Deuteranomalia: This is caused by reduced sensitivity to green light. Deutan color vision deficiencies are by far the most common forms of color blindness. This subtype of red-green color blindness is found in about 6% of the male population,
mostly in its mild form deuteranomaly.
Protanopia: Caused by a reduced sensitivity to red light due to either defective or a lack of long
-wavelength cones (red cones). Some scientists estimate that being a protan is associated with a risk of a road accident equivalent to having a blood alcohol level of between 0.05 and 0.08 per cent.
Tritanopia: People affected by tritan color blindness confuse blue with green and yellow with violet. This is due to a defective short-wavelength cone (blue cone). Whilst
Protanopia and Deuteranomalia are significantly more common in men, tritanopia affects both sexes in equal amounts.
Monochromacy: Only around 0.00003% of the world’s population suffers from total color blindness, where everything is seen in black and white.
Birds Painted on Pharmaceutical Packaging by Sara Landeta
Madrid-based artist Sara Landeta is using an unexpected canvas for her paintings… unfolded pharmaceutical boxes!
Titled Medicine as Metaphor (referring to Susan Sontag’s ‘illness as metaphor’ writings), Landeta paints the animal often associated with freedom — the bird — onto these boxes, creatively drawing parallels to medicines holding patients in captivity.
“This juxtaposition of the natural and synthetic interprets the patient as a captive animal, and the bird as its metaphor,” explains Landeta. See her works up close here.
A human brain has around 86 billion neurons, and the communication between these neurons are constant. The sheer scale of these interactions mean a computer (an EEG) can register this electrical activity, with different frequencies indicating different mental states.