Bee colonies make decisions the same way the human brain does

The results have implications for psychology, neurology, robotics and A.I.

A bee keeper with a hive.
A bee keeper. Credit: Getty Images.

How honey bees as a group decide on things, such as where to build their nest, mimics the operation of the human brain, with each bee in the “superorganism” acting like a neuron in the gray or white matter, researchers at the University of Sheffield, in the UK, have announced. Their findings were published in the journal Scientific Reports. This has implications not only for neurology and entomology, but robotics and A.I. as well.


Psychophysics is the study of how the human brain processes a stimulus through the senses and how it makes decisions based on input. This field has been around for about a couple of centuries. Modern neuroscience has until recently eclipsed it. While the field of psychophysics has been used to better understand how the human brain operates, a few remarkable studies have applied it to other animals, to see if they’re guided by the same or similar processes.

Several species from single celled amoeba and slime molds, to more complex organisms, such as fish, birds, and mammals, display behavior associated with psychophysical laws. But until this study, these laws have only been applied to singular organisms, not superorganisms. Andreagiovanni Reina is a collective robotics researcher in Sheffield’s computer science department. He was the lead author on this study.

Reina told Newsweek,

Psychophysics studies the relationship between the intensity of a stimulus and its perception in the human brain. This relationship has been explained through a set of psychophysical laws that hold in a wide spectrum of sensory domains, such as sound loudness, musical pitch, image brightness, time duration, weight. Recently, numerous studies have shown that a wide range of organisms at various levels of complexity also obey these laws.

A “superorganism,” colonies of bees are so in sync they actually make decisions much like a human brain does. Credit: PollyDot, Pixababy.

It’s important to note that psychophysical laws apply, not to individual neurons but the brain as a whole. When making decisions, honey bee colonies and the human brain adhere to three different laws. These are Piéron's Law, the Hick-Hyman Law, and Weber's Law. Piéron's law states that humans make decisions more quickly when they have high quality information than when they have low-quality information. In other words, it’s easier to pick between two choices of high quality than of low quality.

The Hick-Hyman law states that the more options one has, the more difficult it is to make a selection. And Weber’s law says that the less distinction between the quality of two options, the more difficult it is to make a decision. In the human brain, such decision-making comes down to a group of neurons firing in a distinct pattern. Whereas with a bee colony, scouts return to the hive to communicate what they’ve found, through a series of wiggly gyrations and dances.

Individual bees don’t operate under the laws of psychophysics, but whole colonies do. Credit: Getty Images.

Researchers applied the psychophysical laws to colonies of European honey bees (Apis mellifera) who were going out and gathering information, in order to decide where they should build their nest. Researchers observed them carefully, then took that data and applied the laws to it. The bees sometimes had to pick between high quality and low quality nesting sites, for instance. At other times, they had to select between two high quality sites.

Reina and colleagues concluded that while no individual bee operated in terms of psychophysic's laws, the colony as a whole did. "This study is exciting because it suggests that honey bee colonies adhere to the same laws as the brain when making collective decisions," Reina told Medical News Today.

He added, "With this view in mind, parallels between bees in a colony and neurons in a brain can be traced, helping us to understand and identify the general mechanisms underlying psychophysic's laws.” These findings could help us understand the brain better and may even give us a glimpse at the biological underpinnings of psychological phenomena.

For more on the science behind honey bees, click here.

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This article was originally published on our sister site, Freethink.

China wants to build a mini-star on Earth and house it in a reactor. Many teams across the globe have this same bold goal --- which would create unlimited clean energy via nuclear fusion.

But according to Chinese state media, New Atlas reports, the team at the Experimental Advanced Superconducting Tokamak (EAST) has set a new world record: temperatures of 120 million degrees Celsius for 101 seconds.

Yeah, that's hot. So what? Nuclear fusion reactions require an insane amount of heat and pressure --- a temperature environment similar to the sun, which is approximately 150 million degrees C.

If scientists can essentially build a sun on Earth, they can create endless energy by mimicking how the sun does it.

If scientists can essentially build a sun on Earth, they can create endless energy by mimicking how the sun does it. In nuclear fusion, the extreme heat and pressure create a plasma. Then, within that plasma, two or more hydrogen nuclei crash together, merge into a heavier atom, and release a ton of energy in the process.

Nuclear fusion milestones: The team at EAST built a giant metal torus (similar in shape to a giant donut) with a series of magnetic coils. The coils hold hot plasma where the reactions occur. They've reached many milestones along the way.

According to New Atlas, in 2016, the scientists at EAST could heat hydrogen plasma to roughly 50 million degrees C for 102 seconds. Two years later, they reached 100 million degrees for 10 seconds.

The temperatures are impressive, but the short reaction times, and lack of pressure are another obstacle. Fusion is simple for the sun, because stars are massive and gravity provides even pressure all over the surface. The pressure squeezes hydrogen gas in the sun's core so immensely that several nuclei combine to form one atom, releasing energy.

But on Earth, we have to supply all of the pressure to keep the reaction going, and it has to be perfectly even. It's hard to do this for any length of time, and it uses a ton of energy. So the reactions usually fizzle out in minutes or seconds.

Still, the latest record of 120 million degrees and 101 seconds is one more step toward sustaining longer and hotter reactions.

Why does this matter? No one denies that humankind needs a clean, unlimited source of energy.

We all recognize that oil and gas are limited resources. But even wind and solar power --- renewable energies --- are fundamentally limited. They are dependent upon a breezy day or a cloudless sky, which we can't always count on.

Nuclear fusion is clean, safe, and environmentally sustainable --- its fuel is a nearly limitless resource since it is simply hydrogen (which can be easily made from water).

With each new milestone, we are creeping closer and closer to a breakthrough for unlimited, clean energy.

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