By Yvette Hatwell, Arlette Streri, Edouard Gentaz (Editors)

The dominance of imaginative and prescient is so powerful in sighted people who contact is usually regarded as a minor perceptual modality. notwithstanding, contact is a strong software which contributes considerably to our wisdom on area and items. Its in depth use via blind humans permits them to succeed in a similar degrees of information and cognition as their sighted friends. during this e-book, really good researchers current the hot country of data in regards to the cognitive functioning of contact. After an research of the neurophysiology and neuropsychology of contact, exploratory handbook behaviours, intramodal haptic (tactual-kinesthetic) talents and cross-modal visual-tactual coordination are tested in babies, little ones and adults, and in non-human primates. those reports crisis either sighted and blind people so that it will recognize no matter if early visible deprivation modifies the modes of processing area and gadgets. The final part is dedicated to the technical units favouring the college and social integration of the younger blind: Braille examining, use of raised maps and drawings, "sensory substitution" monitors, and new applied sciences of verbal exchange tailored for the blind.

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Behavioral and Brain Sciences, 25, 73–144. Penfield, W. & Rasmussen, T. (1950). The cerebral cortex of man: A clinical study of localization of function. New York: MacMillan. Pons, T. (1996a). Novel sensations in the congenitally blind. Nature, 380, 479–480. Pons, T. (1996b). Serial processing in the somatosensory system of macaques. In O. Franzen, R. Johansson, & L. ), Somesthesis and neurobiology of the somatosensory cortex (pp. 187–196). Berlin: Birkhäusen Verlag. Pubols, L. & Leroy, R. (1977).

The ascending tracts seem to be able to cross several levels without synaptic relays whereas the descending tracts rarely cross more than two levels. As we know that the time of   Edouard Gentaz cortical information processing increases with the number of synaptic relays, this suggests that the integration of descending information requires more time than does that of ascending information. For Felleman and Van Essen (1991), the processing power of our somaesthetic system depends on this distributed hierarchical organization.

Comparative perspectives (pp. 81–106). Hillsdale, NJ: Erlbaum. Stein, J. F. (1978). Effects of parietal lobe cooling on manipulation in the monkey. In G. ), Active touch (pp. 79–90). Oxford: Pergamon. , & Chapman, C. (2002). Haptic discrimination of object shape in human: Contribution of cutaneous and proprioceptive inputs. Experimental Brain Research, 145, 251–260. , & Gardner, E. (1986). Objective classification of motionand direction sensitive neurons in primary somatosensory cortex of awake monkeys.

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