Ewald Hering's model, published 1899, of how a Vernier acuity stimulus is coded by a receptor array. Receptors marked c signal a different position code along the horizontal direction from either the position a code or the position b code.[1]
The sharpness of our senses is defined by the finest detail we can discriminate. Visual acuity is measured by the smallest letters that can be distinguished on a chart and is governed by the anatomical spacing of the mosaic of sensory elements on the retina. Yet spatial distinctions can be made on a finer scale still: misalignment of borders can be detected with a precision up to 10 times better than visual acuity, as already shown by Ewald Hering in 1899.[1] This hyperacuity, transcending by far the size limits set by the retinal 'pixels', depends on sophisticated information processing in the brain.
^ abStrasburger, Hans; Huber, Jörg; Rose, David (2018). "Ewald Hering (1899) On the Limits of Visual Acuity: A Translation and Commentary. With a Supplement on Alfred Volkmann (1863) Physiological Investigations in the Field of Optics". i-Perception. 9 (3): 204166951876367. doi:10.1177/2041669518763675. PMC 5990881. PMID 29899967.
Details of the neural apparatus for achieving hyperacuity still await discovery. That the hyperacuity apparatus involves signals from a range of individual...
advantage of visual hyperacuity, also known as vernier acuity—the ability to identify the misalignment of visual objects. Visual hyperacuity is at least 10...
much research in color vision, binocular perception, eye movements, and hyperacuity. He proposed opponent color theory in 1892. Born in Alt-Gersdorf, Kingdom...
Historically, none of the alternative technologies exploited this or any other hyperacuity, giving the vernier scale an advantage over its competitors. Zero error...
astronomer Pierre Vernier) is a type of visual acuity – more precisely of hyperacuity – that measures the ability to discern a disalignment among two line...
counterpart, Tone Center Records, he returned to his familiar style with Hyperacuity (2000), which still stands as some of his most prominent experimentation...
predicts the perception of the non-circularly distributed white pixel. Hyperacuity People report discrimination much finer than can be predicted by interpolating...
CNV can be detected by using a type of perimetry called preferential hyperacuity perimetry. On the basis of fluorescein angiography, CNV may be described...
use of assessments such as a psychophysical test called preferential hyperacuity perimetry, which assesses a person's ability to any misalignments of...
Humans can do this with remarkable accuracy. This success is regarded as hyperacuity. Under optimal conditions of good illumination, high contrast, and long...
addition to the above tests: Preferential hyperacuity perimetry changes (for wet AMD). Preferential hyperacuity perimetry is a test that detects drastic...
When it was not, there were negative results. This is suggestive of a hyperacuity of hearing, especially since on at least one occasion Murray complained...
ISBN 0-7020-1790-6 Geisler, W.S. (1984), "Physical limits of acuity and hyperacuity" (PDF), Journal of the Optical Society of America A, 1 (7): 775–782,...
When it was not, there were negative results. This is suggestive of a hyperacuity of hearing, especially since on at least one occasion Murray complained...
differences of either object distances, or angle of disparity, makes it a hyperacuity. Since the Howard-Dolman test described above is cumbersome, stereoacuity...
book was the main basis on which Ewald Hering developed his theory of hyperacuity in 1899. Philosophically, Volkmann was an evangelical who opposed materialism...
of Physiology, 190, 139–154. Westheimer, G. (1975). Visual acuity and hyperacuity. Investigative Ophthalmology, 14, 570–572. Gilbert, C., Ito, M., Kapadia...
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