Breaking News
April 18, 2019 - Scientists enter research collaboration to find a cure for cancer
April 18, 2019 - Study to compare benefits of tai chi and mindfulness meditation on MS symptoms
April 18, 2019 - Gestational diabetes during pregnancy may increase risk of type 1 diabetes in children
April 18, 2019 - Is a New Remedy for Body Odor on the Horizon?
April 18, 2019 - Orthostatic hypotension – Genetics Home Reference
April 18, 2019 - Healing the heartbreak of stillbirth and newborn death
April 18, 2019 - Conference to highlight advances in human immune monitoring, bioinformatics | News Center
April 18, 2019 - Bacteria use viruses for self-recognition, study reveals
April 18, 2019 - New adhesive patch could help reduce post-heart attack muscle damage
April 18, 2019 - Researchers analyze the effects of dark play in a serious video game
April 18, 2019 - Filial cannibalism and offspring abandonment may be forms of parental care
April 18, 2019 - Two proteins act in concert to maintain a healthy heart in mice, shows study
April 18, 2019 - Scientists create a functioning 3D printed heart
April 18, 2019 - Non-invasive vagus nerve stimulation improves disease symptoms in patients with rheumatoid arthritis
April 18, 2019 - Majority of men struggle to understand diagnosis and treatment of prostate cancer
April 18, 2019 - Researchers create new small molecules that may combat equine encephalitis viruses
April 18, 2019 - Animal-assisted therapy improves social behavior in patients with brain injuries
April 18, 2019 - Some viruses help protect harmful bacteria in CF patients | News Center
April 18, 2019 - Outpatient healthcare providers inappropriately prescribe antibiotics to 40% of patients
April 18, 2019 - Men who have a resting heart rate of 75 bpm are twice as likely to die early
April 18, 2019 - Novel serum biomarkers to detect NAFLD-related fibrosis
April 18, 2019 - New study delves deeper into individual genomic differences than ever before
April 18, 2019 - Gilead and Galapagos Announce Filgotinib Meets Primary Endpoint in the Phase 3 FINCH 3 Study in Methotrexate-Naïve Rheumatoid Arthritis Patients
April 18, 2019 - Emotional mirror neurons found in rats
April 18, 2019 - Sylvia Plevritis appointed chair of biomedical data science | News Center
April 18, 2019 - Yeast strain provides manufacturing boost to low-calorie sweetener derived from lactose
April 18, 2019 - C-Path and CDISC release global Therapeutic Area Standard for HIV research
April 18, 2019 - Integrating AI to analyze imaging data allows early recognition of heart disease
April 18, 2019 - Low-cost, high-speed algorithm may allow animal-free chemical toxicity testing
April 18, 2019 - HPV-negative cervical cancers are more aggressive with worse prognosis
April 18, 2019 - AI detects prostate cancer with same level of accuracy as experienced radiologists
April 18, 2019 - Study resolves sex differences in psychiatric illness risk
April 18, 2019 - Novartis Announces FDA Filing Acceptance and Priority Review of Brolucizumab (RTH258) for Patients with Wet AMD
April 18, 2019 - Cocktail of common antibiotics can fight resistant E. coli
April 18, 2019 - Persis Drell to give keynote address at medical school diploma ceremony | News Center
April 18, 2019 - EpicTogether: Remembering Our Why
April 18, 2019 - Study identifies novel loci contributing to asthma susceptibility in adults
April 18, 2019 - Gut bacteria and pregnancy
April 18, 2019 - New study finds that screening could help prevent rare types of cervical cancer
April 17, 2019 - Spatial orgnization of the genome can be altered using small molecules
April 17, 2019 - AEDs Tied to Higher Pneumonia Risk in Alzheimer Patients
April 17, 2019 - Telemedicine tied to more antibiotics for kids, study finds
April 17, 2019 - Two medical students awarded 2019 Soros Fellowships for New Americans | News Center
April 17, 2019 - Sociologist Constance A. Nathanson Awarded Guggenheim Fellowship
April 17, 2019 - Empathy and hormones could account for aggressive behavior in children, shows study
April 17, 2019 - Researchers develop oral appliance to help sufferers of sleep apnea
April 17, 2019 - Neuronal transport factor detects its target transcripts in more complex manner than previously thought
April 17, 2019 - New drug-delivery system senses high oxidant levels, responds to body chemistry and environment
April 17, 2019 - Health Tip: Horseback Trail Riding Safety
April 17, 2019 - Scientists outline the promises and pitfalls of machine learning in medicine
April 17, 2019 - $12 million grant renewal for flu vaccine research | News Center
April 17, 2019 - Lisa Kachnic, MD, Joins Columbia University as Chair of Radiation Oncology
April 17, 2019 - New study sheds light on how extreme temperature hampers spermatogenesis in insects
April 17, 2019 - Study tests high-tech, non-pharmaceutical way to address ADHD and distractibility
April 17, 2019 - New EZ-2 evaporator for clinical biochemistry sample preparation
April 17, 2019 - Fat shaming celebrities may make women more judgemental about being overweight
April 17, 2019 - Magic mouthwash effectively reduces mouth sore pain caused by radiation therapy
April 17, 2019 - CBD could help slip medications into the brain
April 17, 2019 - Scientists characterize 2017 pneumonic plague outbreak in Madagascar
April 17, 2019 - Human iPSC-derived MSCs from aged individuals acquire a rejuvenation signature
April 17, 2019 - Gun Research Is Suddenly Hot
April 17, 2019 - Employee wellness programs provide little health benefits
April 17, 2019 - Cannabis users could be more tolerant to anesthesia agents
April 17, 2019 - Study suggests new approach to treat renal fibrosis
April 17, 2019 - Green roofs may improve indoor air quality, study shows
April 17, 2019 - Selumetinib Granted U.S. Breakthrough Therapy Designation in Neurofibromatosis Type 1
April 17, 2019 - Fasting-mimicking diet holds promise for treating people with inflammatory bowel disease
April 17, 2019 - Daily cannabis use significantly higher among individuals with serious psychological distress
April 17, 2019 - Victims of bullying have greater chances of mental health problems, unemployment in later life
April 17, 2019 - Strategies to achieve greater vaccination coverage throughout Europe
April 17, 2019 - Online atlas created to identify, classify protein signatures present at AML diagnosis
April 17, 2019 - £1.8 million award to boost Crohn’s disease research
April 17, 2019 - Oxytocin blocks excess drinking in alcohol-dependent rats
April 17, 2019 - Rutgers researchers identify new factor essential for maintaining stem cells in the brain and gut
April 17, 2019 - Universal late pregnancy ultrasound improves health of mothers, babies and could be cost saving
April 17, 2019 - Cosmo Pharmaceuticals Announces Submission of Remimazolam NDA to FDA
April 17, 2019 - Stopping inflammation from becoming chronic
April 17, 2019 - Planned Parenthood’s ‘Risky Strategy’ To Update Its Image
April 17, 2019 - Common sleep myths may pose a significant public health threat
April 17, 2019 - Indicators of despair rising among Americans entering midlife
Researchers develop statistics-based computational scheme to zoom in on brain function

