Neglect Impairs Explicit Processing of the Mental Number Line
نویسندگان
چکیده
منابع مشابه
Neglect Impairs Explicit Processing of the Mental Number Line
Converging evidence suggests that visuospatial attention plays a pivotal role in numerical processing, especially when the task involves the manipulation of numerical magnitudes. Visuospatial neglect impairs contralesional attentional orienting not only in perceptual but also in numerical space. Indeed, patients with left neglect show a bias toward larger numbers when mentally bisecting a numer...
متن کاملExplicit versus Implicit Processing of Representational Space in Neglect: Dissociations in Accessing the Mental Number Line
The present study investigated the effects of left hemispatial neglect on two tasks activating the mental number line (MNL). Six patients with left neglect performed a mental number bisection task and a modified version of the Spatial Numerical Association of Response Codes (SNARC) task. Effects of left neglect were observed in the number bisection task, but not in the SNARC task. We argue that...
متن کاملNon-spatial neglect for the mental number line.
Several psychophysical investigations, expanding the classical introspective observations by Galton, have suggested that the mental representation of numbers takes the form of a number line along which magnitude is positioned in ascending order according to reading habits, i.e. from left to right in Western cultures. In keeping with the evidence, pathological rightward deviations in the bisecti...
متن کاملCalibrating the mental number line.
Human adults are thought to possess two dissociable systems to represent numbers: an approximate quantity system akin to a mental number line, and a verbal system capable of representing numbers exactly. Here, we study the interface between these two systems using an estimation task. Observers were asked to estimate the approximate numerosity of dot arrays. We show that, in the absence of calib...
متن کاملParietal rTMS distorts the mental number line: simulating 'spatial' neglect in healthy subjects.
Patients with left-sided visuospatial neglect, typically after damage to the right parietal lobe, show a systematic bias towards larger numbers when asked to bisect a numerical interval. This has been taken as further evidence for a spatial representation of numbers, perhaps akin to a mental number line with smaller numbers represented to the left and larger numbers to the right. Previously, co...
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ژورنال
عنوان ژورنال: Frontiers in Human Neuroscience
سال: 2012
ISSN: 1662-5161
DOI: 10.3389/fnhum.2012.00125