Can you tell your clunis from your cubitus? A benchmark for functional imaging
| Autor: | Arjan Hillebrand, Paul L. Furlong, Ian E. Holliday, Alison E. Fisher, Gareth R. Barnes, Caroline Burrow |
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| Rok vydání: | 2004 |
| Předmět: |
Adult
Male medicine.diagnostic_test Computer science Images of Health General Engineering Magnetoencephalography Somatosensory Cortex General Medicine Index finger Anatomy Electroencephalography Somatosensory system Electric Stimulation Functional imaging medicine.anatomical_structure Positron emission tomography medicine Humans General Earth and Planetary Sciences Female Functional magnetic resonance imaging Neuroscience General Environmental Science |
| Zdroj: | BMJ. 329:1492.2-1493 |
| ISSN: | 1468-5833 0959-8138 1756-1833 |
| DOI: | 10.1136/bmj.329.7480.1492-a |
| Popis: | Advances in functional brain imaging have allowed the development of new investigative techniques with clinical application—ranging from presurgical mapping of eloquent cortex to identifying cortical regions involved in religious experiences. Similarly a variety of methods are available to referring physicians, ranging from metabolic measures such as functional magnetic resonance imaging and positron emission tomography to measurements based on electrical activity such as electroencephalography and magnetoencephalography. However, there are no universal benchmarks by which to judge between these methods. In this study we attempt to develop a standard for functional localisation, based on the known functional organisation of somatosensory cortex. Studies have shown spatially distinct sites of brain activity in response to stimulation of various body parts. Generally these studies have focused on areas with large cortical representations, such as the index finger and face. We tested the limits of magnetoencephalography source localisation by stimulation of body parts, namely the clunis and the cubitus, that map to proximal and relatively poorly represented regions of somatosensory cortex. |
| Databáze: | OpenAIRE |
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