1. Regional Cerebral Blood Flow Miranda, Sarah, Tabea, Kirsten

2. Overview Intro Intro Mainpart Mainpart - Aim - Aim - Techniques - Techniques Conclusion Conclusion - Results - Results

3. Introduction cerebral activation cerebral activation deaf and hearing subjects deaf and hearing subjects with deaf parents with deaf parents deaf group depended more on spatial components deaf group depended more on spatial components

4. Mainparts Aim: compare sign language lateralization and localization between hearing and deaf children of deaf parents Aim: compare sign language lateralization and localization between hearing and deaf children of deaf parents Techniques: high resolution rCBF system with 254 stationary detectors and 133 xenon inhalation used to measure Techniques: high resolution rCBF system with 254 stationary detectors and 133 xenon inhalation used to measure

5. Conclusion Results: deafness is the factor that explains differences in cortical activation Results: deafness is the factor that explains differences in cortical activation The enhanced right hemisphere parieto-occipital activation is an effect of a lack of auditory stimulation and of early learning of a visual- spatial language The enhanced right hemisphere parieto-occipital activation is an effect of a lack of auditory stimulation and of early learning of a visual- spatial language This combination creates a different organization of language systems in the brain This combination creates a different organization of language systems in the brain