Lecture notes of a Speech Science class in pdf, PowerPoint and Flash format
to auditory speech brain cerebellum by asterix on Jan 19, 2008, 9:21 PMLecture notes of a Speech Science class in pdf, PowerPoint and Flash format
to auditory speech brain cerebellum by asterix on Jan 19, 2008, 9:20 PMMalnutrition and hypermetabolism are not risk factors for the presence of hepatic encephalopathy: A cross-sectional study
to nutrition medical hepatic medicine hepatology encephalopathy cirrhosis by asterix on Dec 4, 2007, 1:53 AMMalnutrition and hypermetabolism are not risk factors for the presence of hepatic encephalopathy: A cross-sectional study
to nutrition medical hepatic medicine hepatology encephalopathy cirrhosis by asterix on Dec 4, 2007, 1:51 AMFocal lesions of the frontal, parietal and temporal lobe may interfere with tactile working memory and attention. To characterise the neural correlates of ...Focal lesions of the frontal, parietal and temporal lobe may interfere with tactile working memory and attention. To characterise the neural correlates of intact vibrotactile working memory and attention, functional MRI was conducted in 12 healthy young adults. Participants performed a forced-choice vibrotactile frequency discrimination task, comparing a cue stimulus of fixed frequency to their right thumb with a probe stimulus of identical or higher frequency. To investigate working memory, the time interval between the 2 stimuli was pseudo-randomized (either 2 or 8 s). To investigate selective attention, a distractor stimulus was occasionally presented contralaterally, simultaneous to the probe.
Results
Delayed vibrotactile frequency discrimination, following a probe presented 8 s after the cue in contrast to a probe presented 2 s after the cue, was associated with activation in the bilateral anterior insula and the right inferior parietal cortex. Frequency discrimination under distraction was correlated with activation in the right anterior insula, in the bilateral posterior parietal cortex, and in the right middle temporal gyrus.
Conclusion
These results support the notion that working memory and attention are organised in partly overlapping neural circuits. In contrast to previous reports in the visual or auditory domain, this study emphasises the involvement of the anterior insula in vibrotactile working memory and selective attention.
to Somatosensory fMRI by asterix on Jul 29, 2007, 1:46 PMThese results suggest that neuronal and membrane functions are important for rapid auditory processing. This investigation provides a first link between th...These results suggest that neuronal and membrane functions are important for rapid auditory processing. This investigation provides a first link between the electrophysiology, as recorded by magnetoencephalography, and the neurochemistry, as assessed by proton magnetic resonance spectroscopy, of the auditory cortex.
to neuroscience auditory Magnetic Resonance Imaging magnetoencephalography Spectroscopy Habituation by asterix on Sep 1, 2006, 4:41 AM- to neuroscience research by asterix on Aug 6, 2006, 4:01 AM
To investigate the neural network of overt speech production, event-related fMRI was performed in 9 young healthy adult volunteers. A clustered image acqui...To investigate the neural network of overt speech production, event-related fMRI was performed in 9 young healthy adult volunteers. A clustered image acquisition technique was chosen to minimize speech-related movement artifacts. Functional images were acquired during the production of oral movements and of speech of increasing complexity (isolated vowel as well as monosyllabic and trisyllabic utterances). This imaging technique and behavioral task enabled depiction of the articulo-phonologic network of speech production from the supplementary motor area at the cranial end to the red nucleus at the caudal end. Speaking a single vowel and performing simple oral movements involved very similar activation of the cortical and subcortical motor systems. More complex, polysyllabic utterances were associated with additional activation in the bilateral cerebellum, reflecting increased demand on speech motor control, and additional activation in the bilateral temporal cortex, reflecting the stronger involvement of phonologic processing.
to speech fMRI Cortex/physiology by asterix on Aug 1, 2006, 1:18 AMMEG study - Biomag PPoster
to auditory magnetoencephalography by asterix on May 30, 2006, 1:37 AMfMRI group at Sunnybrook, Troronto
to neuroscience fMRI, by asterix on May 30, 2006, 1:33 AM- to neuroscience auditory magnetoencephalography by asterix on May 30, 2006, 1:27 AM
Papers on neuroscience, neurology, fMRI, MEG
to neuroscience fmri neurology magnetoencephalography by asterix on May 30, 2006, 1:22 AM- to osx software Mac Research bibliography by asterix and 1 other person on May 22, 2006, 3:13 AM
- to software mac research bibliography by asterix on May 22, 2006, 3:13 AM
- to osx software bibtex Mac LaTeX research bibliography by asterix and 12 other people on May 22, 2006, 3:12 AM
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- to bioelectromagnetism electrophysiology magnetoencephalography by asterix and 1 other person on May 22, 2006, 3:09 AM
social bookmarking for researchers
to neuroscience research by asterix and 3 other people on May 21, 2006, 1:18 PM- to fmri software research by asterix on May 20, 2006, 1:29 AM
- to neuroscience fmri headache neurology pain magnetoencephalography research by asterix on May 18, 2006, 2:05 AM
