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          olfaction

          This shows flowers in a field.
          FeaturedNeurosciencePsychology
          ·May 18, 2024·6 min read

          Are Scents of Nature an Untapped Well-Being Boost?

          A new study urges researchers to explore how the smells of nature impact human health and well-being. While the visual aspects of nature have been extensively studied, the olfactory dimension remains under-explored.
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          This shows a brain and a measuring tape.
          FeaturedNeuroscience
          ·May 16, 2024·5 min read

          High BMI Linked to Weak Smell-Eating Circuit in Brain

          A new study reveals a novel brain circuit linking the sense of smell and eating behavior. The weaker the connection between these regions, the higher a person's Body Mass Index (BMI).
          Read More
          This shows a woman smelling perfume.
          FeaturedNeuroscience
          ·May 13, 2024·5 min read

          Naming Scents: How Labels Shape Our Perception of Odors

          New research reveals that the names we assign to odors can significantly influence how we perceive them. In a study utilizing ultrahigh-field functional MRI technology, participants rated identical odors as more dissimilar when they were given different names, underscoring the impact of language on sensory experience. The study tracked how odor information is processed in the brain's primary olfactory cortex, specifically the piriform cortex, and showed different brain activities based on the labels used.
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          This shows a woman surrounded by food.
          FeaturedNeuroscience
          ·April 25, 2024·4 min read

          Sight and Smell of Food Kickstarts Liver Activity

          Merely seeing and smelling food can activate adaptations in liver mitochondria in mice within minutes. This response is driven by the activation of POMC neurons in the brain, signaling the liver to prepare for nutrient processing by modifying mitochondrial protein through phosphorylation.
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          This shows hippocampal cells.
          FeaturedNeuroscience
          ·April 25, 2024·7 min read

          Hybrid Brains: Mice with Rat Neurons Sense Smells

          Researchers made a groundbreaking advancement by developing mice with hybrid brains containing rat neurons, allowing them to perceive odors like rats. This innovation underscores the brain's remarkable flexibility to integrate and utilize cells from different species, potentially revolutionizing approaches to human-machine interfaces and cell transplantation therapies.
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          This shows an older man.
          FeaturedNeurologyNeuroscience
          ·April 11, 2024·6 min read

          Nose vs. Gut: Unraveling Parkinson’s Toxic Origins

          A pivotal hypothesis paper challenges existing theories on Parkinson's disease origins, proposing environmental toxicants as key culprits. This study suggests that Parkinson's can start from the brain's smell center or the gut, influenced by inhaled or ingested toxins.
          Read More
          This shows a nose.
          FeaturedNeuroscience
          ·April 5, 2024·5 min read

          Sense of Smell Relies on Predictive Coding More Than Vision

          Our sense of smell operates on predictive coding more so than vision, challenging previous notions of smell as a primitive sense. Through a series of experiments, including behavioral studies and fMRI brain imaging, the study highlights smell's sophistication in reacting to unexpected stimuli by engaging not just the olfactory but also the visual brain regions.
          Read More
          This shows a dog and a soldier.
          FeaturedNeurosciencePsychology
          ·March 28, 2024·4 min read

          Dogs Sniffing Out PTSD

          Dogs can be trained to detect stress-related volatile organic compounds (VOCs) in human breath, potentially identifying the onset of PTSD flashbacks. This groundbreaking study utilized two dogs to distinguish between the breath of individuals recalling traumatic experiences and control samples, achieving over 70% accuracy.
          Read More
          This shows a woman surrounded by smoke.
          FeaturedNeurologyNeuroscience
          ·March 12, 2024·8 min read

          Smell Loss Heightens Safety Risks

          A new study highlights the significant safety concerns and hazards faced by individuals with olfactory dysfunction, including a higher incidence of gas safety scares. The survey of 432 participants, conducted from February to September 2022, found that a large majority are concerned about their safety, particularly regarding gas leaks, smoke detection, and spoiled food, with over a third experiencing related hazardous events in the past five years.
          Read More
          This shows a woman sniffing lavender.
          FeaturedNeurosciencePsychology
          ·February 13, 2024·3 min read

          Scents Enhance Memory Recall in Depression

          Familiar scents can significantly aid individuals with depression in recalling specific autobiographical memories, potentially offering a new avenue for therapeutic intervention. By directly engaging the amygdala through olfactory cues, the research demonstrated that scents are more effective than verbal prompts in evoking vivid and specific memories.
          Read More
          This shows a brain
          FeaturedNeuroscience
          ·February 6, 2024·4 min read

          How Odors Influence Brain’s Decision Making Mechanism

          Researchers have uncovered a novel function of the hippocampus in decision making, showing that specific brain cells, known as 'time cells,' are stimulated by odors to facilitate rapid 'go, no-go' decisions.
          Read More
          This shows a fruit fly.
          FeaturedGeneticsNeuroscience
          ·February 5, 2024·4 min read

          Fruit Flies’ Sensory Evolution: A Whiff of Genetic Secrets

          Researchers mapped the sensory evolution of fruit flies, revealing how genetic variations enable them to adapt their sense of smell and taste to diverse environments. The team discovered that while most genes remain stable across generations, a significant number have evolved, leading to unique olfactory experiences among different fly species.
          Read More
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          This shows the outline of a woman and a brain.

          PCOS/PMOS Increases Alzheimer’s Risk

          This shows a person holding a glass of scotch and microglia.

          Alcohol Tricks Brain Cells Into Destroying Themselves

          This shows an older man taking a nap.

          Daytime Napping Linked to Higher Risk of Dementia

          This shows a brain.

          Prenatal Stress Alters the Placenta to Shape Fetal Brain Development

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