Nucleus Accumbens is a free Chrome extension designed to enhance study sessions by limiting access to distracting websites based on user progress in Anki or question bank studies. This tool is particularly beneficial for students and professionals who wish to maintain focus while preparing for exams. By blocking popular time-wasting sites like YouTube and Instagram, it encourages productivity through a unique reward system that temporarily grants access to these sites upon completing study tasks.

The extension seamlessly integrates with the Dopamine Anki add-on, allowing users to customize their experience. Users can adjust settings such as blocked websites, reward duration, and connected question banks. Additionally, it features automatic video pausing on platforms like Instagram Reels and YouTube Shorts, minimizing distractions. Overall, Nucleus Accumbens serves as an effective tool for maintaining focus during study sessions, offering structured breaks as rewards for achieving study goals.