Archive for the ‘biological’ category: Page 7

Mar 15, 2023

OpenAI Releases ChatGPT-4 And Performs Impressive Demonstration

Posted by in categories: biological, mathematics, robotics/AI

OpenAI has released a new version of ChatGPT, claiming that the new language learning model is capable of passing – and even excelling in – a variety of academic exams.

ChatGPT-4, which will be available on Bing as well as the OpenAI website, is more reliable and more creative than its predecessor, according to OpenAI. The team tested the model on a number of exams designed for humans, from the bar exam to biology, using publicly available papers. While no additional training was given to the model ahead of the tests, it was able to perform well on most subjects, performing in the estimated 90th percentile for the bar exam and the 86th-100th in art history.

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Mar 15, 2023

Sniper2L is a high-fidelity Cas9 variant with high activity Chemical Biology

Posted by in categories: biological, chemistry, evolution

Kim et al. used directed evolution methods to identify a high-fidelity SpCas9 variant, Sniper2L, which exhibits high general activity but maintains high specificity at a large number of target sites.

Mar 14, 2023

Logarithmic nature of the brain 💡

Posted by in categories: biological, computing, neuroscience

Shortform link:

My name is Artem, I’m a computational neuroscience student and researcher.

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Mar 12, 2023

Social sponges: Gendered brain development comes from society, not biology

Posted by in categories: biological, neuroscience

After debunking many myths around male and female brains, Gina Rippon’s research interests now include gender gaps in science and why they persist, even in allegedly gender-equal societies.

Mar 10, 2023

An Overview of in Vitro Biological Neural Networks for Robot Intelligence

Posted by in categories: biological, robotics/AI

In vitro biological neural networks (BNNs) interconnected with robots, so-called BNN-based neurorobotic systems, can interact with the external world, so that they can present some preliminary intelligent behaviors, including learning, memory, robot control, etc.

This work aims to provide a comprehensive overview of the intelligent behaviors presented by the BNN-based neurorobotic systems, with a particular focus on those related to robot intelligence.

In this work, we first introduce the necessary biological background to understand the 2 characteristics of the BNNs: nonlinear computing capacity and network plasticity. Then, we describe the typical architecture of the BNN-based neurorobotic systems and outline the mainstream techniques to realize such an architecture from 2 aspects: from robots to BNNs and from BNNs to robots.

Mar 10, 2023

Bioinspired Neural Network Model Can Store Significantly More Memories

Posted by in categories: biological, chemistry, internet, robotics/AI

Researchers have developed a new model inspired by recent biological discoveries that shows enhanced memory performance. This was achieved by modifying a classical neural network.

Computer models play a crucial role in investigating the brain’s process of making and retaining memories and other intricate information. However, constructing such models is a delicate task. The intricate interplay of electrical and biochemical signals, as well as the web of connections between neurons and other cell types, creates the infrastructure for memories to be formed. Despite this, encoding the complex biology of the brain into a computer model for further study has proven to be a difficult task due to the limited understanding of the underlying biology of the brain.

Researchers at the Okinawa Institute of Science and Technology (OIST) have made improvements to a widely utilized computer model of memory, known as a Hopfield network, by incorporating insights from biology. The alteration has resulted in a network that not only better mirrors the way neurons and other cells are connected in the brain, but also has the capacity to store significantly more memories.

Mar 9, 2023

Scientists have created mice with two biological fathers. They say the technique could one day be replicated in humans

Posted by in category: biological

The research, by Osaka University, is early but raises the prospect of male couples may someday have their own biological children.

Mar 8, 2023

Unlocking the Secrets of Water-Ion Interactions in Layered Materials

Posted by in categories: biological, chemistry, nanotechnology, physics

Studying the relationship between the arrangement of water molecules incorporated into layered materials like clays and the arrangement of ions within these materials has been a difficult experiment to conduct.

However, researchers have now succeeded in observing these interactions for the first time by utilizing a technique commonly used for measuring extremely small masses and molecular interactions at the nanoscale.

The nanoscale refers to a length scale that is extremely small, typically on the order of nanometers (nm), which is one billionth of a meter. At this scale, materials and systems exhibit unique properties and behaviors that are different from those observed at larger length scales. The prefix “nano-” is derived from the Greek word “nanos,” which means “dwarf” or “very small.” Nanoscale phenomena are relevant to many fields, including materials science, chemistry, biology, and physics.

Mar 8, 2023

CDR Dr. Jean-Paul Chretien — DARPA BTO — Regeneration, Resuscitation And Biothreat Countermeasures

Posted by in categories: biological, biotech/medical, genetics, health, military, policy, surveillance

Regeneration, Resuscitation & Biothreat Countermeasures — Commander Dr. Jean-Paul Chretien, MD, Ph.D., Program Manager, Biological Technology Office, DARPA

Commander Dr. Jean-Paul Chretien, MD, Ph.D. ( is a Program Manager in the Biological Technology Office at DARPA, where his research interests include disease and injury prevention, operational medicine, and biothreat countermeasures. He is also responsible for running the DARPA Triage Challenge (

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Mar 8, 2023

Things I have (sort of) changed my mind on (2): Life and consciousness

Posted by in categories: biological, neuroscience

Here’s another thing I have changed my mind on. Well, sort of. I used to make fun of “vitalism” and trade insults with my favorite archenemy Dale Carrico. Now I must repent or at least add important qualifications.

Vitalism is currently defined by Wikipedia as “the belief that living organisms are fundamentally different from non-living entities because they contain some non-physical element or are governed by different principles than are inanimate things.”

If we eliminate a few words from this definition we are left with a statement that I don’t disagree with:

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