Geneq > Biotechnologie > Systèmes de biofeedback

Moniteur portatif d'EEG (Alpha-Theta)
Modèle AT62


Autogenics' Advanced Technology AT62 EEG Alpha-Theta Trainer is a simple, self-contained, portable EEG for use in your office – or for your patient's use at home.
The AT-62 is now supplied with standard Gold ear and scalp electrodes, paste, prep, and full instructions on using the 10-20 system for maximum EEG signal resolution.
And, with no software to learn, you can use the AT62 EEG the day you receive it. It's technology that WORKS FOR YOU.

Features
  • 8-12 Hz alpha and 4-8 Hz theta.
  • 100-400 Hz EMG filter.
  • EMG artifact indicator.

Superior Feedback

Audio: The Alpha-Theta Trainer uses an internal speaker to provide quality audio feedback.
The Alpha-Theta Trainer has two audio feedback modes. In one, the pitch increases or decreases proportionally with the EEG signal. In the other, the audio tones turn on or off to indicate threshold crossing. Feedback can be provided continuously, above or below threshold.

Visual: The alpha and theta frequencies each have separate numerical and lightbar displays (autoranging from 0.1 to 99.9 µV).
You can select to display real-time EEG, time period averaged EEG feedback, or the PERCENTAGE OF TIME the EEG activity is in an alpha or theta state.

Advanced Feedback Features

The Alpha-Theta Trainer illuminates an LED and sounds a tone to indicate CROSSOVER (theta >alpha) has occurred.
The Last Value Attained (LVA) feature displays the maximum or minimum EEG value attained (as a target for patient motivation) while the lightbar provides real-time EEG feedback.

Statistical Capabilities

Simply by pressing a Statistics button, the Alpha-Theta Trainer provides both summary and intra-session statistics for the mean, max., min., SD, %SD, and the %Time or Threshold.

Specification
The AT62 EEG is designed to meet/exceed the electrical and safety standards specified by UL 2601, IEC 601 and CSA 871.
Visual & Audio – Per Frequency
Two Frequencies Alpha only, Theta only, Both Alpha + Theta
Display Options Numerical LED + Lightbar, Lightbar only, Numerical LED only, A/B Ratio
Numerical LED Displays & Range Three red digits, 0.5" high; 0.1 - 99.9 microvolts
Numerical LED Resolution 0.10 microvolts
TPI (Time Period Integration) Settings 0.5, 1.0, 2.0, 4.0, 6.0, 10.0, 60.0 seconds
Numerical LED Read-Outs EEG microvolt, Percentage of time within bandpass
LVA (Last Value Attained) Settings Continuous, Maximum, Minimum
Lightbar Range

15 segments, x0.1 to x2.5-3.0 proportional scale

Tones Piano(default for Alpha), Continuous (default for Theta), Oboe, Flute
Volume Levels 0 to 7, 4 is the default
Provided

Continuously, Above or Below Threshold
Home-Use Software Lockout Enabled, Disabled
Statistics – Per Frequency
Statistics Acquired (Summary) Min., Max., Mean, SD, %SD
Statistics Acquired (Intra-Stats) Choice of Min., Max., Mean, SD, %SD
Sampling Capacity 60 minutes of data
Intra-Session Data Collection Rate & Data Display Rate 0.5 minutes, fixed; 2.5 seconds
Statistics Sampling Rate

4 Hz (every 0.25 seconds) of VRMS
Electrical – Per Frequency
EEG Bandpass & Rolloff 8-12 Hz Alpha, 4-8 Hz Theta; 40 db per octave
EMG Bandpass & Threshold Range 100-400 Hz; 0.0 to 99.9 microvolts
Common Mode Rejection & Differential Input Impedance 120 db; >1,000,000 megohms
Input Noise & Leakage Current 0.3 microvolts; In compliance with UL 2601 specifications
Audio Output 3.5 mm stereo earphone jack, (mono output)
Analog Output

Linear 0-5 volt DC signal, compatible with most computer interfaces
Line Power Input 120 volt, 60 HZ, 220 volt, 50/60 Hz
Battery Rating 10 to 12 hours use; 16 hour recharge maximum w/ built-in overcharge protection
Dimensions & Weight 2.5" H x 7.7" W x 5.3" D; 1 pound 11 ounces

Standard Accessories (included)
  • (1) UL isolation adapter
  • (4) Installed Ni-Cad rechargeable batteries
  • (1) EEG electrode assembly
  • (1) Audio feedback heads
  • (1) Carrying case
  • (1) Owners manual