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CGX Quick-20r Manual
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CGX Quick-20r Manual

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CGX A Cognionics Company
Quick-20r
This manual contains general operating instructions, precautionary measures,
maintenance instructions, and information for use of the CGX Quick-20r.
Please read this manual carefully and familiarize yourself with the controls and
accessories before using the product.
Note
This is an investigational device designed for research and development efforts.
•
It is not an FDA-approved medical device.
•
There are no known side effects from the use of this product.
•
Description
The Quick-20r is a wireless, battery-
operated EEG headset utilizing dry
sensor technology. Channel positions
are arranged in a 10-20 montage plus
2 variable-placement ExG channels.
The headset provides an integrated
approach to the wireless acquisition
of recorded of EEG signals. Wireless
technology allows the subject to move
about while real-time data is collected
and displayed.
The headset obtains high-quality
EEG with minimal scalp preparation.
V2
Patented mechanisms and replaceable
dry sensors align to various head
shapes and sizes, maintaining sensor
positions in a standard montage.
EEG channels are sampled at a time
resolution of 500Hz and converted to
digital data at 24 bits of resolution.
The Quick-20r provides research-
grade signal quality and is ideally
suited for general-purpose EEG and
ERP research in laboratory and field
environments.

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Summary of Contents for CGX Quick-20r

  • Page 1 CGX A Cognionics Company Quick-20r This manual contains general operating instructions, precautionary measures, maintenance instructions, and information for use of the CGX Quick-20r. Please read this manual carefully and familiarize yourself with the controls and accessories before using the product.
  • Page 2 Always Use Supplied Accessories Check if your subject has a sensitive • Using accessories other than those supplied dermatological condition causing sensor with your Quick-20r system may result in intolerance. damage or diminished efficacy of the system. To avoid cross-subject contamination, do •...
  • Page 3 Yet, dry systems are subject of and F4 sits right of Fz. to several challenges. First, The Quick-20r is sized to fit most adult head sizes. See the sensor must be designed to directly touch the scalp or sizing chart on Page 27.
  • Page 4 40 Flex Sensors 5 Alcohol Wipes The Following Items 10 Drypad Ear Sensors 4 Rechargeable AA A1 Earclip (left ear) Batteries Quick-20r Headset A2 Earclip (right ear) Battery Charger with 2 ExG Channels 3 Active Lead Wires Carrying Case and Bluetooth Dongle...
  • Page 5 Device Overview Amplifier Bluetooth Dongle Wireless amplifier High-speed receiver collects signals dongle plugs into and transmits to your computer’s Bluetooth Dongle. USB port. Drypad Sensor Flex Sensor Drypad Ear Sensor Drypad sensors Flex sensors slide Dedicated Drypad make direct through hair for sensors for use with skin contact for high-quality scalp Earclips.
  • Page 6 Choose the latest version link under “Downloading and • Installing the Software.” Drypad Sensor for Extract the zipped file to your desktop. • direct skin contact Run CGX Setup and follow the instructions. • If you see a security warning, select • More Info Run Anyway The software will create a shortcut on your desktop.
  • Page 7 Preparation 4. Assemble The A1 Earclip 1. Pinch the earclip to expose the two snap connectors and attach Drypad Ear Sensors to both. 2. Attach the Passive and Active Lead Wires to either snap on the earclip. 3. Attach the Passive Lead Wire to the touchproof A1 Earclip connector on the A1 handle.
  • Page 8 Low Battery Yellow Critically Low Battery (replace immediately) Trigger The Trigger Status Light is for use with the optional CGX Wireless StimTrigger, and indicates when the headset is receiving trigger signals from the StimTrigger unit. Wireless StimTrigger Out Of Range...
  • Page 9 Double click on the CGX Acquisition software icon. You should see under CGX Quick-20r Discovered Devices. If you do not see the name CGX Quick-20r, remove and re-insert the dongle and restart the software. 1. First, click the device name in this window to select the Quick-20r. 2. Then click Connect.

