Marta García-Fiñana

Learn More
It has long been suspected that cortical interhemispheric asymmetries may underlie hemispheric language dominance (HLD). To test this hypothesis, we determined interhemispheric asymmetries using stereology and MRI of three cortical regions hypothesized to be related to HLD (Broca's area, planum temporale, and insula) in healthy adults in whom HLD was(More)
The purpose of this study was to compare magnetic resonance imaging (MRI) against physical sectioning techniques to estimate the volume of human cerebral hemisphere compartments (cortex, subcortex, and their union, called "total"). The volume of these compartments was estimated postmortem for six human subjects from MRI virtual sections and from physical(More)
An approach to classifying magnetic resonance (MR) image data is described. The specific application is the classification of MRI scan data according to the nature of the corpus callosum, however the approach has more general applicability. A variation of the ''spectral segmentation with multi-scale graph decomposition " mechanism is introduced. The result(More)
The social brain hypothesis, an explanation for the unusually large brains of primates, posits that the size of social group typical of a species is directly related to the volume of its neocortex. To test whether this hypothesis also applies at the within-species level, we applied the Cavalieri method of stereology in conjunction with point counting on(More)
— An approach to Region Of Interest Based Image Classification (ROIBIC), based on a time series analysis approach, is described. The focus of the approach is the classification of MRI brain scan data according to the nature of the corpus callosum (a feature within such scans), however the approach also has general applicability. The advocated approach(More)
Intentionality, or Theory of Mind, is the ability to explain and predict the behaviour of others by attributing to them intentions and mental states and is hypothesised to be one of several social cognitive mechanisms which have impacted upon brain size evolution. Though the brain activity associated with processing this type of information has been studied(More)
The objective of this protocol was to provide a rapid, neurofunctionally relevant alternative to region-drawing or automated gyral/sulcal-based techniques. The Cavalieri method and point counting [e.g. Br. J. Radiol. 73 (2000) 679] were used in conjunction with a previously established parcellation methodology [Arch. Gen. Psychiatry 57 (2000) 761] to(More)
Region Of Interest Based Image Classification (ROIBIC) is a mechanism for categorising images according to some specific component or object that features across a given image set. This paper describes and compares two such approaches. The first is founded on a weighted graph mining technique whereby the ROI is represented using a tree structure which(More)
The identification and quantification of morphological alterations that occur in the brain due to neurological disease, development and ageing, is of special interest in brain research. Design-based stereological methods have been widely applied in combination with magnetic resonance (MR) imaging to estimate the volume of brain structures. In the Cavalieri(More)
The interaction between language and spatial laterality and its association with cognitive ability was explored in a group of 42 right-handers and 40 left-handers using functional magnetic resonance imaging. Cognitive ability measures including working memory, verbal comprehension and perceptual organisation were assessed using the Wechsler Adult(More)