@article {1809, title = {Effects of prone and supine position on cerebral blood flow in preterm infants.}, journal = {J Pediatr}, volume = {160}, year = {2012}, month = {2012 Jan}, pages = {162-4}, abstract = {

We evaluated the effect of prone and supine position on cerebral blood flow (CBF) in stable preterm infants. CBF, PO(2), and PCO(2) were measured in the two positions. Peripheral oxygenation increased and CBF decreased in prone position. We speculate that CBF autoregulation may compensate for increased peripheral oxygenation, by decreasing CBF.

}, keywords = {Cerebrovascular Circulation, Female, Humans, Infant, Newborn, Infant, Premature, Male, Prone Position, Regional Blood Flow, Supine Position}, issn = {1097-6833}, doi = {10.1016/j.jpeds.2011.08.056}, author = {Bembich, Stefano and Oretti, Chiara and Travan, Laura and Clarici, Andrea and Massaccesi, Stefano and Demarini, Sergio} } @article {1783, title = {Non-invasive assessment of hemispheric language dominance by optical topography during a brief passive listening test: a pilot study.}, journal = {Med Sci Monit}, volume = {17}, year = {2011}, month = {2011 Dec}, pages = {CR692-7}, abstract = {

BACKGROUND: The Wada test is usually used for pre-surgical assessment of language lateralization. Considering its invasiveness and risk of complications, alternative methods have been proposed but they are not always applicable to non-cooperative patients. In this study we explored the possibility of using optical topography (OT)--a multichannel near-infrared system--for non-invasive assessment of hemispheric language dominance during passive listening.

MATERIAL/METHODS: Cortical activity was monitored in a sample of healthy, adult Italian native speakers, all right-handed. We assessed changes in oxy-haemoglobin concentration in temporal, parietal and posterior frontal lobes during a passive listening of bi-syllabic words and vowel-consonant-vowel syllables lasting less then 3 minutes. Activated channels were identified by t tests.

RESULTS: Left hemisphere showed significant activity only during the passive listening of bi-syllabic words. Specifically, the superior temporal gyrus, the supramarginal gyrus and the posterior inferior parietal lobe were activated.

CONCLUSIONS: During passive listening of bi-syllabic words, right handed healthy adults showed a significant activation in areas already known to be involved in speech comprehension. Although more research is needed, OT proved to be a promising alternative to the Wada test for non-invasive assessment of hemispheric language lateralization, even if using a particularly brief trial, which has been designed for future applications with non-cooperative subjects.

}, keywords = {Acoustic Stimulation, Adult, Cerebrum, Diagnostic Techniques and Procedures, Dominance, Cerebral, Female, Humans, Language, Male, Middle Aged, Oxyhemoglobins, Pilot Projects, Spectroscopy, Near-Infrared}, issn = {1643-3750}, author = {Bembich, Stefano and Demarini, Sergio and Clarici, Andrea and Massaccesi, Stefano and Grasso, Domenico Loenardo} }