Researchers develop statistics-based computational scheme to zoom in on brain function

image_pdfDownload PDFimage_print

Faster computations will allow researchers to see the finer details of brain activity in functional brain imaging.

A computationally efficient data processing scheme will make it possible to see correlations in brain activity between different parts of the brain at unprecedented resolution. The statistics-based computation scheme, developed by KAUST researchers, also tackles one of the most critical problems of medical and biological imaging-how to process imaging data fast enough to realize the full exploratory power of the latest high-resolution imaging techniques.

The development of functional magnetic resonance imaging (fMRI) in the early 1990s was one of those true Eureka moments for brain research. Using existing noninvasive MRI technology, fMRI maps the distribution of blood oxygen in the brain, which is closely correlated with brain activity. With fMRI, it is possible to take snapshots of brain activity in response to specific stimuli, such as speech, responding to memory questions or visual scenes.

While fMRI is capable of taking high-resolution images consisting of hundreds of thousands of points or ‘voxels,’ it is an enormous computational task to map the correlations between simultaneous brain function across different areas of the brain. Even with the range of computing power available today such computations are not feasible by direct methods and so require a more computationally efficient approach.

Marc Genton and Hernando Ombao from KAUST, in collaboration with Stefano Castruccio from the University of Notre Dame in the United States, have addressed this problem. They developed a statistics-based computational scheme that matches activity in different parts of the brain at different spatial scales, from whole-of-brain to smaller regional structures and down to the tiniest brain volume.

“Using a statistical approach, our multiresolution approach essentially breaks up the spatial component of the fMRI data into different scales-from global to local,” says Ombao.

Developed as part of a collaboration with the stroke rehabilitation center at the University of California Irvine, the computation scheme calculates the statistical ‘shape’ of increasingly large populations of activity readings in a way that lends itself readily to distributed computing, making it highly efficient.

Not only does this solve the computational issue, it improves the interpretability of results, ensuring that the connectivity between activities can be characterized both within each brain region and across different brain regions.

“It is important to take into account how spatially separated neuronal units communicate with each other in modeling fMRI data in order to avoid misleading results, such as false activations, or an inability to detect activity.” says Ombao. “Correct identification of activated and inactivated units will help us to improve our understanding of human brain function in both healthy and diseased populations.” ?

Source:

https://discovery.kaust.edu.sa/en/article/479/zooming-in-on-brain-function

Tagged with:

About author

Related Articles