By Zaira Cattaneo
Can a blind individual see? The very thought turns out paradoxical. the following the authors learn the consequences of blindness and different varieties of visible deficit at the improvement and functioning of the human cognitive system.
Read Online or Download Blind vision : the neuroscience of visual impairment PDF
Similar ophthalmology books
Gonioscopy is a vital differential diagnostic device that enables evaluation of the anterior chamber perspective and proper type of glaucoma as a foundation for particular therapy. This booklet truly explains the right way to practice gonioscopy to top influence. The anatomy of the chamber perspective is systematically defined, and the influence of age, developmental problems, and different pathologies at the chamber perspective is defined.
This e-book offers a precis and synthesis of present concerns and examine in the box of 1 of the main tough paediatric eye stipulations - Amblyopia.
Glaucoma impacts all age teams and is a number one reason for blindness all over the world. it's valuable that practising clinicians and surgeons realize either basic and secondary glaucoma in addition to situations of glaucoma linked to different issues. Atlas of Glaucoma, 3rd variation offers an in-depth evaluation and research of the administration of glaucoma and discusses study developments that experience led to the most recent remedies.
Fresh dramatic advances in analysis, in addition to scientific remedy, suggest so that you can provide your glaucoma sufferers extra well timed and potent interventions. quantity One during this brand-new medical reference makes a speciality of the diagnostic and healing points of glaucoma remedy, and the most recent imaging innovations similar to ultrasound biomicroscopy and optical coherence tomography in addition to new compounds, combos, and periods of substances.
- Primary Angle-Closure and Angle-Closure Glaucoma
- Medical Management of Glaucoma
- Ocular and Visual Physiology: Clinical Application
- Corneal Collagen Cross Linking
Extra info for Blind vision : the neuroscience of visual impairment
These ﬁndings suggest that blind individuals may have a superior capacity for decoding the spatial structure of the activated SA-I afferent array through central processing mechanisms (Goldreich and Kanics 2003). In a following study, Goldreich and Kanics (2006) found that (early and late) blind outperformed sighted subjects in a grating-detection task requiring that they distinguish a thinly grooved surface from a smooth one. Since SA-I receptors respond well to edges, grooved surfaces elicit overall a greater SA-I population response-magnitude than do smooth surfaces (and hence, unlike a grating-orientation task, successful grating detection does not rely on the activated SA-I spatial structure cue) (see Johnson and Phillips 1981).
Brisben, Hsiao, and Johnson 1999). , edge contours, Braille reading marks), being selectively sensitive to points, edges and curvatures. Rufﬁni corpuscles have a smaller spatial resolution due to their large and less localized receptive ﬁelds. Rufﬁni afferents are critical in providing the brain with motion signals from the whole hand: in fact, they signal skin-stretch accurately, and are thus important (together with proprioception receptors) in the perception of hand shape and ﬁnger position, both of which are critical for grip control.
S1 and S2 (solid speakers) were the two stationary loudspeakers, which were located at 30 degrees to the right and to the left of the median plane of the subject’s head in a circular arc with a 90 centimeter radius centered on the midpoint of the interocular axis, and used as the standard stimuli. C’s (blank speakers) indicate the locations of the movable speakers, and where the comparison sound was presented. The observer judged whether the apparent direction of the sound from one of C1, C3 and C5 (C2, C4 and C6) was right or left of that from S1 (S2).
Blind vision : the neuroscience of visual impairment by Zaira Cattaneo