stimulation.

Diagnosys offers two different pattern stimulators; one aimed primarily at the clinical market (PSG) and the other at the research market (FSG), although both are more than capable of providing the full ISCEV set of stimuli.

Pattern Stimulator Detailed Specifications





Download More Information (PDF) DOC # 11881 Rev B / Product D143


Diagnosys Complete Product List



Pattern Stimulator Accessories

OptiCal Photometer Part Number: D138


IL1700 Photometer Part Number: D135

Features / PSG – Pattern Stimulus Generator / FSG – Framestore Stimulus Generator / ISCEV Tests /
Features
  • Calibrated luminance and color
  • Max resolution of 1600*1200
  • Variable Frame Rate
  • 8 bit Color control
  • 8 bit to12 bit luminance control (FSG)
  • Pattern Generator supports any monitor FSG)
  • Fully programmable with onboard processor and memory (FSG)
  • 22” super bright CRT color monitor included
  • Luminance > 100 cd/m2 (depending on monitor)
  • ISCEV Standard Tests Included

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    PSG – Pattern Stimulus Generator

  • Checkerboards, bars, gratings as standard with 5 pixel resolution
  • Optional partial checkerboard square removal
  • Full field, half field, quarter field patches
  • Variable size/color/type fixation spot (center only)
  • Full control of reversal rate and onset/offset with frame accuracy
  • Adjustable trigger timing
  • 8 bit Color/luminance control
  • Calibrated luminance and color
  • Resolutions fixed at 800*600
  • Frame rates 92/100Hz
  • No framestore memory, all patterns created in real time
  • External box fitted for Espion2

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    FSG – Framestore Stimulus Generator

  • Checkerboards, bars, gratings as standard with single pixel resolution
  • Optional partial checkerboard square removal
  • Full field, half field, quarter field patches, arbitrary patch size/position
  • Variable size/color/type fixation spot
  • Gratings in any orientation
  • Full control of reversal rate and onset/offset with frame accuracy up to half frame rate
  • Adjustable trigger timing
  • 10 bit Color/luminance control
  • Calibrated luminance and color
  • Adjustable monitor timing
  • Resolution up to 1600*1200
  • Programmable Frame rates
  • Arbitrary stimulus shapes
  • Based on framestore memory
  • External accessory for Espion2
  • User defined stimuli possible

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    ISCEV Tests

  • Pattern Reversal (VEP)
  • Pattern Onset/Offset
  • Pattern ERG (PERG)

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