Dissociation Between Order and Quantity Meanings in a Patient with Gerstmann Syndrome

Turconi, Eva; Serón, Xavier

doi:10.1016/s0010-9452(08)70069-8

Cited by 62 publications

(45 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…questions, suggesting that the sequential meaning of numbers was preserved. The reverse dissociation was reported by Turconi and Seron [25]. They described a patient with right parietal lesion who was impaired in processing the order of words that denote ordinal information (i.e., numbers, letters, days and months) in various tasks, while showing better performance in processing quantity information.…”

Section: Ordinality and Quantitymentioning

confidence: 68%

Processing Ordinality and Quantity: The Case of Developmental Dyscalculia

Rubinsten¹

2011

PsycEXTRA Dataset

View full text Add to dashboard Cite

In contrast to quantity processing, up to date, the nature of ordinality has received little attention from researchers despite the fact that both quantity and ordinality are embodied in numerical information. Here we ask if there are two separate core systems that lie at the foundations of numerical cognition: (1) the traditionally and well accepted numerical magnitude system but also (2) core system for representing ordinal information. We report two novel experiments of ordinal processing that explored the relation between ordinal and numerical information processing in typically developing adults and adults with developmental dyscalculia (DD). Participants made ''ordered'' or ''non-ordered'' judgments about 3 groups of dots (non-symbolic numerical stimuli; in Experiment 1) and 3 numbers (symbolic task: Experiment 2). In contrast to previous findings and arguments about quantity deficit in DD participants, when quantity and ordinality are dissociated (as in the current tasks), DD participants exhibited a normal ratio effect in the non-symbolic ordinal task. They did not show, however, the ordinality effect. Ordinality effect in DD appeared only when area and density were randomized, but only in the descending direction. In the symbolic task, the ordinality effect was modulated by ratio and direction in both groups. These findings suggest that there might be two separate cognitive representations of ordinal and quantity information and that linguistic knowledge may facilitate estimation of ordinal information.Citation: Rubinsten O, Sury D (2011) Processing Ordinality and Quantity: The Case of Developmental Dyscalculia. PLoS ONE 6(9): e24079.

show abstract

Section: Ordinality and Quantitymentioning

confidence: 68%

Processing Ordinality and Quantity: The Case of Developmental Dyscalculia

Rubinsten¹

2011

PsycEXTRA Dataset

View full text Add to dashboard Cite

show abstract

“…Further support for partial segregation comes from neuropsychological studies with patients suffering from Gerstmann syndrome after parietal lesions. Although a joint impairment of the processing of numerical and non-numerical order has been described (Cipolotti et al, 1991), a case with preserved number comparison in the presence of impaired letter comparison has also been documented (Turconi and Seron, 2002).…”

Section: Discussionmentioning

confidence: 99%

Processing of Abstract Ordinal Knowledge in the Horizontal Segment of the Intraparietal Sulcus

Fias¹,

Lammertyn²,

Caessens³

et al. 2007

J. Neurosci.

137

View full text Add to dashboard Cite

The anterior intraparietal sulcus, and more specifically its horizontal segment (hIPS), is known to play a crucial role in the cognitive representation of numerical quantity. Whether the involvement of hIPS is restricted to the processing of numerical information or generalizes to non-numerical ordinal dimensions remains an open question. Using functional magnetic resonance imaging during comparison tasks, we demonstrate that the hIPS is equally responsive to numbers and letters, indicating that hIPS is also involved in the representation and processing of non-numerical ordinal series. This extends the numerical processing function of IPS into the realm of abstract knowledge processing.

show abstract

“…This raises again the question of whether ordinality might be the common feature subtending the similarity between number and time and whether time is processed in the same network devoted to numbers. However, as noted before, this contention is challenged by neuropsychological dissociations between ordinal and magnitude judgments on numerical stimuli (Turconi and Seron, 2002), as well as by the finding that the apparent overlap in fMRI activation during processing of numerical and non-numerical order can be resolved into distinct voxel clusters by multivariate pattern classifiers .…”

Section: Ordermentioning

confidence: 98%

“…The issue is in fact controversial, because some studies (e.g. Turconi et al, 2006;Turconi and Seron, 2002) argued for largely (though not fully) independent processing of order and numerical magnitude.…”

Section: The Ordinality Issuementioning

confidence: 99%

When time is space: Evidence for a mental time line

Bonato

Zorzi

Umiltà

2012

Neuroscience & Biobehavioral Reviews

300

285

View full text Add to dashboard Cite

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. Author's personal copy Neuroscience and Biobehavioral Reviews 36 (2012) 2257-2273 Contents lists available at SciVerse ScienceDirectNeuroscience and Biobehavioral Reviews For instance, time-space interactions have been described as a strong preference to associate the past with the left space and the future with the right space. Here we review the growing evidence of interactions between time and space processing, systematized according to the type of interaction being investigated. We present the empirical findings supporting the possibility that humans represent the subjective time flow on a spatially oriented "mental time line" that is accessed through spatial attention mechanisms. The heterogeneous time-space interactions are then compared with the number-space interactions described in the numerical cognition literature. An alternative hypothesis, which maintains a common system for magnitude processing, including time, space, and number, is also discussed. Finally, we extend the discussion to the more general issue of how the representation of these concepts might be grounded into the cortical circuits that support spatial attention and sensorimotor transformations.

show abstract

Dissociation Between Order and Quantity Meanings in a Patient with Gerstmann Syndrome

Cited by 62 publications

References 4 publications

Processing Ordinality and Quantity: The Case of Developmental Dyscalculia

Processing Ordinality and Quantity: The Case of Developmental Dyscalculia

Processing of Abstract Ordinal Knowledge in the Horizontal Segment of the Intraparietal Sulcus

When time is space: Evidence for a mental time line

Contact Info

Product

Resources

About