Fish-brain-machine / Radiona workshop

After constructing the Fish-brain-machine PCB circuits we spent some time experimenting and describing the hallucinogenic visuals created by the stroboscopic light. The ping pong balls over the eyes diffuse the LED light, making for a more intense effect – and enabling use with eyes open. Here they describe some of the effects including seeing colours and ‘a strange experience’ of seeing with only one eye – I get this exact same feeling when using it. It is also hard to know if your eyes are open or closed. [See also Re-mapping the senses workshop ]

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Fish-brain-machine

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As part of my Enki exhibition at Kapellica Gallery in Ljubljana 2012, I developed a related perceptual illusions and brain hacks workshop with Marc Dusseiller [Hackteria], as part of the gallery’s Biotech program. We came up with the idea to make a special issue circuit for the workshop and we set to work designing a circuit the encapsulated the Enki project in miniature.

Fish2BrainHack_simulator_v2

After a couple late nights, we came up with this super cool PCB design. Marc worked hard to create a fully functional efficient design, which was also aesthetically pleasing. The outline of the fish is also the ground in the circuit. This has to be the most ultra minimal brain-machine available to build. 6 components. We spent further late nights acid etching the circuits for the workshop in Marc’s home lab.

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It uses ‘biofeedback’ to control the pulse frequency of the lights, low tech Galvanic skin response. Your fingertips press on the fingerprint, acting like a simple resistance meter, sensing the sweat levels to control strobe frequency [specifically 10-30htz to create hallucinations] of two ultra-bright LEDs to create the optical stimulation. The capacitor and resistor set the standby slow pulse and the range within the level necessary to cause visual hallucination. The design incorporates measurement graduations for eye spacing so you can personalise LED placement to fit your eyes.

It’s possible to use extra LEDs and several colours.  After soldering the 6 components its possible to layback and experience your own personal electronic psychedelic experience.

Fish brain interface DIY PCB
Marc Dusseler Fish brain interface DIY PCB

Strange face illusion with two-way Mirror feedback

 

A version of the Strange Face illusion with video feedback and face tracking through a two-way mirror

“… a quiet room dimly lit by a 25 W incandescent light. The lamp was placed on the floor behind the observer so that it was not visible either directly or in the mirror. A relatively large mirror (0.5 m60.5 m) was placed about 0.4 m in front of the observer. The luminance of the reflected face image within the mirror was about 0.2 cd mÿ2 and this level allowed detailed perception of fine face traits but attenuated colour perception…The task of the observer was to gaze at his/her reflected face within the mirror. Usually, after less than a minute, the observer began to perceive the strange-face illusion…”  Giovanni B Caputo, Perception, 2010, volume 39, pages 1007 – 1008 2010

 

Blind drawing of hand

Blind drawing of hand starting from the left and using a continuous line, before and after experiments.
before-afterCould this exercise be used as a measure of “proprioceptive drift” before and after ‘Rubber hand illusion’ type experiments? I will be exploring this idea soon with the research group at BEAM lab…

James Turrel – Light Reignfall


James Turrell’s Light Reignfall @LACMA – Andrew van Baal

James Turrell’s Light Reignfall Light Reignfall is a work from his series of perceptual cells, inside the participant is exposed to a uniform homogenous field of modulated light. A combination of sensory overstimulation, yet deprived of recognisable forms or space, hallucinatory effects are experienced.

“Assisted by an attendant, an individual viewer enters a spherical chamber on a sliding bed. A program of saturated light (operated by a technician) surrounds the viewer for twelve minutes, allowing the visitor to experience the intense, multi-dimensional power of light and the complex seeing instrument of the human eye.”

“James Turrell (b. 1943, Los Angeles), a key artist in the Southern California Light and Space movement of the 1960s and 70s. The exhibition includes early geometric light projections, prints and drawings, installations exploring sensory deprivation and seemingly unmodulated fields of coloured light, and recent two-dimensional work with holograms. One section is devoted to the Turrell masterwork in process, Roden Crater, a site-specific intervention into the landscape just outside Flagstaff, Arizona, presented through models, plans, photographs, and films.”

http://www.lacma.org/art/exhibition/james-turrell-retrospective

God Helmet

Neurologist Michael Persinger created the God Helmet, an actual helmet modified with electrical coils that can create electromagnetic fields in the wearer’s temporal lobes that induces “religious” experiences in the people who put it on. “This is a device to investigate whether religious, spiritual, and mystical experiences had a natural rather than a supernatural source. He speculates that we are somehow programmed so that they can generate religious experiences via our brain’s internal processes.” I was interested in this experiment because of its use of sensory deprivation and the fact it would be relatively easy to recreate [see my DIY neurostimulation attempt 2009] for my Enki project. My plan was to drive it with frequencies generated by my electric fish [a low voltage species].

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Persinger noted ‘that there were many points of similarity between seizures experienced by some individuals who suffered from epilepsy, and the types of mental and spiritual experiences that St. Paul, Moses, and many religious mystics had reported. 3 Persinger wondered if visions, a sense of the immediate presence of God, and other mystical experiences could be artificially created in the laboratory by magnetically inducing changes in the temporal lobes of a person’s brain.”

Persinger vs Dawkins: The God Helmet from Tommy Decentralized on Vimeo.

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Auditory illusion

Diana Deutsch developed some fascinating auditory illusions. These include the phenomenon of ‘speech to song’ whereby repeating loops of spoken word suddenly begin to sound like a song. In another illusion, ‘phantom words’ new words emerge from repeating fragments of words. To experience these all you need are headphones as the a stereo effect is essential, here is the link to her work.…

Speech to song http://deutsch.ucsd.edu/psychology/pages.php?i=212
Phantom Words http://deutsch.ucsd.edu/psychology/pages.php?i=211

“The McGurk effect” is a perceptual illusion that mixes a sound with the visual cue of a different sound, We see the mouth move and hear/see a mismatched sound, check out what happens… https://www.youtube.com/watch?v=aFPtc8BVdJk

This page has some great interactive examples of optical and sonic illusions
http://www.cs.ubc.ca/nest/imager/contributions/flinn/Illusions/Illusions.html