Blind Vision: The Neuroscience of Visual Impairment by Zaira Cattaneo

By Zaira Cattaneo

I might hugely suggest Blind imaginative and prescient: The Neuroscience of visible Impairment… The e-book is obviously written and good documented, in addition to being the one one who i'm conscious of that tackles this crucial yet seldom mentioned learn zone. -- Paula Goolkasian, PsycCRITIQUES

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Liotti, Ryder, and Woldorff 1998) found that even when the task was adjusted to each participant’s sound threshold, early blind subjects were faster at detecting changes in sound intensity in a dichotic listening paradigm. Given that sensory discrimination differences were controlled for, faster responses depended on attention-based mechanisms. Rokem and Ahissar (2009) have specifically investigated the role of improved auditory processing in determining superior auditory memory in the blind. Specifically, the authors measured both cognitive and perceptual abilities in congenitally blind individuals and in a group of matched sighted controls.

1999), requiring participants to identify infrequent deviant sounds emanating from the most peripheral or most central speaker out of an eightspeaker array placed on the horizontal azimuth. Subjects had to ignore sounds coming from all other speakers. Blind and sighted subjects performed equally well at detecting deviant stimuli coming from the central auditory space; however, when asked to detect deviant sounds coming from the most peripheral speaker, blind outperformed sighted subjects, thus demonstrating superior auditory capabilities in far-lateral space.

Critically, since perceptual consolidation can be regarded as the encoding phase of working memory that logically precedes the maintenance phase, improved perceptual consolidation mechanisms in the early blind might also be interpreted as an index of enhanced auditory working-memory capacity. 7 Touch When we touch a surface or manipulate objects, we are engaged in a haptic experience. According to Loomis and Lederman (1986) the phrase “haptic perception” refers to the combined use of cutaneous and kinesthetic sense, and generally, it is an “active” experience under the individual’s own control (see also Lederman and Klatzky 2009).

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