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Are numbers special? The comparison systems of the human brain investigated by fMRI
FMRI results indicate that there are both commonalities and differences in the spatial layout of the brain systems for numerical and physical comparisons and that especially the left IPS, while involved in magnitude comparison in general, plays a special role in number comparison.
Can synaesthesia research inform cognitive science?
It is shown that results from the field of synaesthesia can constrain cognitive theories in numerical cognition, automaticity, crossmodal interaction and awareness, and could advance the understanding of the normal and abnormal human brain and cognition.
Notation-Dependent and -Independent Representations of Numbers in the Parietal Lobes
By using relatively smaller voxels together with an adaptation paradigm and analyzing subjects on an individual basis it is possible to detect specialized numerical representations and reveal a left/right asymmetry in parietal lobe function.
Developmental Dyscalculia: heterogeneity might not mean different mechanisms
This work looks at biological and cognitive findings within DD and delineates frameworks for studying the neurocognitive basis of DD and offers three alternative frameworks that have the potential of facilitating future discussions, work in the field and have implications for studies of similar disorders like dyslexia and attention-deficit/hyperactivity disorder.
Virtual Dyscalculia Induced by Parietal-Lobe TMS Impairs Automatic Magnitude Processing
People suffering from developmental dyscalculia encounter difficulties in automatically accessing numerical magnitudes [1-3]. For example, when instructed to attend to the physical size of a number…
The Brain Locus of Interaction between Number and Size: A Combined Functional Magnetic Resonance Imaging and Event-related Potential Study
- R. C. Kadosh, K. C. Kadosh, D. Linden, W. Gevers, A. Berger, A. Henik
- Psychology, Computer ScienceJournal of Cognitive Neuroscience
- 1 June 2007
The present study used functional magnetic resonance imaging and event-related potentials together with the size-congruity paradigm to conclude that the processing of magnitude can be subserved by shared or distinct neural substrates, depending on task requirements.
Induced Cross-Modal Synaesthetic Experience Without Abnormal Neuronal Connections
- R. Cohen Kadosh, A. Henik, A. Catena, Vincent Walsh, Luis J. Fuentes
- Psychology, MedicinePsychological science
- 1 February 2009
It is shown that posthypnotic suggestion induces abnormal cross-modal experience similar to that observed in congenital grapheme-color synaesthesia, and it is concluded that Synaesthesia can result from disinhibition between brain areas.
The Neuronal Correlate of Bidirectional Synesthesia: A Combined Event-related Potential and Functional Magnetic Resonance Imaging Study
- R. C. Kadosh, K. C. Kadosh, A. Henik
- Psychology, MedicineJournal of Cognitive Neuroscience
- 1 December 2007
The results support the genuineness of bidirectional synesthesia at the neuronal level, the possibility that discrepancy in the neuronal correlates of synesthesia between previous studies might be task-related, and theossibility that synesthesia might not be a unitary phenomenon.
Competition between endogenous and exogenous orienting of visual attention.
- A. Berger, A. Henik, R. Rafal
- Psychology, MedicineJournal of experimental psychology. General
- 1 May 2005
The results showed that each orienting mechanism developed its typical and independent effect in every case except for the difficult identification task.
The development of internal representations of magnitude and their association with Arabic numerals.
- O. Rubinsten, A. Henik, A. Berger, Sharon Shahar-Shalev
- Psychology, MedicineJournal of experimental child psychology
Developmental aspects of number concepts were evaluated using participants from the beginning and end of first grade, third and fifth grades, and university and a model of internal representation of magnitude claiming that there are two different representations was proposed.