Sensations which seem to come from limbs that had been amputated are called «phantoms». Most limb amputees report awareness of a phantom limb, i.e., the perceived presence of the missing arm or leg. Phantom sensations may also occur after the removal of body parts other than the limbs, e.g. after amputation of the breast, extraction […]
As we saw in the previous entry of this series, philosophers of mind usually distinguish between what (after David Chalmers) they called the ‘easy’ and the ‘hard’ problem of consciousness. The ‘easy’ problem refers to how to explain the functioning of the brain: how does it manage to do things that seem to require some […]
One of the most strongly debated philosophical problems is that of the nature of consciousness. This is no surprise, since it is probably the most difficult question, at least apparently, for naturalistic or materialistic views of the world. After all, the necessity of having a spiritual cause of the existence and order of the cosmos […]
Humans have known and used the cannabis plant for as long as 10,000 years. During this time it has been utilized to such different things as to make ropes and clothes, to induce mental states in religious rituals and to treat diseases. Once considered a sacred plant, possession and use of cannabis is illegal in […]
The human brain is arguably the most fascinating organ found in nature. Its complexity has been known since Santiago Ramón y Cajal pioneering work showed the central nervous system (CNS) was a contiguous neuronal network where neuron is the basic unit as opposed to the view of the brain being a single continuous network (reticulum) […]
Biochemistry • Biology • Materials • Molecular biology • Neuroscience
Some jellyfish species are beautifully fluorescent in the dark ocean, emitting light from different parts of their bodies in a process that is thought to help them to warn off predators. The molecular biology behind this process of glowing is possible thanks to one of the most famous proteins in molecular biology, the green fluorescent […]
People , like cats, are curiosity-driven creatures that manifest unique inclinations towards certain stimuli. Curiosity´s unavoidability has been immortalized in the proverb of the cat. Could we be so extremely pulled by this impulse to the level of endangering ourselves for the mere sake of its satisfaction? The flip side of the coin is an […]
Alzheimer’s disease (AD) is one of the most devastating human pathologies. AD is the leading cause of age-related dementia and currently afflicts more than 44 million persons worldwide (World Alzheimer Report 2014). It is characterized by a cognitive decline and memory loss and by the appearance of two pathological hallmarks: beta amyloid plaques and cytoskeletal […]
The study of the spontaneous activity in the brain –and its origin– is one of the major puzzles in modern neural science. In many situations, the same neurons which behave smoothly and in an easily predictable way in in vitro experimental conditions, turn into unpredictable units, firing spikes irregularly and even chaotically, when they are […]
Some weeks ago in Naukas.com I wrote (in Spanish) about the wonderful latest video released by the team responsible for the Inner Life of a Cell which deals with the intricacies of cell trafficking in the inside of a neuron. Today I want to discuss an article recently published in the journal Science and that […]