Brain connectivity study of joint attention using frequency-domain optical imaging technique

Ujwal Chaudhary; Banghe Zhu; Anuradha Godavarty

doi:10.1117/12.841504

2 March 2010 Brain connectivity study of joint attention using frequency-domain optical imaging technique

Ujwal Chaudhary, Banghe Zhu, Anuradha Godavarty

Proceedings Volume 7548, Photonic Therapeutics and Diagnostics VI; 754844 (2010) https://doi.org/10.1117/12.841504
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

Autism is a socio-communication brain development disorder. It is marked by degeneration in the ability to respond to joint attention skill task, from as early as 12 to 18 months of age. This trait is used to distinguish autistic from nonautistic populations. In this study, diffuse optical imaging is being used to study brain connectivity for the first time in response to joint attention experience in normal adults. The prefrontal region of the brain was non-invasively imaged using a frequency-domain based optical imager. The imaging studies were performed on 11 normal right-handed adults and optical measurements were acquired in response to joint-attention based video clips. While the intensity-based optical data provides information about the hemodynamic response of the underlying neural process, the time-dependent phase-based optical data has the potential to explicate the directional information on the activation of the brain. Thus brain connectivity studies are performed by computing covariance/correlations between spatial units using this frequency-domain based optical measurements. The preliminary results indicate that the extent of synchrony and directional variation in the pattern of activation varies in the left and right frontal cortex. The results have significant implication for research in neural pathways associated with autism that can be mapped using diffuse optical imaging tools in the future.

Citation Download Citation

Ujwal Chaudhary, Banghe Zhu, and Anuradha Godavarty "Brain connectivity study of joint attention using frequency-domain optical imaging technique", Proc. SPIE 7548, Photonic Therapeutics and Diagnostics VI, 754844 (2 March 2010); https://doi.org/10.1117/12.841504

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KEYWORDS

Brain

Phase shifts

Neuroimaging

Diffuse optical imaging

Optical imaging

Optical testing

Functional magnetic resonance imaging

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