Directorio de recursos de “open source” para investigadores de herramientas de neuropotencial relacionadas con las Resonancias Schumann.


Tal y como comentábamos en anteriores artículos y siguiendo las sugerencias de muchos de nuestros lectores, ofrecemos un directorio  completo de recursos en código abierto, relacionados con la investigación neurológica y las Resonancias Schumann.

Lo que denominamos Tecnología Biopotencial, está siendo objeto de investigación en abierto por diferentes desarrolladores en el marco de la iniciativa sourceforge.net.

Seguidamente exponemos algunas de las principales iniciativas y recursos existentes para investigadores en la materia:

1.-Biocomputadores de señal ELF: Interacción emociones-interface.

Dispositivos EEG y ECG (Electroencefalograma y Electrocardiograma).

EEGs y Electroencefalografía.

    • Brainmaster

      • Brainmaster Schematics – These are Tom Collura’s freeware build specs for the Brainmaster EEG. These specs are based on the Motorola 68HC11EVBU evaluation board which is no longer available and difficult to find. I have heard that Axiom 68HC11 boards can be used as an alternative. The amplifier is based on AD620 instrumentation amps and OP90 op-amps. Frequency response is 1.7-34 Hz and CMMR is 110 dB. Unfortunately the firmware and PC software is no longer available. 


    • OpenEEG Project – This is a project to develop a low-cost EEG for < $100. There is a discussion group about this project here.

        • ModularEEG – This design is a 2-channel EEG with RS232 PC interface. It uses an AT90S4433 microcontroller for ADC and a differential amp based on INA114 instrumentation amps and TLC277 op-amps. The input stage is modeled after (or influenced by) the Biosemi designs, with some modifications. Data is sent to the PC over the RS232 data lines (RX/TX). This is the most recent and sophisticated of the OpenEEG designs. 

        • RS232EEG – This is an older version of a 2-channel EEG with RS232 PC interface. It uses an AT90S4433 microcontroller for ADC and a differential amp based on INA114instrumentation amps and TLC272 op-amps. Data is sent to the PC over the RS232 data lines (RX/TX). The firmware rom image and source code are included in the download file. 

        • ComEEG – This is a lower cost 1-channel EEG with RS232 PC interface. This one uses no microcontroller, it sends pulses to the PC over the RS232 handshake lines (RTS/CTS). It uses a differential amp based on INA114 instrumentation amps and OPA2604 op-amps. ADC is implemented with 555 timers. It includes a 7555 timer for calibration circuit. The PC must be run in DOS only mode to disable interrupts in order to achieve proper timing. 

        • ComADC – This is another low cost 1-channel EEG with RS232 PC interface. It also uses no microcontroller and sends pulses to the PC over the RS232 handshake lines (RTS/CTS). There is no differential amp, signals are fed into a 555 timer based PWM circuit. The PC must be run in DOS only mode to disable interrupts in order to achieve proper timing. 

        • GamePortEEG – This is another low cost EEG that sends signals to the PC via the game port. It uses a differential amplifier. There doesn’t seem to be much info about this design. 

        • Joerg’s Home Page – This is Joerg Hansman’s home page for download of the OpenEEG schematics and firmware. Joerg is the designer of all of this fancy OpenEEG hardware. 

        • ElectricGuru EEG Software – This is Rob Sachs’ Windows software that uses FFT to do spectral analysis of the EEG data. It apparently works with the RS232EEG and ModularEEG designs above. This is binary executable only, the source code is not available. 

        • Eagle Layout Software – You need this software to look at the OpenEEG schematics above. Low volume orders of boards can be done at PCBexpress, they accept Eagle format CAD files. 

      • Atmel DevTools – These are the development tools for Atmel AVR 8-bit RISC microcontrollers. Atmel microcontrollers and flash tools can be ordered online from Digikey. They also have most of the instrumentation amps, operational amps, and other parts. A schematic for a programmer’s cable is here if you want to make your own.


    • Circuit Cellar

      • HAL-4 EEG – Circuit Cellar designed a low cost EEG using the ubiquitous 8031 microcontroller. The amp section is built using six TL084 op-amps. Singals are digitized usingADC08008 A/D converters. Frequency response is 4-20 Hz and the firmware is set up with 64 Hz sampling. There used to be a kit for sale at Creative Concepts, but it’s no longer available. Apparently the original PCB design file was lost. There is a manual that shows the schematics, and there is a newsgroup for HAL-4 fans. Some people have improved on this design to achieve better band width and sampling rates.


  • Other EEG Schematics

      • Meissner Research – Jim Meissner improved on the HAL-4 design and was able to achieve better frequency band width and sampling rates. He used a 68HC11 board from New Micros. There are tons of free development tools and info about 68HC11 on the web. Jim posted his EEG firmware source and some sample EEG recorded data here. Jim also invented the Brain State Synchronizer and some interesting meditation speakers

      • Bernd Porr – Here’s an EEG preamp and filter circuit that uses AMP01 instrumentation amp and NE5532 op-amps. He uses a TIL111 opto-coupler. He also has an interesting Java-based EEG viewer that connects to a C++ server via socket connections. 

    • A CMOS IC for Portable EEG Acquisition Systems – This short document describes the design of a an EEG into a single CMOS IC that consumes 520 uA power. This single IC contains 16 instrumentation amplifiers, analog multiplexer, programmable gain amplifier, auto-calibration circuitry, and a digital computer interface.
EMGs : Electromirografía:

MM.-Mind Machines:

Sensores:

Dispositivos portátiles:

    • ProComp – 8-Channel (2 EEG), 0-40 Hz ($3500)
    • MOE EEG3 – 1-Channel, 1-30 Hz ($534)
    • CyberLink – 3-channel (EEG/EOG/EMG) ($1995)
Teorías de Potencial Biométrico:

Biopotential Measurement Theory


EEG Signal Measurement


ECG Signal Measurement

EMG Signal Measurement


GSR Signal Measurement


Respiration Measurement

Teoría de Proceso de señal digital:
Teoría General DSP.

General Biofeedback Resources


EEG – Neurofeedback Resources


ECG – Electrocardiography Resources


EMG – Electromyography Resources


GSR – Galvanic Skin Response Resources


Biofeedback Journals and Reference

Biofeedback Discussion Groups

EEG Computer Interfaces

EMG Interfaces:
Medida de emociones:
Sistemas de Investigación de las Emociones:
Proceso de datos y Emociones:
StarViewerTeam International 2012.

 

 

4 comentarios sobre “Directorio de recursos de “open source” para investigadores de herramientas de neuropotencial relacionadas con las Resonancias Schumann.

  1. Impresionante documentacion,espero que algunos con esto ,vean las cosas de otra manera a como lo estaban haciendo.

  2. Gracias por la impresionante relación. He estado conectando con los enlaces, y he observado que una gran mayoría no están activos.
    Lo que más me sorprendió fue que el último Psionics Devices, que estaba activo y consultable por la mañana, por la tarde me daba error. ¿Podría ser que alquien haya estado “jugueteando” con esos enlaces para hacerlos inoperativos?
    Si es posible, me gustaría poder volver a conectar con Psionics Devices. Si alguien sabe como hacerlo, ya que no he podido encontrarlo.
    Gracias

    1. Parece que sistemáticamente los van censurando a medida que se les da difusión. Un consejo: Descargar los contenidos cundo los veáis y volvedlos a difundir, ya que se trata de GNU. Licencias de Open Source.

      No dejéis que desaparezcan los recursos de GNU de Internet.

Los comentarios están cerrados.

Un sitio web WordPress.com.

Subir ↑

A %d blogueros les gusta esto: