delta frequency

delta frequency (2013)

a delta wave is a high amplitude brain wave with a frequency of oscillation between 0–4 hertz. delta waves, like other brain waves, are recorded with an electroencephalogram and are usually associated with the deepest stages of sleep (3 NREM), also known as slow-wave sleep (SWS), and aid in characterizing the depth of sleep.

Delta waves, an EEG (electroencephalograph) one second sample

all images from this short series are digital shots taken in the pitch-darkness, no set-up light source whatsoever. the person was not seen and i was seen by the person while trying to extract those frames from the surrounding Cimmerian-darkness void. the images could obviously not been staged.

extraction #01

few seconds of exposure time was set with high iso applied which resulted in black, empty looking frames. each final image has been revealed by pushing the exposure time further in the editing software and adjusting tones and contrast to digital limits.

the process was applied months after those images were shot, so all corresponding feelings are forgotten.

the moment of having them brought back was extraordinary. it felt like seeing apparitions emerging from a long time forgotten dream.

extraction #02

extraction #03

extraction #04

extraction #05

extraction #06

more: http://www.karol-liver.com/delta/