  • Page 10: Donning Instructions

    Donning Instructions Optimal Headset Placement Crown sitting directly on top of head Headset not tilted too Fp1 and Fp2 sensor far towards the back of pods resting 1cm the head above the eyebrows No legs or pods are tilted or misaligned Earpads resting securely around ears Ask the subject for any areas of discomfort and...
  • Page 11 Donning Instructions 9. Place The Quick-20r On The Subject’s Head 1. Grasp each handle and gently pull them apart to open the headset. 2. Slide the headset over the subject’s head. 3. Adjust the position of the headset so the earpads fit around the subject’s ears. 4. Brush aside excess hair near and underneath the earpads.
  • Page 12 The range of impedances with dry sensors may be higher than what you are accustomed to when working with conventional wet sensor amplifiers. CGX devices utilize a combination of advanced electronics, shielding, and mechanics to obtain EEG signals even when contact is poor, and can tolerate sensor impedance up to 2,500 kΩ.
  • Page 13 Disposal Instructions mannequin head for several To protect the environment, always follow local law, rules, hours until the legs relax. and policies regarding electronic and battery disposal. You may also return the headset to CGX for proper disposal.
  • Page 14 Obtaining Clean EEG Data The most important aspect of EEG recording is that Quick-20r sensor locations output data is only as good as the recording input. While lie within 1.0 centimeters on the vast majority of hand- algorithms exist to remove artifacts, poorly recorded data measured enhanced 10-20 cannot be fixed in post processing.
  • Page 15 Understanding Readings Clean Data At Default Scale Traces are thin and deviate minimally from the axis. Blinks Eye blinks will generate muscle artifacts in the frontopolar locations (Fp1 and Fp2) and less so in frontal sensors (F3/F4, F7/F8), overshadowing brain activity in EEG recordings. Eye Movement Moving the eyes will generate muscle artifact in the forehead and front of the head.
  • Page 16 Understanding Readings Muscle Artifact: Jaw Clench Jaw clenching may affect most or all channels, especially if clenching hard. Light jaw clenching or tightness can be observed in F7/F8, T3/T4. Take note of any temporomandibular joint disorders: these can cause artifact without typical clenching. Muscle Artifact: Tongue Movement The tongue is a large polarized muscle, with the tongue’s tip negative with...
  • Page 17 Understanding Readings Muscle Artifact: Neck Tension Neck tension may affect channels on the back of the head, predominantly O1/O2, but also in parietal sensors (Pz/P3/P4, P7/P8). Subjects should be comfortably seated, with appropriate bracing at the back and neck. Avoid slouching. Headset Or Electrode Disruptions: Sensor Pops Brief disruptions in contact between sensor and scalp may cause “sensor pops”...
  • Page 18 3 feet from power cords, plugged-in devices, and lighting or overhead fluorescent lights. The Quick-20r shields the sensors from environmental noise, but issues can still occur with poor skin contact. If power line artifacts appear on all channels, lightly wet A1 Reference Drypad Ear Sensor.
  • Page 19 Understanding Readings Improper Setup: No Connected Reference There are a multitude of recording errors when the A1 reference earclip is not connected to the subject. The most common are: • Impedances match or nearly match at a low value but do not appear on the display or in the impedance head map.
  • Page 20 Understanding Readings Improper Setup: Reference Contact When the reference channel is touched or jostled, all channels will be affected. Avoid disrupting the A1 Reference earclip during use. Improper Setup: Reference Disruption When the reference is disconnected, all channels will disconnect as well. Improper Setup: Ground Disruption If the ground has poor contact, all channels will be impacted.
  • Page 21 • Device Configuration information; changing the settings will not change the configuration of the device. If you need to change device configuration, contact support at CGX. Data Recording Click to open a file dialog. Select the desired • Record location, file name, and file type. (CSV files have a time stamp built in).

  • Page 22: Software Reference

    Software Reference Display Tab Scaling: Headset The display tab controls scaling and other viewing sets the x axis time window. By default, it is set to 2 • Time parameters for the signals. seconds. sets the y axis vertical gain for the EEG • Scale (EEG) channels on the head.

  • Page 23: Channels Tab

    (Z (kΩ)) and sensor offset (Off (mV)). Below 2,500 kΩ Green The offset is calculated This threshold can be changed with the Mask Hi-Z menu relative to the reference channel A1. Threshold for the Quick-20r is set at 2,500 kΩ.
  • Page 24 Software Reference Markers Tab Received Triggers The box shows all of the received triggers chronologically. • If no trigger is in range, value received will be 47831 (in • hex: 0xBAD7). This button will clear all of the triggers in the • Clear History box.

  • Page 25: Status Tab

    • Lost Packets in communications between the headset and the computer, increasing as the headset moves away from the computer. (not applicable) • AIM Sensors Battery status is displayed at the bottom of • Battery Level this tab. The Quick-20r only uses Batt: A.

  • Page 26: Specifications

    Specifications 24-bit simultaneous sampling On-board and on-screen A/D Resolution analog-to-digital converters continuous impedance check Impedance with real-time monitoring of Check Sampling Rate 500 samples per second all channels simultaneous with EEG 0-131 Hz with true DC Bandwidth coupling EDF, BDF, CSV Export To Accelerometer 3-axis measures head motion Brainvision Recorder, NeuroPype, LabStreaming...
  • Page 27 Quick-20r Headmap Head Size Accommodation Percentage of subjects per age range. Male Female 9-12 13-16 17-20...
  • Page 28 San Diego, CA 92121 CGX A Cognionics Company 8445 Camino Santa Fe, #213 Imported By: San Diego, CA 92121 Brain Products GmbH 858-864-9400 Zeppelinstrasse 7 Sales@CGXSystems.com 82205 Gilching, Germany www.brainproducts.com Covered by Patents issued and/or pending under license from Cognionics, Inc US9314183B2, US9615761B2, US9935726B2, US8798710B2, and International patents. © 2021 CGX, LLC. Doc: Q20RV2010121...