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Estimation of the Probabilities of 3D Clusters in Functional Brain Images
The interpretation of functional brain images is often hampered by the presence of noise. This problem is most commonly solved by using a statistical method and only considering signals that are… Expand
Supplementary motor area and other cortical areas in organization of voluntary movements in man.
1. Previous studies in man have revealed a coupling between the regional cerebral blood flow (rCBF) and the regional cerebral metabolic rate for oxygen. In normal man, increases in the regional… Expand
Illusory Arm Movements Activate Cortical Motor Areas: A Positron Emission Tomography Study
- E. Naito, H. Ehrsson, S. Geyer, K. Zilles, P. Roland
- Psychology, Medicine
- The Journal of Neuroscience
- 15 July 1999
Vibration at ∼70 Hz on the biceps tendon elicits a vivid illusory arm extension. Nobody has examined which areas in the brain are activated when subjects perceive this kinesthetic illusion. The… Expand
Does mental activity change the oxidative metabolism of the brain?
- P. Roland, L. Eriksson, S. Stone-Elander, L. Widén
- Biology, Medicine
- The Journal of neuroscience : the official…
- 1 August 1987
Previous studies have shown that sensory stimulation and voluntary motor activity increase regional cerebral glucose consumption and regional cerebral blood flow (rCBF). The present study had 3… Expand
Shape and roughness activate different somatosensory areas in the human brain.
- P. Roland, B. O'Sullivan, R. Kawashima
- Biology, Medicine
- Proceedings of the National Academy of Sciences…
- 17 March 1998
Somatosensory stimuli are known to activate the postcentral gyrus, and neurons there fire when the skin is in contact with objects. Also neurons in the lateral fissure, the parietal operculum, fire… Expand
Functions and structures of the motor cortices in humans
Humans and non-human primates have several motor areas. Exactly how many is a matter of current debate. A proper parcellation of motor areas must be based on correlated structural and functional… Expand
Activation by Attention of the Human Reticular Formation and Thalamic Intralaminar Nuclei
It has been known for over 45 years that electrical stimulation of the midbrain reticular formation and of the thalamic intralaminar nuclei of the brain alerts animals. However, lesions of these… Expand
Hierarchical Processing of Tactile Shape in the Human Brain
It is not known exactly which cortical areas compute somatosensory representations of shape. This was investigated using positron emission tomography and cytoarchitectonic mapping. Volunteers… Expand
Vibratory stimulation increases and decreases the regional cerebral blood flow and oxidative metabolism: a positron emission tomography (PET) study
The aim of this study was to examine the hypothesis, if the activation of some cerebral structures due to physiological stimulation is accompanied by deactivations of other structures elsewhere in… Expand
Brain atlases - a new research tool
Conventional brain atlases are collections of micrographs or schematic drawings of brain sections from one or a few brains in which anatomical structures are identified, for example, nuclei, cortical areas and fibre tracts. Expand