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Olfactory Bulb

All articles tagged with #olfactory bulb

science14 days ago•39 min saved

Brain's sniff clock clocks in on a single breath

Scientists show the human olfactory bulb generates a theta rhythm synchronized to a single sniff, with gamma bursts timing odor responses. In six volunteers, deliberate sniffs reset the rhythm to a consistent phase and larger breaths amplified the theta waves, while passive breathing did not evoke the rhythm. Published in Science Advances, the study suggests a shared, sniff-driven timing mechanism in the smell system with potential implications for early detection of brain diseases such as Alzheimer’s, Parkinson’s, and autism.

via Earth.com|

#gamma-bursts #neuroscience #olfactory-bulb

health3 years ago•3 min saved

"Smell Loss: A Potential Early Indicator of Brain Diseases"

Loss of smell, known as hyposmia, has emerged as an early indicator of neurodegenerative disorders such as Parkinson's disease and Alzheimer's disease. Researchers are exploring the use of smell tests as a diagnostic tool for these diseases, as well as Huntington's disease, multiple sclerosis, and mild cognitive impairment. The sense of smell is closely connected to brain health, as the olfactory bulb at the base of the brain is the first sensory structure that comes into contact with sensory stimuli and environmental pathogens. Smell dysfunction is also associated with certain psychiatric diseases. Additionally, smell is a marker of overall health and mortality risk.

via Nautilus Magazine|

#brain-diseases #diagnostic-tool #health

health3 years ago•6 min saved

Reviving Brain Rhythm to Fight Depression

Scientists have discovered that restoring certain gamma signals in the olfactory bulb, a brain region responsible for processing smells, can help alleviate depression. This breakthrough discovery suggests potential new methods for treating depression, particularly in instances where conventional medications are ineffective. The study proposes a role for gamma oscillations in future treatment and highlights the potential of gamma-enhancement as a new approach to treat depression when conventional drugs fail.

via SciTechDaily|

#brain-rhythm #depression #gamma-signals

neuroscience3 years ago•6 min saved

Restoring Brain Rhythm May Combat Depression.

Restoring gamma signals in the olfactory bulb can counter depression, according to a study by researchers from NYU Grossman School of Medicine and University of Szeged in Hungary. Gamma oscillation changes have been found to be an electrophysiological marker of depression in brain regions that manage the sense of smell, which have also been linked to emotions. The researchers used a device to restore gamma signals of the brain at their natural pace, which was able to reduce depressive behaviors by 40%. However, further studies are needed to understand the link between firing patterns of gamma waves and emotions.

via Neuroscience News|

#anxiety #brain #depression