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When reading, the eye moves continuously along a line of text, but makes short rapid movements (saccades) intermingled with short stops (fixations). There is considerable variability in fixations (the point at which a saccade jumps to) and saccades between readers, and even for the same person reading a single passage of text.
Eye tracking device is a tool created to help measure eye and head movements. The first devices for tracking eye movement took two main forms: those that relied on a mechanical connection between participant and recording instrument, and those in which light or some other form of electromagnetic energy was directed at the participant's eyes and its reflection measured and recorded.
Hypermobility may refer to: Hypermobility (joints), joints that stretch further than normal Hypermobility spectrum disorder, a heritable connective tissue disorder; Hypermobility (travel), frequent travelers; It should not be confused with flexibility
Hypermobility spectrum disorder does not include people with asymptomatic hypermobility or people with double-jointedness but no other symptoms. Hypermobile Ehlers–Danlos syndrome and hypermobility spectrum disorders may be equally severe. [5] [6] HSD is further classified into different subtypes, which include: [6]
Hypermobility has been associated with myalgic encephalomyelitis (chronic fatigue syndrome) and fibromyalgia. Hypermobility causes physical trauma (in the form of joint dislocations, joint subluxations, joint instability, sprains, etc.). These conditions often, in turn, cause physical and/or emotional trauma and are possible triggers for ...
Compared to the eyes of other animals, the uniquely visible and well-defined sclera and iris of human eyes provides further evidence of its evolutionary importance for the species, and are thought to have developed as humans became more reliant upon complex communication for survival and reproductive success.
Sitting can be bad for your cardiovascular health — but beware of standing too long, a new study says. (Getty Creative) (Maskot via Getty Images) For years, research has repeatedly suggested ...
An eye movement shifts the orientation of the coil to induce an electric current, which is translated into horizontal and vertical eye position. The second technique is an eye tracker . This device, while somewhat more noisy, is non-invasive and is often used in human psychophysics and recently also in instructional psychology.