The Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) includes sensory alterations as one of the four characteristics of restricted / repetitive behavior of people with autism spectrum disorder (ASD). It defines this symptom characteristic as a «hyper- or hyporeactivity to sensory inputs or an unusual interest for sensory aspects of the environment» […]
First of all, I don’t want to mean that a neuron was found in space, but that similarly to the grid cells found by Nobel laureate May-Britt Moser and colleagues another cell type named object-vector cell has been found -also by their group- which is involved in spatial sensation. While grid cells are place modulated […]
The computer metaphor draws an analogy between the mind as software and the brain as hardware. In this metaphor, the focus of discussions is usually on the software part, taking for granted that the brain, or the whole nervous system, is a computer of sorts. But this is something that needs to be proved first […]
Biology • Biomedicine • Computer science • Nanotechnology • Neuroscience • Physics
In 1873, the microscopist Ernst Abbe stipulated a physical limit for the maximum resolution of traditional optical microscopy: 0.2 micrometers, or 200 nanometers (the shortest wavelength for visible light, the extreme limit of violet). This meant that scientists could distinguish whole cells, as well as some parts of the cell called organelles. However, they would […]
The term dyscalculia of the development was proposed for the first time in 1968 by Cohn to describe a learning problem centered in the mathematical operations and in the handling of the numbers. Affected people have serious and chronic difficulties when adding or subtracting and also in the management of the calendar and clock. Dyscalculia […]
The needs imposed by a globalized society that maintains activity 24 hours a day and 7 days a week are being addressed by increasing working hours and extending work activity into the weekend. Karoshi, which can be translated literally as “overwork death” in Japanese, is occupational sudden mortality. In Asian countries, the risk of karoshi […]
Health • Microbiology • Neurobiology • Neuroscience • Physiology
Gut microbiota has a surprising importance in processes related to the development of the nervous system, its functioning and to psychology and behavior, both in people and in animals. The microorganisms produce substances that after crossing the intestinal epithelium reach the blood and through it and after crossing the blood-brain barrier they reach the brain […]
Health • Medicine • Neuroscience • Pharmacy
Ayahuasca is an illegal entheogenic drug, substances that have the capacity to generate a mystical experience, a psychological sensation of contact with the divinity. Ayahuasca is an infusion prepared from the Banisteriopsis caapi liana and other ingredients, which include leaves of Psychotria viridis , Diplopyterys cabrerana and Mimosa tenuiflora . Psychotria has dimethyltryptamine (DMT), a […]
Recently, the journal Science showed in its cover an amazing image of a close up into the fly brain. This is the result of the combined effort of two research groups working on imaging. The first one (Boyden’s) had developed a way to increase the size of preserved samples, like a brain slice, up to […]
I told once to a very dear friend that my daughter had 1200 friends on Facebook and he answered me: well, I have just two and I am not sure about one of them. I hope to be the other one. Friendship is one of the great challenges and pleasures of our existence, one of […]