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On-Line Analysis of Neural Activation Using Functional Near-Infrared Spectroscopy: Exploring Neural Activation Patterns During Cognitive, Linguistic and Communication Tasks |
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Ron Gillam - Utah State University
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| SRCLD Year: |
2014 |
| Presentation Type: |
Invited Speaker |
| Presentation Time: |
(na) |
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This presentation will explore the usefulness of functional Near Infrared Spectroscopy (NIRS) as an instrument that could yield data that contributes to our understanding of SLI. NIRS is a non-invasive neuroimaging technology that detects cortical increases and decreases in the concentration of oxygenated and deoxygenated hemoglobin at multiple measurement sites. NIRS has some advantages over some other neuroimaging techniques for assessing cognitive, linguistic, and communicative processing. For example, NIRS has better temporal resolution than fMRI and better spatial resolution than EEG, it can be used in natural experimental settings and NIRS measures are minimally susceptible to speech related motion. Children can sit in chairs at a desk and talk to examiners or other participants while being imaged. Pilot studies will be presented that compare the neural activation patterns of children with SLI and typically-developing controls as they perform a working memory task (n-back) and a complex sentence comprehension task. Data will also be presented from a study employing a technique called hyperscanning that enables us to image the brains of pairs of individuals simultaneously as they engage in cooperative or competitive communication tasks. Data from these studies suggest that NIRS has the potential to inform our understanding of the extent and variability of neural activation related to language and communication impairments in children with SLI. |
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