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X-Brain

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L/S/E Machines explained

October 21st, 1995

As said a Brain Machine is composed of 3 main parts which could be considered completely autonomous (from the electric point of view).

Electronics flowchart

Light domain: how it works
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Sound Stimulation

October 21st, 1995

ELECTRONICS:

This section is handled completly by the software, which provides a stereo output with two synth. In the first version of software we created a precalculated sinusoidal wavetable. In some softwares the wavetable is calculated once per cycle, stretching it basing to the frequency.

PROJECT PURPOSES:

It is important to coadiuvate the effect of the light stimulations in a matter that work synergically with the first one.

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XBrain project

October 21st, 1995
XBrain project logo

Main target of the project is to reveal some interesting aspects of the low-level interactions between some computer-controlled human interfaces like Light and Sound machines (aka Brain Machines) and human itself. These devices provide a way to stimulate our self-controlled states of perception and to manage them using simply a Light, Sound and Electrical pulses in a isolated environment.

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Interfaces

October 21st, 1995

The first hardware interface was codenamed B-Storm, engineered and built by Xi/bRS. It featured:

  1. Linear amplification of a BF signal
  2. Analogic Mixer for BBF and external sources
  3. 6-bit Light switcher
  4. 1-bit TTL pass-thru

BStorm v1

B-Storm final version. Internal look
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Light stimulation

October 21st, 1995

This part is achieved with Hi-Lum 3cd bright LED (Light Emission Diode). In the B-Storm there were 3 LED per eye, 2 bright red, 1 green. This latter leaded an insufficient radiation. These LED were displaced as the figure shows:

BStorm Eyelids

B-Storm: interal view of the goggles (detached from the main part)

Cymex Eyelids

CyMEX: external view of the goggles
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Electric Stimulation

October 21st, 1995

Here's the picture of the first stable release of the CES:

Cranial Electro-Stimulator

Photo of Cranial Electro Stimulator
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