A new study offers fascinating insights into the decision-making process of the brain by comparing how both humans and rodents make decisions, especially when stressed or affected by a neurological disorder.

A data-driven approach to study the mechanisms underlying altered reward processing in individuals with Parkinson’s Disease.

Chemogenetics is a technique that uses chemicals to understand how neurons are activated. It manipulates genes to place the neurons under the control of special receptors called DREADDS. Short for Designer Receptors Activated by Designer Drugs, these receptors only bind to an inert chemical called Clozapine-N-Oxide (CNO). In a recent study, researchers from the Tata Institute of Fundamental Research (TIFR), Mumbai, and Jawaharlal Nehru Center for Advanced Scientific Research (JNCASR), Bengaluru, point out specific flaws in this technique.

Our nervous system is one of the most complex systems in our body. It consists of billions of nerve cells that work in tandem and processes billions and billions of calculations per second. But how are these neurons formed in our body and what controls them? In a recent study, scientists have discovered a molecule that they claim controls the mechanism in which nerve cells are formed. This study may help uncover some of the key aspects that can treat neurodegenerative disorders like Parkinson’s.

A new study has now revealed how knowing beforehand what to look for, helps in our visual search process. Previews – bits of information available in advance, are shown to accelerate our search process as the brain can differentiate and identify the object we are looking for, even among a large set of identical objects. This discovery throws some light on the neurological process responsible for visual search and recognition. 

If you have read Malcolm Gladwell’s ‘Outliers,' then you might be well acquainted with the ‘10,000-hour rule’, which states that to master a new skill, such as playing the piano or knitting, one needs 10,000 hours of practice to become world-class. This long practice, studies show, facilitates ‘motor learning’ - a set of complex processes that occur in the brain in response to practice or experience of a certain skill, resulting in changes in the central nervous system.