PMID- 30190674 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240330 IS - 1662-5188 (Print) IS - 1662-5188 (Electronic) IS - 1662-5188 (Linking) VI - 12 DP - 2018 TI - A Comprehensive Review of Magnetoencephalography (MEG) Studies for Brain Functionality in Healthy Aging and Alzheimer's Disease (AD). PG - 60 LID - 10.3389/fncom.2018.00060 [doi] LID - 60 AB - Neural oscillations were established with their association with neurophysiological activities and the altered rhythmic patterns are believed to be linked directly to the progression of cognitive decline. Magnetoencephalography (MEG) is a non-invasive technique to record such neuronal activity due to excellent temporal and fair amount of spatial resolution. Single channel, connectivity as well as brain network analysis using MEG data in resting state and task-based experiments were analyzed from existing literature. Single channel analysis studies reported a less complex, more regular and predictable oscillations in Alzheimer's disease (AD) primarily in the left parietal, temporal and occipital regions. Investigations on both functional connectivity (FC) and effective (EC) connectivity analysis demonstrated a loss of connectivity in AD compared to healthy control (HC) subjects found in higher frequency bands. It has been reported from multiplex network of MEG study in AD in the affected regions of hippocampus, posterior default mode network (DMN) and occipital areas, however, conclusions cannot be drawn due to limited availability of clinical literature. Potential utilization of high spatial resolution in MEG likely to provide information related to in-depth brain functioning and underlying factors responsible for changes in neuronal waves in AD. This review is a comprehensive report to investigate diagnostic biomarkers for AD may be identified by from MEG data. It is also important to note that MEG data can also be utilized for the same pursuit in combination with other imaging modalities. FAU - Mandal, Pravat K AU - Mandal PK AD - Neuroimaging and Neurospectroscopy Lab, National Brain Research Centre, Gurgaon, India. AD - Department of Neurodegeneration, Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia. FAU - Banerjee, Anwesha AU - Banerjee A AD - Neuroimaging and Neurospectroscopy Lab, National Brain Research Centre, Gurgaon, India. FAU - Tripathi, Manjari AU - Tripathi M AD - Department of Neurology, All Indian Institute of Medical Sciences, New Delhi, India. FAU - Sharma, Ankita AU - Sharma A AD - Neuroimaging and Neurospectroscopy Lab, National Brain Research Centre, Gurgaon, India. LA - eng PT - Journal Article PT - Review DEP - 20180823 PL - Switzerland TA - Front Comput Neurosci JT - Frontiers in computational neuroscience JID - 101477956 PMC - PMC6115612 OTO - NOTNLM OT - Alzheimer's disease OT - effective connectivity OT - functional connectivity OT - machine learning OT - magnetoencephalography OT - mild cognitive impairment OT - multimodal imaging OT - network analysis EDAT- 2018/09/08 06:00 MHDA- 2018/09/08 06:01 PMCR- 2018/01/01 CRDT- 2018/09/08 06:00 PHST- 2018/03/17 00:00 [received] PHST- 2018/07/09 00:00 [accepted] PHST- 2018/09/08 06:00 [entrez] PHST- 2018/09/08 06:00 [pubmed] PHST- 2018/09/08 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - 10.3389/fncom.2018.00060 [doi] PST - epublish SO - Front Comput Neurosci. 2018 Aug 23;12:60. doi: 10.3389/fncom.2018.00060. eCollection 2018.