Something smells fishy: categorizing odors in the brain

Calcium imaging and mathematical model explain how categories and mixtures of odors are represented in the fly brain and consistent across individual flies.
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RIKEN Research Spring issue is here

Just a quick post to let you know that the Spring issue of RIKEN Research Magazine came out towards the end of March. This issue covers issues including the discovery of element 113, earth-friendly pesticides, and the secrets of a rice-killing fungal toxin. Enjoy!

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Strong emotions plus non-REM sleep equals longer-lasting perceptual memories

Perceptual memories linked to positive emotions, such as joy or happiness, are strengthened during sleep, specifically during periods of deep non-REM sleep.
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AI identifies features associated with cancer recurrence

Artificial intelligence has successfully identified features relevant to cancer prognosis that were not previously noted by pathologists
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Eating a high fat diet without getting obese?

Scientists discover that without innate immune cells in the intestines, eating a high fat diet does not lead to obesity in mice.
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Proton and antiproton still seem identical

Using a novel two-particle measurement method, scientists have measured the magnetic moment of the antiproton at a precision 350 times higher than any previous measurement.

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Japanese people are a mixture of three separate ancestral groups

A new study shows that the current Japanese population is derived from 3 ancestral groups, one of which brought Denisovan DNA to the party.
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Bye-bye microplastics: new plastic is fully ocean-degradable

A new bioplastic that dissolves in saltwater — no more pesky microplastics!
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Tape and vermilion: ingredients for mapping artifact origins

Vermilion samples taken from ancient artifacts with sulfur-free tape can tell us about trade patterns 3000 years ago.
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Predictive grid cells help self navigation in the brain

Scientists have discovered grid cells in the brain that map an animal’s (or human’s) future position in space.
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Social contact-seeking behavior and loneliness in the brain

Levels of the peptide amylin in the brain are related to loneliness; activating amylin neurons in the MPOA drives isolated mice to seek social contact.
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Trigger region found for epileptic absence seizures

A mouse model shows that absence seizures are triggered by faulty connections between the cortex and fast-spiking neurons in the striatum.

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Artificial gravity protects the immune system of mice in space

Mice who experienced artificial gravity on the ISS suffered less damage to their immune system (thymus) than weightless mice did.
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Eating a high fat diet without getting obese?

Scientists discover that without innate immune cells in the intestines, eating a high fat diet does not lead to obesity in mice.
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New treatment assembles cancer drug inside the body

Cancer drugs assembled inside the body on cancer cells should reduce harmful side effects to other tissue.
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Why (mouse) mothers take risks to protect their infants

The calcitonin receptor and its ligand amylin act in the brain to motivate mouse mothers to protect their pups, even in risky/dangerous situations.
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