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·November 18, 2024·4 min read

Confined Spaces Change How We Smell and Experience Food

Researchers found that confined environments, like the International Space Station, alter the way people perceive food aromas, with emotions significantly coloring their responses. Using virtual reality to simulate space conditions, participants reported stronger smells for most aromas, except lemongrass, compared to a microgravity posture.

Featured Neuroscience

·October 14, 2024·4 min read

Humans Can Detect Quick Chemical Changes in Smells with Each Sniff

Human olfactory perception, traditionally viewed as slow, can actually detect rapid changes within a single sniff, as shown by new research. Using a precise sniff-triggered device, researchers presented different odors in close succession and found that participants could distinguish between them with only a 60-millisecond delay. This challenges the notion that our sense of smell is limited in speed, revealing a temporal sensitivity similar to visual perception.

Featured Neuroscience

·October 9, 2024·6 min read

How Brain Cells Identify Smells and Related Images

A recent study reveals that specific brain cells respond not only to smells but also to images and written words related to those scents, providing deeper insight into human odor perception. Researchers found that neurons in the olfactory cortex and other brain regions, like the hippocampus and amygdala, distinguish between different smells and associate them with visual cues. This research, using data from epilepsy patients, bridges a gap between animal and human studies on olfactory processing.

Featured Neuroscience

·July 18, 2024·6 min read

Infants Use Mom’s Scent to Recognize Faces

A new study reveals that infants use their mother's scent to enhance facial recognition. This ability to integrate sensory cues improves significantly between four and twelve months of age. Researchers found that younger infants rely heavily on their mother's scent, while older infants depend more on visual information alone. The findings highlight the importance of multisensory exposure for early cognitive development.

Featured Neuroscience

·June 18, 2024·6 min read

Locust Brain Reveals Unique Odor Code

Researchers deciphered the unique odor coding system in the brain of migratory locusts. Using transgenic locusts and advanced imaging, they discovered a ring-shaped representation of odors in the antennal lobe, the locust's olfactory center. This unconventional architecture and coding mechanism, consistent across all developmental stages, could provide insights into locust behavior and pest control strategies.

Featured Neuroscience

·June 11, 2024·5 min read

Early Smells Shape Newborn Brains: Olfaction Linked to Touch Development

Early exposure to odors in newborn mice is crucial for the development of their sense of touch. Researchers found that pleasant smells activate brain areas responsible for touch within the first week of life, influencing sensory processing.

Featured Neurology Neuroscience

·June 10, 2024·6 min read

Loss of Smell Linked to Heart Failure Risk

Poor olfaction in older adults may predict the development of heart failure. The study followed 2,537 participants and found that those with a reduced sense of smell had a 30% higher risk of developing congestive heart failure. This finding suggests a need to further explore the relationship between sensory deficits and heart health. Understanding this link could lead to better early interventions for at-risk populations.

Featured Genetics Neuroscience

·June 8, 2024·5 min read

Key Protein Essential for Smell and Survival Identified

The Orco protein is crucial for the survival of olfactory neurons in ants. Mutating the orco gene in Harpegnathos saltator ants drastically reduced their number of olfactory neurons, impairing their social interactions. This stud highlights the importance of Orco in neural development and social communication in ants. Understanding these mechanisms can provide insights into sensory-mediated social behavior in both animals and humans.

Featured Neuroscience Psychology

·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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Featured Neuroscience

·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).

Featured Neuroscience

·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.

Featured Neuroscience

·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.