neuroimaging tagged posts

Brain imaging method reveals hidden vascular changes with aging

USC researchers develop new brain imaging method to reveal hidden vascular changes with aging
Guo et al. present a novel MRI technique at 7 Tesla that enables the first layer-resolved mapping of cerebral microvascular volumetric pulsatility across cortical and white matter regions. Credit: Stevens INI

Researchers at the Mark and Mary Stevens Neuroimaging and Informatics Institute (Stevens INI) at the Keck School of Medicine of USC have developed a brain imaging technique that reveals how tiny blood vessels in the brain pulse with each heartbeat—changes that may hold clues to aging and diseases such as Alzheimer’s.

The study, published in Nature Cardiovascular Research, introduces the first noninvasive method for measuring “microvascular volumetric pulsatility”—the rhythmic expansion and contraction of the brain’s smallest vessels—in living humans.

Using ultra-high-f...

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Meditation, Art and Nature: Neuroimaging reveals distinct patterns of brain activation

Past research suggests that meditation and exposure to art or nature can positively impact people’s well-being and brain health, in some cases even reducing stress and supporting the processing of emotions. Yet most past studies focused on each of these experiences individually, rather than comparing their effects on brain activity.

Researchers at University of California Los Angeles set out to examine the brain activation patterns associated with a visualization-based transcendental meditation of connecting to the cosmic soul and compare them to those from people watching evocative digital art or nature videos.

Their findings, published in Frontiers in Human Neuroscience, suggest that these different types of transcending experiences prompt different brain activation patterns.

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