The latest study, released by the plaintiffs in a class-action lawsuit against Fitbit, found that the pulse-monitoring technology used in the company's wrist-bound Surge and Charge devices was highly inaccurate during elevated physical activity..
An eye disease affecting the macula (the center of the light-sensitive retina at the back of the eye), causing loss of central vision. Migraine with Aura: A type of severe headache accompanied by various visual symptoms. Myopia: See nearsightedness: Nearsightedness
The information comes to the primary visual cortex from visual sensory receptors (called photoreceptors) located on the retina at the back of each eye. Neurons in the primary visual cortex and surrounding 'secondary' visual areas are specialised to respond to different features of visual information arriving there.