Neuro-ERG

4-channel digital ERG system

           PDF-file
           (zip-archive 1,08 Mb)

USB connection

ISO 9001 quality certificate

ISO 13488 quality certificate

CE conformance certificate

Certificates of conformance to CIS requirements

 

 

 

 

 

General Properties • Techniques • Delivery Set • Specifications

Neuro-ERG corresponds to ISCEV (International Society of Clinical Electrophysiology of Vision) standards.

Neuro-ERG General Properties 

Electroretinography (ERG):

·                   registration of the rod and maximal ERG in dark-adapted eye

·                   registration of cone ERG in light-adaptated eye by using white, red, green and blue stimulators

·                   local ERG registration by using spot LED stimulators (penlights) with concentrators for diagnostics of central disorders

·                   rhythmical ERG registration with arbitrarily set stimulation frequency

·                   pattern-ERG registration for the ganglionary cell state assessment

·                   on/off ERG registration for study of retina structure response on long stimulus

·                   oscillatory potentials registration in light- and dark-adaptated eye

Visual Evoked Potentials (VEP):

·                   registration of flash and pattern (chess, vertical/horizontal stripes or arbitrarily generated image) visual evoked potentials and "onset"/"offset" stimulation

·                   registration of rhythmical visual evoked potentials (steady-state) with arbitrary set stimulation frequency

Electro-Oculography:

·                   registration of base, light peak and dark trough potentials

Neuro-ERG Techniques 

 

 

 

 

 

Rod electroretinography

 

 

 

 

 

 

 

 

Cone electroretinography

 

 

 

 

 

 

 

 

Maximal electroretinogram

 

 

 

 

 

 

 

 

Rhythmical electroretinography

 

 

 

 

 

 

 

 

Local electroretinography

 

 

 

 

 

 

 

 

Simultaneous registration VEP and reversal pattern ERG

 

 

 

 

 

 

 

 

VEP, reversal pattern

 

 

 

 

 

 

 

 

Checkup report

 

 

 

 

Neuro-ERG Delivery Set 

·                   Neuro-MEP amplifier unit with a holder

·                   Neuro-MEP auditory-visual stimulator unit

·                   USB-hub

·                   Cup EP electrode with a cable – 5 pcs.

·                   Set of electrodes for ERG registration:

o                            corneal "loop" electrode – 25 pcs.

o                            corneal "hook" electrode – 5 pcs.

o                            adapter for corneal electrode connection

o                            ear electrode with a cable – 2 pcs.

·                   Forehead and chin support assembly

·                   Visual stimulator (LED goggles)

·                   Visual pattern-stimulator (monitor 17")

·                   Penlights with concentrators (red, blue, green, white) with a holder

·                   Mini-ganzfeld stimulator

·                   Abrasive paste for skin preparation

·                   Electrode adhesive paste

·                   Ophthalmologic conductive gel

·                   CD with software

·                   User and technical manuals

·                   Transportation bag

 

 

 

 

 

Neuro-ERG Specifications 

Neuro-ERG Amplifier:

Number of channels

4

Sampling rate per channel

200 Hz – 40 kHz

A/D converter

16 bit

Input impedance, not less than

100 MΩ

Peak to peak input noise level in the band from 2 Hz up to 10 kHz

3 µV

High pass filter

0.02 – 1000 Hz

Low pass filter

10 – 10000 Hz

On/off notch filter 50/60 Hz (switchable), not less than

40 dB

Common mode rejection ratio, not less than

100 dB

Interchannel damping

60 dB

Interface

USB

Trig-out for third-party firm stimulators

Yes

Visual Stimulator Unit:

Visual Stimulator:

 

Brightness control range

-3…0 log units

Stimulus duration

100 – 50000 µs

Stimulation frequency

0.05 – 50 Hz

Pattern-Stimulator:

 

Stimulation frequency

0.1 – 5 Hz

Resolution

320x240 pixels, 15 colors

Display area:

 

• full screen

Yes

• a half

Yes

• a quarter

Yes

• central area

Yes

Image type:

 

• chess

Yes

• horizontal (vertical) stripes

Yes

• user-defined

Yes

Trig-out for third-party firm stimulators

Yes

Visual Stimulator (LED goggles):

 

Maximal brightness, not less than

400 cd/m˛

Left/right/double-sided stimulation

Yes

Mini-ganzfeld Stimulator:

 

Maximal brightness, not less than

500 cd/m˛

LED Penlights:

 

Colors:

White, red, green, blue

Diameter of light spot with 35 mm distance

10 mm

Maximal illumination with 35 mm distance, not less than

500 lx

Pattern-Stimulator of High Resolution Adapter :

 

Resolution

800x600 pixels, 16 millions of colors

Display area:

 

• full screen

Yes

• a half

Yes

• a quarter

Yes

• central area

Yes

Image type:

 

• chess

Yes

• horizontal (vertical) stripes

Yes

• user-defined

Yes

Supply Voltage:

Electronic units

5 V DC

Desktop PC-based system

220/230 V AC (50 Hz) / 110 V AC (60 Hz)

Notebook PC-based system

220/230 V AC (50 Hz) / 110 V AC (60 Hz) / Int. battery

Dimensions:

Amplifier unit

190x140x50 mm

Auditory-visual stimulator unit

155x105x40 mm

Delivery set (without computer and printer)

450x350x320 mm

Weight:

Amplifier unit, not more than

1.0 kg

Auditory-visual stimulator unit, not more than

0.5 kg

Delivery set (without computer and printer), not more than

8.0 kg

Safety

BF type