neuroimaging of reading
DESCRIPTION
Michael Smith Foundation for Health Research. Neuroimaging of Reading. Dr. Tony Herdman Michael Smith Scholar Assistant Professor Department of Psychology, SFU. Supported by:. Overview. Brain Networks Models of Reading and Language Orthographic Processing Letter-Speech Integration. - PowerPoint PPT PresentationTRANSCRIPT
A love affair with MEG?
Dr. Tony HerdmanMichael Smith ScholarAssistant ProfessorDepartment of Psychology, SFUNeuroimaging of ReadingSupported by:
Michael Smith Foundation forHealth ResearchOverviewBrain Networks Models of Reading and LanguageOrthographic ProcessingLetter-Speech Integration
Networks
OrthographyPhonologySemanticsMotor PlanSpeech Generation
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Classical Reading & Language ModelMotorSpeech GenerationSemanticsPhonologyOrthography
Motor
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Classical Reading & Language Model
MEGBrain Reponses ~ 100-300 femtoTesla (10-15)Earths magnetic field ~ 30-60 microTesla (10-3)
Word ReadingCARSOUPSHOEPENBALLKEY
Speech (Generation)
Sight(orthography)Word ReadingRepeatGenerate(Herdman et al., Cerebral Cortex, 2007)MEG
Sound(phonology)Speech (Generation)
Sight(orthography)Speech ProcessingRepeatGenerate(Herdman et al., Cerebral Cortex, 2007)MEG
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Classical Reading & Language ModelMotorSpeech GenerationSemanticsPhonologyOrthography
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To the uneducated, an A is just three sticks.Winnie the PoohOrthography
To the uneducated, an A is just three sticks.Winnie the PoohOrthographyModel of Reading
(Dehaene, et al., TICS, 2005)inputAPseudoletter ?Letter: A
KAZModel of Reading
Letter Perception Study
Children (12-13 years old)
P1N1
Letter
Psuedoletter7 ms(Herdman et al., submitted)EEGNeural Networks
Neural Networks
PesudoletterLetterinputAPseudoletter ?Letter: A
KAZModel of Reading
Letter-Sound Pair Learning
Letter-Sound Pair Learning
PhonologyOrthography
Letter-Sound Pair Learning
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MotorSpeech GenerationSemanticsPhonologyOrthographyReading Impaired Brain
(Herdman et al., submitted)Reading Impaired BrainMEGBrain performs complex functions in many different regionsLearning modifies brain to make it more efficientReading impairment can be caused by one or more disruptions in the reading networkFindings support a holistic approach to learning and interventionSummaryGene ExpressionCollaborativefor Kids Only
GECKOProject
Experience &BehaviourNeuralSystemCell &SynapseGene &Transcription
GECKOProjectGene ExpressionCollaborativefor Kids Only
GECKOProjectGene ExpressionCollaborativefor Kids Only
Michael Smith Foundation forHealth ResearchThank You for Your Attention
Normal Reading Children RhymingDyslexic Reading Children Rhyming Before InterventionDyslexic Reading Children Increase After Intervention(Temple et al., PNAS, 2003)Fast ForWordReading Impaired Brain