Journal of Cognitive Neuroscience
Verbal working memory load affects regional brain activation as measured by pet
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Images of the mind: brain images and neural networks
Emergent neural computational architectures based on neuroscience
Capacity Limits in Diagrammatic Reasoning
Diagrams '00 Proceedings of the First International Conference on Theory and Application of Diagrams
Images of the Mind: Brain Images and Neural Networks
Emergent Neural Computational Architectures Based on Neuroscience - Towards Neuroscience-Inspired Computing
Blood oxygenation level dependent functional magnetic resonance imaging
Concepts in Magnetic Resonance: an Educational Journal - Functional magnetic resonance imaging
Neural Topography and Content of Movement Representations
Journal of Cognitive Neuroscience
Response-Selection-Related Parietal Activation during Number Comparison
Journal of Cognitive Neuroscience
Neural Bases of Talker Normalization
Journal of Cognitive Neuroscience
Effects of Strategies on Mental Rotation and Hemispheric Lateralization: Neuropsychological Evidence
Journal of Cognitive Neuroscience
Imagined Viewer and Object Rotations Dissociated with Event-Related fMRI
Journal of Cognitive Neuroscience
Parietal Lobe Contribution to Mental Rotation Demonstrated with rTMS
Journal of Cognitive Neuroscience
Brain Areas Specific for Attentional Load in a Motion-Tracking Task
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Capacity Theory as a Model of Cortical Behavior
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Proceedings of the international conference on Spatial Cognition VI: Learning, Reasoning, and Talking about Space
Journal of Cognitive Neuroscience
Causal role of the sensorimotor cortex in action simulation: Neuropsychological evidence
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
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Two studies examined how the amount and type of computational demand are related to fMRI-measured activation in three bilateral cortical regions involved in the Shepard-Metzler (1971) mental-rotation paradigm. The amount of demand for the computation of visuospatial coordinates was manipulated by presenting mental rotation problems with increasing angular disparity (0, 40, 80, or 120°). Activation in both the left and right intraparietal sulcal regions increased linearly with angular disparity in two separate studies. Activation also occurred in the fusiform gyrus and inferior temporal regions, regions that are primarily associated with the processes of object and object-part identification. By contrast, the demand for object recognition and rotation processes was relatively low, and the demand for executing saccades was high in a control condition that required making a systematic visual scan of two grids. The grid-scanning condition resulted in relatively less activation in the parietal and inferior temporal regions but considerable activation in frontal areas that are associated with planning and executing saccades, including the precentral gyrus and sulcus into the posterior middle frontal region.These data suggest that the amount of activation in the various cortical regions that support visuospatial processing is related to the amount, as well as to the type, of computational demand.