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What is neuroscience? Neuroscience is the scientific study of nervous systems. Neuroscience can involve research from many branches of science including those involving neurology, brain science, neurobiology, psychology, computer science, artificial intelligence, statistics, prosthetics, neuroimaging, engineering, medicine, physics, mathematics, pharmacology, electrophysiology, biology, robotics and technology.
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What is Psychology? Definition of Psychology: Psychology is the study of behavior in an individual, or group. Psychology news articles are listed below.
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Summary: Computational power is amplified in the brain by newly discovered action potentials in dendrites.
Newly discovered action potentials in neuronal dendrites uniquely amplify the computational power of the human brain, according to a new study. The results provide critical insights into the physiological circuits that underpin cortical network behavior.
While it’s widely understood that the active electrical properties of dendrites play a critical role in neuronal signaling and are fundamental to brain function, much of what is known about active dendrites has been gleaned from the brains of rodents.
Unlike rodent brains, however, the human brain’s cortical layers are thick – particularly layer 2 and 3 (L2/3), which contains numerous neurons with large and elaborate dendritic trees.
Recent studies have shown a developmental program that drives the disproportionate thickening of L2/3 – a unique characteristic that may be fundamental to what makes us human.
Albert Gidon and colleagues used somato-dendritic patch clamp and two-photon imaging to directly probe the active properties of L2/3 dendrites in slices of human brain tissue. The investigation revealed several previously unidentified electrical properties unique to L2/3 neurons unknown in all other neurons studied to date. Gidon et al. also identified a new class of dendritic calcium action potentials (dCaAPs).
The findings make the activity of L2/3 dendrites far more complex than previously thought, according to the authors.
By modeling their properties, the authors demonstrate the ability of single neurons to solve computational problems that were previously thought to require multi-layer neural networks.
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Source: AAAS Media Contacts: Science Press Package Team – AAAS Image Source: The image is in the public domain.
Original Research: The study will appear in Science.
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