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Printable Handouts
Navigable Slide Index
- Introduction
- Environmental change and the brain
- Auditory processing
- Neurophysiological auditory assessment
- Typical sensory evoked potential testing
- Higher brain functions
- Imaging the entire brain
- But...
- Some parts are dark while others are in daylight
- The lighting pattern changes with time
- Human electrophysiological functional imaging
- The inverse problem of source estimation
- The inverse problem
- Assumptions to solve the inverse problem
- Source current density estimation
- LORETA validation
- LORETA fMRI equivalence faces
- Recording scalp electrical activity
- Dyslexia
- Dyslexia study
- Controls distinguish speech temporal cues
- Dyslexics show "locked" on the left activity
- Dyslexics distinguish speech temporal cues
- ADHD
- In the NoGo condition of a Go/NoGo task
- Current density to NoGo stimuli during N2/P3
- Significance of current density differences
- PBA
- Current density in PBA-preTx and PBA-DM/Q (1)
- Current density in PBA-preTx and PBA-DM/Q (2)
- Summary of SnPM comparisons
- Conclusions
- Summary
- Overall summary
- Thank you
Topics Covered
- Hearing is the primary modality of language and memory
- Electrophysiological functional imaging is a direct manifestation of brain activity
- Electrophysiological functional imaging has temporal resolution in the millisecond scale
- The inverse problem of intracranial sources of scalp-recorded potentials is ill-posed
- Estimate intracranial sources requires assumptions on head and nature of sources
- Source current density estimation requires the least number of assumptions
- Dyslexia
- ADHD
- Pseudobulbar Affect disorders
- Quantitative measures of spatiotemporal distributions of activity show sensitivity at the population level and clinical promise at the individual patient level
Talk Citation
Pratt, H. (2011, November 1). Neurophysiological functional imaging of the auditory system for evaluation of higher brain functions [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved November 7, 2024, from https://doi.org/10.69645/OUZC5519.Export Citation (RIS)
Publication History
Financial Disclosures
- Prof. Hillel Pratt has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
Neurophysiological functional imaging of the auditory system for evaluation of higher brain functions
Published on November 1, 2011
27 min
A selection of talks on Neuroscience
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