Activation of attention networks using frequency analysis of a simple auditory-motor paradigm
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Ημερομηνία
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Εκδότης
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peer-reviewed
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Όνομα συνεδρίου
Όνομα περιοδικού
Neuroimage
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Περιγραφή
The purpose of this study was to devise a paradigm that stimulates attention using a frequency-based analysis of the data acquired during a motor task. Six adults (30-40 years of age) and one child (10 years) were studied. Each subject was requested to attend to "start" and "stop" commands every 20 s alternatively and had to respond with the motor task every second time. Attention was stimulated during a block-designed, motor paradigm in which a start-stop commands cycle produced activation at the fourth harmonic of the motor frequency. We disentangled the motor and attention functions using statistical analysis with subspaces spanned by vectors generated by a truncated trigonometric series of motor and attention frequency. During our auditory-motor paradigm, all subjects showed activation in areas that belong to an extensive attention network. Attention and motor functions were coactivated but with different frequencies. While the motor-task-related areas were activated with slower frequency than attention, the activation in the attention-related areas was enhanced every time the subject had to start or end the motor task. We suggest that although a simple block-designed, auditory-motor paradigm stimulates the attention network, motor preparation, and motor inhibition concurrently, a frequency-based analysis can distinguish attention from motor functions. Due to its simplicity the paradigm can be valuable in studying children with attention deficit disorders.
Περιγραφή
Λέξεις-κλειδιά
Adult, Arousal/*physiology, Attention/*physiology, Brain Mapping, Cerebral Cortex/*physiology, Child, Dominance, Cerebral/physiology, Female, Humans, Image Processing, Computer-Assisted, *Magnetic Resonance Imaging, Male, Nerve Net/*physiology, Psychomotor Performance/*physiology, Reference Values, Speech Perception/*physiology
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/11906236
http://ac.els-cdn.com/S1053811901910353/1-s2.0-S1053811901910353-main.pdf?_tid=2905af337eac51a02ba97aef26f1fc17&acdnat=1333446777_09ea68d0d0ad030f990e0dc2e58e1b7b
http://ac.els-cdn.com/S1053811901910353/1-s2.0-S1053811901910353-main.pdf?_tid=2905af337eac51a02ba97aef26f1fc17&acdnat=1333446777_09ea68d0d0ad030f990e0dc2e58e1b7b
Γλώσσα
en
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Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής