Category Archives: Vision
A system for detecting an accessible bug
We have described each of the operations on the retinal image in terms of what common factors in a large variety of stimuli cause response and what common factors have no effect. What, then, does a particular fiber in the optic nerve measure? We have considered it to be how much there is in a […]
You are green
“As I recovered at home, colour started slowly creeping back into my life, whispering around corners. This was a very perplexing time, for often I only felt I was seeing a colour but was unable to identify it. I would stare endlessly at trees and lamp-posts, desperate to match the colour I believed was there […]
The screen is looking at you in the eyes
Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time. Some symptoms of CVS include headaches, blurred vision, neck pain, fatigue, eye strain, dry eyes, irritated eyes, double vision, vertigo/dizziness, polyopia, and difficulty refocusing the eyes. In CVS, the screen […]
Escape from the monochrome room
“Imagine a girl called Mary. She is a brilliant neuroscientist and a world expert on colour vision. But because she grew up entirely in a black and white room, she has never actually seen any colours. Many black and white books and TV programmes have taught her all there is to know about colour vision. […]
Dead lends a hand, murder lends glasses
Your browser does not support the video tag. In Dead Lends a Hand, the investigator Brimmer kills a woman he attempts to blackmail. The camera shows Brimmer’s face just after the murder and zooms in. After a few seconds, the image of the face becomes still as if Brimmer was paralyzed in shock. At the […]
The blue eyes of the argopecten irradians
Common Name: Bay Scallop, Scientific Name: Argopecten irradians, Specimen #: 27, Size: 2.5 inches acBay Scallop, Scientific Name: Argopecten irradianross (side to side), Notes: specimens ordered from Gulf Specimen Marine Laboratories: (850) 984-5297, gulfspecimen.org, collected near Panacea, Florida, Location: David Liittschwager’s Home Studio: 120 Parnassus Ave #1, San Francisco, CA, 94117 “The mantle of the […]
The ‘dawning’ of an aspect
“I contemplate a face, and then suddenly notice its likeness to another. I see that it has not changed; and yet I see it differently. I call this experience “noticing an aspect…” And I must distinguish between the ‘continuous seeing’ of an aspect and the ‘dawning’ of an aspect… I see two pictures, with the […]
A vision substitution system
Two illustrations of Bach y Rita’s vision substitution system, in 1969. “Four hundred solenoid stimulators are arranged in a twenty x twenty array built into a dental chair. The stimulators, spaced 12 mm apart, have 1 mm diameter “Teflon” tips which vibrate against the skin of the back (Fig. 1). Their on-off activity can be […]
R-G-B. Peter Campus
If we are to avoid the problem of creating a visual system that will reduce the capacity of the eye, it is necessary to disassociate the video camera from the eye and make it an extension of the room. Peter Campus Video as a Function of Reality, 1974