The ethical questions raised by emerging neuro-technologies Spectral-Design/Shutterstock Neuroscience is heading into an ethical minefield with the rise of research on “human brain surrogates”. That’s according to a new paper by Henry T. Greely in the American Journal of Bioethics, titled Human Brain Surrogates Research: The Onrushing Ethical Dilemma Greely defines ‘human […]

Neuronal fibers in a healthy brain (top) and a brain with agenesis of the corpus callosum (bottom). In the healthy brain, the two hemispheres are connected by the corpus callosum fibers, shown in red. These fibers are absent in the brain with corpus callosum agenesis. Credit: Unige/Siffredi People born without […]

Researchers provide the first physiological evidence that a foundational center of the brain influences how sound is processed, identify a previously unknown neural circuit. For the first time, researchers have provided physiological evidence that a pervasive neuromodulation system―a group of neurons that regulate the functioning of more specialized neurons―strongly influences […]

ANIMATION Norepinephrine release to cells is diminished, causing cascade of effects. In a new paper, researchers from The University of Texas Health Science Center at San Antonio (UT Health San Antonio) report brain chemistry that may contribute to why drinkers have difficulty paying attention while under the influence. The work […]

Buriolestes schultzi brain. Credit: Márcio L. Castro The study of the brain of extinct organisms sheds lights on their behaviors. However, soft tissues, like the brain, are not usually preserved for long periods. Hence, researchers reconstruct the brains of dinosaurs by analyzing the cranial cavities under computed tomography. It demands […]

“As we age, it’s harder to have a get-up-and-go attitude toward things,” says study author Ann Graybiel. Credit: Christine Daniloff, MIT Research on mice suggests aging affects a brain circuit critical for learning to make some types of decisions. As people age, they often lose their motivation to learn new […]

Similar to the cortex of mammals, the nerve cells in certain areas of the brain of birds are organized in vertical layers and horizontal columns. Credit: RUB, Biopsychlogy Some birds can perform amazing cognitive feats – even though their forebrains seem to just consist of lumps of grey cells, while […]

“Area 32” balances activity from cognitive and emotional brain areas in primates. Navigating through life requires balancing emotion and reason, a feat accomplished by the brain region “area 32” of the anterior cingulate cortex. The area maintains emotional equilibrium by relaying information between cognitive and emotional brain regions, according to […]