Category archives: Neurobiology

Studying language in people with dementia

Studying language in people with dementia

LinguisticsNeurobiology

By Adrià Rofes

People who are diagnosed with dementia may initially report problems on memory and/or language that affect their activities of daily living. Once factors such as depression, delirium, or mild cognitive impairment, are disregarded, these people are typically referred to a neurologist, radiologist, and neuropsychologist or speech therapist who will help them to understand the reason […]

Starving the brain

Starving the brain

Molecular biologyNeurobiology

By Carlos Rueda

Life is sustained by chemical reactions, and the countless reactions that take place in the cells of living organisms that are responsible for every biological process are known as energetic metabolism. Among the others, the brain stands as the most energy-consuming organ, accounting for up to 20 % of the body’s total haul while representing […]

Folded brains

Folded brains

Neurobiology

By José Ramón Alonso

There are two main groups of mammalian brains. Lissencephalic brains have a smooth surface and can be found, for example, in mice, rats or manatees. Gyrencephalic brains, by contrast, have deeply folded brains with gyri (ridges) and sulci (depressions or furrows). They are found, for example, in cats, dogs, pigs, whales, elephants and primates including […]

Man of the birds

Man of the birds

BiologyNeurobiology

By José Ramón Alonso

Fernando Nottebohm was born in Buenos Aires in 1940, a second generation Argentine. Animals fascinated him since he was a child and he always wanted to understand how birds sing. After moving to the United States, he began to investigate the bird behavior and he found, using unilateral denervation of the syrinx, song handedness, i.e […]

The brain has a direct connection to the lymphatic system

The brain has a direct connection to the lymphatic system

BiomedicineNeurobiologyNeuroscience

By José Ramón Alonso

The lymphatic system performs important immune functions, and runs parallel to the blood circulatory system to provide a secondary circulation that transports excess interstitial fluid, proteins and metabolic waste products from the systemic tissues back into the blood. For centuries, it was thought that the central nervous system lacks a lymphatic drainage system and the […]

On the quantum theory of consciousness

On the quantum theory of consciousness

BiologyNeurobiologyQuantum physics

By Francisco R. Villatoro

The Penrose–Hameroff theory of orchestrated objective reduction (Orch OR) claims that quantum computations in the brain account for consciousness . The communication among neurons by the secretion of neurotransmitters is based on synaptic vesicles distributed along their axons. The neuronal cytoskeleton has a key role in the dynamics of these vesicles. In the 1990s, Stuart […]