Analogue versus propositional representation in congenitally blind individuals.
نویسندگان
چکیده
Congenitally blind individuals are generally less accurate at mentally manipulating objects than sighted people. However, they often score higher on tests of short- and long-term verbal memory, and it has been suggested that an enhanced propositional representation compensates for inefficiencies in analogue visuospatial representation. Here, congenitally blind, blindfolded, and sighted participants recalled descriptions of relative object locations. In contrast to previous findings, the congenitally blind participants were as accurate as the blindfolded and sighted individuals at remembering the relative locations of objects, but their memory for the verbatim structure of presented descriptions was worse. We propose that, like sighted people, the congenitally blind spontaneously construct and remember analogue representations of object locations and that the performance discrepancies of the blind arise from the process of managing and manipulating these analogue representations.
منابع مشابه
Theory of mind and its neural mechanisms: A case study of Kurdish-Persian congenitally blind children in Ilam city
Introduction: Theory of mind is one of the most important aspects of cognitive faculty. The theory of mind is impaired in individuals who suffer from mental disorders like autistic children. The ‘autistic-like’ behaviors also have been reported in the congenitally blind children. This study was conducted to examine the presence or absence of theory of mind and its function in congen...
متن کاملSpatial imagery relies on a sensory independent, though sensory sensitive, functional organization within the parietal cortex: a fMRI study of angle discrimination in sighted and congenitally blind individuals.
Although vision offers distinctive information to space representation, individuals who lack vision since birth often show perceptual and representational skills comparable to those found in sighted individuals. However, congenitally blind individuals may result in impaired spatial analysis, when engaging in 'visual' spatial features (e.g., perspective or angle representation) or complex spatia...
متن کاملThe parietal distance effect appears in both the congenitally blind and matched sighted controls in an acoustic number comparison task.
Visual world experience is thought to play a significant role in the development of an abstract representation of quantity in the human brain. Nevertheless, some congenitally blind individuals demonstrate excellent numerical abilities. We show that blind adults have a phenomenologically normal semantic representation of number. Electro-encephalography data demonstrate that the numerical distanc...
متن کاملA sensitive period for language in the visual cortex: distinct patterns of plasticity in congenitally versus late blind adults.
Recent evidence suggests that blindness enables visual circuits to contribute to language processing. We examined whether this dramatic functional plasticity has a sensitive period. BOLD fMRI signal was measured in congenitally blind, late blind (blindness onset 9-years-old or later) and sighted participants while they performed a sentence comprehension task. In a control condition, participant...
متن کاملEnhanced Chemosensory Detection of Negative Emotions in Congenital Blindness
It is generally acknowledged that congenitally blind individuals develop superior sensory abilities in order to compensate for their lack of vision. Substantial research has been done on somatosensory and auditory sensory information processing of the blind. However, relatively little information is available about compensatory plasticity in the olfactory domain. Although previous studies indic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Psychonomic bulletin & review
دوره 13 6 شماره
صفحات -
تاریخ انتشار 2006