A colourful photo of an octopus.
Book Excerpt from When Animals Dream
In Chapter 1, “The Science of Animal Dreams,” author David M. Peña-Guzmán relays the history of researchers digging into the mental realities of nonhuman brains.
Book Excerpt from When Animals Dream
Book Excerpt from When Animals Dream

In Chapter 1, “The Science of Animal Dreams,” author David M. Peña-Guzmán relays the history of researchers digging into the mental realities of nonhuman brains.

In Chapter 1, “The Science of Animal Dreams,” author David M. Peña-Guzmán relays the history of researchers digging into the mental realities of nonhuman brains.

sleep
Cover of When Animals Dream: A colourful illustration of an octopus.<br><br>
Opinion: Animal Dreaming Should Give Us Ethical Pause
David M. Peña-Guzmán | Aug 15, 2022
Research shows that humans aren’t the only animals whose imaginations run wild while they sleep.
Artistic representation of a brain depicted as a clock on a background with one half in dark blue with yellow stars and one half in light blue with clouds.
Which Neurons Go to Sleep First in Humans? fMRI Can Tell
Alejandra Manjarrez | Aug 9, 2022
By linking blood flow patterns to bioelectric signals in the brains of sleeping volunteers, scientists are studying the order in which brain regions fall asleep and wake up.
Artist&rsquo;s rendition of metastatic cancer cells with yellow nuclei and green cell bodies extending into blue tendrils.
While the Body Rests, Breast Cancer Spreads More Aggressively
Alejandra Manjarrez | Jun 23, 2022
More cancer cells are shed from primary tumors when individuals are asleep than when they’re awake, according to observations in mouse models and a small cohort of breast cancer patients.
Black and white photo of Rechtschaffen looking at the camera
Pioneering Sleep Researcher Allan Rechtschaffen Dies at 93
Lisa Winter | Dec 22, 2021
Rechtschaffen sought to understand the evolutionary purpose of shut-eye.
illustration of a broken DNA strand
DNA Damage Makes Zebrafish Sleepy
Sophie Fessl | Nov 18, 2021
Buildup of a DNA-repair protein in brain cells spurs shut-eye in the fish, a study finds, and similar results in mice suggest the mechanism is widespread in animals.
Power of thinking, abstract imagination, world, universe inside your mind, watercolor painting
The Link Between Wandering and Sleeping Minds
Annie Melchor | Oct 1, 2021
Researchers discover that when the mind wanders or goes blank, some parts of the brain behave as they do during sleep.
J Allan Hobson smiling at camera, circa 2005
Groundbreaking Sleep Researcher J. Allan Hobson Dies at 88
Lisa Winter | Jul 29, 2021
He famously contradicted Sigmund Freud’s views on the meaning of dreams.
sleep, lucid dreaming, dreaming, dreams, REM, communication, Morse code
Researchers Exchange Messages with Dreamers
Asher Jones | Feb 18, 2021
Dreamers answered experimenters’ questions or solved simple math problems, showing that complex two-way communication between the dreaming and waking world is possible.
What’s in a Dream
The Scientist Staff | Dec 1, 2020
See Reading Frames coauthor Robert Stickgold discuss the relationship between sleeping, dreaming, and memory.
Book Excerpt from When Brains Dream
Robert Stickgold and Antonio Zadra | Dec 1, 2020
Ferreting out the biological function of dreaming is a frontier in neuroscience.
Infographic: The Technology Scientists Use to Engineer Dreams
Catherine Offord | Dec 1, 2020
Researchers are experimenting with a variety of tools, from brain stimulation to audiovisual equipment, to try to take control of the sleeping brain.
Contributors
The Scientist Staff | Dec 1, 2020
Meet some of the people featured in the December 2020 issue of The Scientist.
Opinion: The Biological Function of Dreams
Robert Stickgold and Antonio Zadra | Dec 1, 2020
The scenarios that run through our sleeping brains may help us explore possible solutions to concerns from our waking lives.
Scientists Engineer Dreams to Understand the Sleeping Brain
Catherine Offord | Dec 1, 2020
Technologies such as noninvasive brain stimulation and virtual reality gaming offer insights into how dreams arise and what functions they might serve.
Astrocytes, Not Just Neurons, Play a Role in Sleep
Abby Olena | Sep 24, 2020
In mice, the brain’s main glial cell type exhibits distinctive patterns of activity across the sleep-wake cycle and influences the response to sleep deprivation.
Poor Sleep Linked with Future Amyloid-β Build Up
Abby Olena | Sep 11, 2020
Accumulation of the protein was more likely to be found in the brains of people who slept less well years earlier, according to a new study.
william dement stanford sleep disorders medicine
Leader of Sleep Science William Dement Dies
Kerry Grens | Jun 24, 2020
The Stanford University researcher charted the human sleep cycle and characterized numerous sleep disorders.
Adult-Born Neurons Strengthen Memories While Mice Sleep
Ruth Williams | Jun 4, 2020
The activation of young brain cells in adult mice is necessary not just for forming memories, but consolidating them during rapid eye movement sleep, a study shows.
Variants in Water Channel Gene Tied to More Restful Sleep
Abby Olena | May 12, 2020
The gene, aquaporin-4, is critical in rodents for the cerebrospinal fluid bath the brain gets during sleep. It’s now also tied to slow wave electrical activity during deep sleep in people.