What Is the Reward System of the Brain?

What Is the Reward System of the Brain?

The brain reward system or mesocorticolimbic circuit is a brain circuit that controls addictive behaviors, mood, feeding behaviors, positive emotions (e.g., pleasure), and learning [1]. 1. What Activates the Reward System? The reward system is activated every time we experience something rewarding. For instance, the reward system is triggered when eating something we really enjoy…

What Part of the Brain Controls Memory?

What Part of the Brain Controls Memory?

There are several parts of the brain where memories are stored depending on the type of memories: Explicit Memories are long-term memories that are stored in the following brain structures: Implicit Memories are long-term memories that are stored in the following brain structures: Working Memory and short-term memory are stored in the following brain structure:…

How Does Smell Get from the Nose to the Brain?

How Does Smell Get from the Nose to the Brain?

Odorous substances in the air are processed through the following steps: 1. What Part of the Brain Is Most Responsible for Smell? There are several and important parts of the brain that are responsible for smell; however, the olfactory bulb is responsible for transmitting the olfactory (smell) information from the olfactory nerves to the brain…

What Is the Biology of Fear and Anxiety?

What Is the Biology of Fear and Anxiety?

Fear is a primitive human emotion that is caused by specific threat-related stimuli leading to adaptive behaviors aimed at preventing or coping with that threat. The central organ that controls and regulates fear is the amygdala, an almond-chapped structure located deep within the brain’s temporal lobes. 1. What Is the Function of the Amygdala in…

Exercise and Cognitive Deficits

Exercise and Cognitive Deficits

Exercise and Cognitive Deficits are two interconnected aspects of overall health and well-being that have gained increasing attention in recent years. While cognitive deficits can impact various aspects of daily life, including memory, attention, and decision-making, exercise has emerged as a promising intervention for improving cognitive function. This article delves into the fascinating relationship between…

The Gut Flora and Alzheimer’s Disease (AD)

The Gut Flora and Alzheimer’s Disease (AD)

The hallmark of Alzheimer’s disease (AD) is associated with the accumulation of “senile” plaques that are composed of amyloid-beta (Aβ) protein that surround neurons in affected regions. This accumulation results in loss of neurons in the hippocampus and cerebral cortex, leading to progressive cognitive decline such as memory defects. A connection between the brain and…