What are the causes of postural tachycardia syndrome (PoTS)? The cause of PoTS is often unknown or may follow after a viral infection. PoTS is often not associated with any other condition. However, PoTS may sometimes be associated with various conditions, including: Other causes of problems with the autonomic nervous system - for example, diabetes. Ehlers-Danlos syndrome.
Definition of metacognition. : awareness or analysis of one's own learning or thinking processes research on metacognition â¦ has demonstrated the value of monitoring one's own cognitive processes â Colette A. Daiute.
Spherical aberration is an optical effect observed in an optical device (lens, mirror, etc.) that occurs due to the increased refraction of light rays when they strike a lens or a reflection of light rays when they strike a mirror near its edge, in comparison with those that strike nearer the centre.pherical aberration of collimated light incident on a concave spherical mirror. A spherical lens has an aplanatic point (i.e., no spherical aberration) only at a radius that equals the radius of the sphere divided by the index of refraction of the lens material.