A positron emission tomography study during auditory localization by late-onset blind individuals

Neuroreport
Patrice VossFranco Lepore

Abstract

Individuals deprived of vision early in life often demonstrate exceptional abilities in their remaining sensory modalities in order to compensate for their handicap. Recent studies have shown that some of these abilities also extend to those who have lost their sight later in life. It is not clear, however, what mechanisms underlie these abilities. Here, we examined cortical activation using positron emission tomography in late-onset blind participants during a free-field auditory localization task. Even though no behavioral enhancements were observed in this testing condition relative to sighted controls, the results revealed that the occipital cortex was nonetheless activated during task execution. We conclude that late-onset blind individuals do manifest cerebral reorganization, although its functional relevance to the task is less clear.

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Citations

Sep 3, 2008·Experimental Brain Research·Olivier CollignonFranco Lepore
Jul 9, 2013·Brain : a Journal of Neurology·Olivier CollignonFranco Lepore
Dec 21, 2006·Neuroreport·Nadine GaabGottfried Schlaug
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May 1, 2010·Wiley Interdisciplinary Reviews. Cognitive Science·Patrice VossFranco Lepore
Sep 23, 2008·Behavioural Brain Research·Alexander A Stevens, Kurt E Weaver
Oct 26, 2013·Neuroscience and Biobehavioral Reviews·Emiliano RicciardiPietro Pietrini
Aug 26, 2009·Neuropsychologia·Catherine Y WanSarah J Wilson
Jan 27, 2015·Frontiers in Neural Circuits·Marie-Eve Laramée, Denis Boire
Jun 28, 2014·Frontiers in Human Neuroscience·Latifa Lazzouni, Franco Lepore
Jun 8, 2018·Wiley Interdisciplinary Reviews. Cognitive Science·Patrice Voss
Nov 13, 2018·Cerebral Cortex·Shipra KanjliaMarina Bedny
Jan 26, 2017·Frontiers in Neuroscience·Guangyang MaChunshui Yu
Jan 10, 2017·Frontiers in Psychology·Patrice Voss
Dec 19, 2017·Frontiers in Psychology·Elena Aggius-VellaMonica Gori
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