Furthermore, tactile spatial acuity differs subtly between the sexes, with women able to indicate finer GOT thresholds detail than men in healthy subjects .
Cohen, "Enhanced tactile spatial acuity and cortical processing during acute hand deafferentation," Nature Neuroscience, vol.
Washington, June 7 ( ANI ): A new study has revealed that identifying where it hurts known as 'spatial acuity
' differs across the body parts.
We applied the maximum-contrast method in our study as a basis for exploring and ensuring optimal tactile acuity, which provides a smaller range of spatial acuity
than the visual field (Golledge, 1993).
Playing with blocks has long been a favorite pastime of children and one that parents often encourage as a means of developing reasoning, spatial acuity
, and other skills.
, defined as the highest visible spatial frequency one can distinguish, is roughly 40-50 cycles/deg for human foveal vision with gratings of high contrast (Bruce, Green, and Georgeson, 1996).
Under optimal conditions, spatial acuity
of the visual system is finer than that of the auditory system, but auditory spatial resolution is sufficient to guide the field of best vision to the location of an acoustic source (Heffner & Heffner, 1992).
The values of [T.sub.s] and [Zeta] allow a conservative estimate of the highest retinal slip speed that does not decrease spatial acuity. This estimate is conservative because we have underestimated the [Zeta] by using [Delta][[Phi].sub.h], and we have overestimated [T.sub.s] by using dark adapted animals, which have a longer flash response than light adapted ones (6).
This far exceeds observed retinal slip speeds, suggesting some other reason for image stability unrelated to spatial acuity. Indeed, this maximum slip speed limit is only approached in animals that actively scan the environment with their eyes, primarily to enlarge the visual field [spiders, planktonic mollusks and crustaceans (6), but see stomatopods (2)].
Because human echolocation is often discussed as an auditory perceptual aid in navigation and object perception, it is appropriate to investigate quantitatively detection thresholds and the limits of spatial acuity
that human echolocation affords its practitioners.