False color image of two Caenorhabditis elegans roundworms; blue on a black background
Mitochondrial Stress Is Passed Between Generations
Researchers identified a novel mechanism by which chemically induced stress is “remembered” by the mitochondria of worms more than 50 generations after the original trigger.
ABOVE: iStock.com HeitiPaves
Mitochondrial Stress Is Passed Between Generations
Mitochondrial Stress Is Passed Between Generations

Researchers identified a novel mechanism by which chemically induced stress is “remembered” by the mitochondria of worms more than 50 generations after the original trigger.

Researchers identified a novel mechanism by which chemically induced stress is “remembered” by the mitochondria of worms more than 50 generations after the original trigger.

ABOVE: iStock.com HeitiPaves
neurons
MUSCLE CONTROL: Researchers pinpoint how C. elegans (pictured) manages to expel food from its mouth.
The Science Behind How Roundworms Spit
Diana Kwon | Dec 1, 2021
By viewing countless hours of expectorating worms, researchers discover a unique way in which neurons control the movement of muscles.
The head of a tadpole is pictured. Its eye is black, but the rest of its head is various shades of green
Scientists Use Photosynthesis to Power an Animal’s Brain
Abby Olena | Oct 13, 2021
Injecting oxygen-generating algae into tadpoles allows brain activity to continue in the absence of oxygen, researchers find.
Image of nerve fibers shown in green and red
Neurons Simplify Visual Signals by Responding to Only One Retina
Anne N. Connor | Oct 1, 2021
Mice have neurons that connect to both eyes but only propagate the signal from one or the other, simplifying the information sent to the cerebral cortex.
Conceptual image of numbers
Is Your Brain Wired for Numbers?
Catherine Offord | Oct 1, 2021
Our perception of quantity, separate from counting or estimation of magnitude more generally, is foundational to human cognition, according to some neuroscientists.
Illustration of a brain on a clock with a figure of a man moving the clock arms
Human “Time Cells” Encode, Process Flow of Time
Anne N. Connor | Oct 1, 2021
Neurons in the hippocampus store information on the timing of experiences in addition to their content, helping to mediate sequential memory recall, a new study shows.
Photograph of a brown laboratory mouse
Experiment Gone Awry Suggests Novel Way to Combat Hypoxia
Phil Jaekl | Oct 1, 2021
While exploring suspended animation in mice, scientists discover how an enzyme can protect the brain from dangerously low levels of oxygen.
Illustration of a Macaque viewing patterns of dots on a screen
Infographic: Single-Cell Recordings Identify “Number Neurons”
Catherine Offord | Oct 1, 2021
Some nerve cells in the brains of macaques respond selectively to particular numbers, hinting at a specialized pathway for extracting information about numerical quantity.
Photograph of a waterfall
Falling Water, Rising Rocks, 1834
Catherine Offord | Oct 1, 2021
Intrigued by an optical illusion he experienced while traveling in Scotland, Robert Addams wrote what is now considered one of the definitive observational accounts of so-called motion aftereffects.
morphine drip
Morphine Tolerance Pathway Identified in Mice
David Adam | Sep 20, 2021
Prolonged exposure to morphine triggers cells in the spine to release signaling molecules that increase pain sensitivity and dull the relief of the drug. Blocking this activity could improve pain management.
illustration of a blue neuron lit with red
Neuron-Released Protein Can Set Off Inflammation: Study
Marcus A. Banks | Aug 19, 2021
Research in mice suggests that moderating nerve activity with drugs or electrical pulses could modify tissue immune responses, curtailing the chronic pain often associated with inflammatory conditions.
Hippocampal neurons are labeled in blue and purple on a black background
New Role for Leptin: Promoting Synapse Formation in Rat Neurons
Abby Olena | May 20, 2021
The hormone, which is well known for regulating appetite, appears to influence neuronal development—a finding that could shed light on disorders such as autism that involve dysfunctional synapse formation.
Clues to the Origin and Function of the Brain’s Alpha Waves
Amanda Heidt | Oct 1, 2020
Patterns of neural activity known as alpha waves, long thought to originate in the thalamus, may actually stem from a different brain region entirely.
Immune Cell and Its Cytokine Control Exploratory Behavior in Mice
Ashley Yeager | Sep 14, 2020
Gamma delta T cells in the meninges of the brain release a cell signaling molecule that does more than protect mice from microbial pathogens.