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 ] https://www.youtube.com/watch?v=Lwne5xICLkI
Images of my first GSR [Galvanic Skin Response] sensor hacked from a toy lie detector circuit works well but currently looking for better DIY versions to use in experiments. More research on this to be posted soon.