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In a recent study published in Nature, researchers used advanced brain imaging techniques to explore how certain brain networks differ in people with depression. They discovered that a specific brain network, known as the “salience network,” was on average twice as large in individuals with depression compared to healthy individuals. The salience network plays a key role in processing rewards and deciding what deserves attention, and this expansion could help explain some unique mental and emotional features of depression.
Depression is a mental health disorder that affects millions worldwide, characterized by persistent sadness, lack of interest in activities, fatigue, and changes in appetite and sleep. These symptoms often come in episodes, meaning that individuals may experience periods of wellness before depression symptoms return. Depression’s effects go beyond mood, impacting a person’s ability to function in daily life, relationships, and work, making it one of the leading causes of disability.
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