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A sensation of light caused by excitation of the retina by mechanical or electrical means rather than by light, as when the eyeballs are pressed through closed lids.

[French phosphène : Greek phōs, light; see phos- + Greek phainein, to cause to appear, to show; see bhā- in Indo-European roots.]


(Physiology) the sensation of light caused by pressure on the eyelid of a closed eye or by other mechanical or electrical interference with the visual system
[C19: from Greek phōs light + phainein to show]


(ˈfɒs fin)

a luminous visual image produced by mechanical stimulation of the retina, as when pressing on closed eyelids.
[1870–75; < French phosphène, irreg. < Greek phôs light (contraction of pháos) + phaínein to show, shine]


[ˈfɒsfiːn] Nfosfeno m
References in periodicals archive ?
Phosphenes are harmless, but theydo show that messing with the brain can have unexpected consequences.
MUSIC Phosphenes Debut show from Phosphenes with support from Boris a Bono and Johana Hartwig.
Peut-etre ne faut-il retenir que les traces laissees a meme le reseau, comme si nous cherchions a prolonger la persistance d'une image sur la retine, pour en capturer a notre tour quelques phosphenes, pour en reagencer les pixels a notre guise, comme ce temoignage de l'auteur lui-meme qui se declarait en partie anonyme ?
The first person to receive the neural implant from developer Second Sight, the 30-year-old is able to 'see' individual phosphenes or spots of light when his visual cortex is stimulated by the device.
Binary coded words have been transmitted via internet from an emitter's brain located in India and equipped with an EEG cap allowing the real-time analysis of signals from cerebral activity, into a receptor's brain located in Strasbourg, who was stimulated by a robotized Transcranial Magnetic Stimulation system, triggering or not phosphenes (flashes of light), for de-coding the message.
The subjects experienced this as phosphenes, flashes of light in their peripheral vision.
Acouphenes (sifflements auditifs) et des phosphenes (vision de points lumineux) - Vertiges.
Phosphenes and transient scotomas induced by magnetic stimulation of the occipital lobe: their topographic relationship.
You see these phosphenes after you see something bright, or when you come into the light after being in a dark room like a movie theater or a mine shaft.
Patients see bursts of light called phosphenes and "not truly naturalist vision; says Raymond Iezzi, a clinician-scientist who performs retinal surgeries at Mayo Clinic in Rochester, Minnesota.
Images seen with eyes closed included phosphenes, geometric patterns (waves, stars, DNA-like structures, fractals), afterimages and, in one case, an image of a person.
Dr Lauren Ayton, from the Centre for Eye Research Australia said: "With the prototype the idea is to stimulate the retina to give little spots of light, which are called phosphenes, and so, with her implant, Di will be able to see a number of spots in different locations and will be able to see things like shapes and the edges of doorways and objects like that eventually.