intro: a zoo of hearing aids
![The 'Audiphone', a bone-conduction hearing aid, late 19th century.](http://www.joostrekveld.net/wp/wp-content/uploads/2018/01/030-321x494.jpg)
![Dutch army experiments for airplane detection, early 1930's.](http://www.joostrekveld.net/wp/wp-content/uploads/2018/01/042-353x494.jpg)
Michail Matiushin’s ‘Extended Vision’
Research into visual perception and synesthesia at his ‘Department of Organic Culture’ at GINKhUK in Leningrad.
Proposed a ‘scientific method’ that would result in a more complete kind of vision.
![Exhibtion of Michail Matiushin's research into 'Extended Vision', 1930.](http://www.joostrekveld.net/wp/wp-content/uploads/2018/01/057-494x369.jpeg)
some remarks on perception
Camera-eye metaphor suggests that perception is stable, uniform, passive, complete.
History of perception theories, Plato, Euclid, Ibn Al-Haytham, Kepler.
Adaptation in perception: Chevreul, Plateau, Purkinje, Erismann.
Perception as active: Gestalt laws, Pritchard, Held, enactivism.
Change blindness.
![The last portrait of Joseph Plateau when he could still see.](http://www.joostrekveld.net/wp/wp-content/uploads/2007/03/josephplateau.jpg)
![Studies of subjective visual phenomena by Jan Evangelista Purkinje.](http://www.joostrekveld.net/wp/wp-content/uploads/2007/03/purkinje.jpg)
sensory substitution
Paul Bach-y-Rita
the vOICe
Feelspace
![Paul Bach-y-Rita's tactile vision experiments.](http://www.joostrekveld.net/wp/wp-content/uploads/2007/03/bach-y-rita2.jpg)
projects
Alphons Schilling
Auger and Loizeau
Carsten Hoeller
Steve Mann
Neil Harbisson and Moon Ribas
many other smaller projects.
![Alphons Schilling, "Kleiner Vogel", 1978.](http://www.joostrekveld.net/wp/wp-content/uploads/2018/01/alphons-schilling-kleiner-vogel-1978-494x328.jpg)
!['Kit for the Exploration of the Self' by Carsten Hoeller, 1995.](http://www.joostrekveld.net/wp/wp-content/uploads/2018/01/carsten-hoeller-kit-exploration-self-1995-494x472.jpg)
moral
reflection on human sensory potential
reflection on relationship human – world (constructivism, enactivism, performativism)
cyborgs and posthumans
![Neil Harbisson.](http://www.joostrekveld.net/wp/wp-content/uploads/2018/01/neil-harbisson-494x277.jpg)