EEG Analysis of Brain Dynamics in Children with Language Disorders
Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 33114
EEG Analysis of Brain Dynamics in Children with Language Disorders

Authors: Hamed Alizadeh Dashagholi, Hossein Yousefi-Banaem, Mina Naeimi

Abstract:

Current study established for EEG signal analysis in patients with language disorder. Language disorder can be defined as meaningful delay in the use or understanding of spoken or written language. The disorder can include the content or meaning of language, its form, or its use. Here we applied Z-score, power spectrum, and coherence methods to discriminate the language disorder data from healthy ones. Power spectrum of each channel in alpha, beta, gamma, delta, and theta frequency bands was measured. In addition, intra hemispheric Z-score obtained by scoring algorithm. Obtained results showed high Z-score and power spectrum in posterior regions. Therefore, we can conclude that peoples with language disorder have high brain activity in frontal region of brain in comparison with healthy peoples. Results showed that high coherence correlates with irregularities in the ERP and is often found during complex task, whereas low coherence is often found in pathological conditions. The results of the Z-score analysis of the brain dynamics showed higher Z-score peak frequency in delta, theta and beta sub bands of Language Disorder patients. In this analysis there were activity signs in both hemispheres and the left-dominant hemisphere was more active than the right.

Keywords: EEG, electroencephalography, coherence methods, language disorder, power spectrum, z-score.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1109379

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2550

References:


[1] H., van Agt. "Language disorders in children: impact and the effect of screening: Erasmus MC University Medical Center." Rotter, 2011.
[2] Catts HW, Bridges MS, Little TD, Tomblin JB. "Reading achievement growth in children with language impairments." Journal of Speech, Language, and Hearing Research, 2008;51(6):1569-79.
[3] Singer W, Gray CM. "Visual feature integration and the temporal correlation hypothesis." Annual review of neuroscience, 1995;18(1):555- 86.
[4] Abeles M, Bergman H, Margalit E, Vaadia E. "Spatiotemporal firing patterns in the frontal cortex of behaving monkeys." Journal of neurophysiology, 1993;70:1629.
[5] Roelfsema PR, Engel AK, Konig P, Singer W. "Visuomotor integration is associated with zero time-lag synchronization among cortical areas." Nature, 1997;385:157-61.
[6] Bressler SL, Kelso J. "Cortical coordination dynamics and cognition." Trends in cognitive sciences, 2001;5(1):26-36.
[7] Ahmadlou M, Gharib M, Hemmati S, Vameghi R, Sajedi F. "Disrupted small-world brain network in children with Down Syndrome." Clinical Neurophysiology, 2013;124(9):1755-64.
[8] Petsche H, Etlinger SC. "EEG Aspects of Cognitive Processes: A Contribution to the Proteus-like Nature of Consciousness." International Journal of Psychology, 1998;33(3):199-212.
[9] Hemmati S, Ahmadlou M, Gharib M, Vameghi R, Sajedi F. "Down Syndrome's brain dynamics:analysis of fractality in resting state." Cognitive neurodynamics, 2013;7(4):333-40.
[10] Weiss S, Mueller HM. "The contribution of EEG coherence to the investigation of language." Brain and Language, 2003;85(2):325-43.
[11] Nazari MA, Mosanezhad E, Hashemi T, Jahan A. "The effectiveness of neurofeedback training on EEG coherence and neuropsychological functions in children with reading disability." Clinical EEG and neuroscience, 2012;43(4):315-22.
[12] Coben R, Clarke AR, Hudspeth W, Barry RJ. "EEG power and coherence in autistic spectrum disorder." Clinical neurophysiology, 2008;119(5):1002-9.
[13] Matousek M, Petersen I. "Frequency analysis of the EEG in normal children and adolescents." Automation of clinical electroencephalography, 1973: 75-102.
[14] Thatcher R, North D, Biver C. "EEG and intelligence: relations between EEG coherence, EEG phase delay and power." Clinical Neurophysiology, 2005: 116(9):2129-41.
[15] Collura TF, Guan J, Tarrant J, Bailey J, Starr F. "EEG biofeedback case studies using live Z-score training and a normative database." Journal of Neurotherapy, 2010: 14(1):22-46.