The book "Brain Science of Exams" by Yuji Ikegaya, a professor specializing in brain science at the University of Tokyo, offers an updated perspective on effective memory techniques, originally presented in his earlier work, "High School Student Learning Methods." The author explains that the human brain, primarily optimized for survival, tends to forget information quickly unless it's deemed essential by the hippocampus, a key memory processing area. To retain more information for exams, the book emphasizes repeated exposure and knowledge output, while also suggesting methods to enhance memory efficiency through theta waves (linked to curiosity and movement), the amygdala (activated by emotions), and creating associations with new information. Furthermore, it addresses the brain's natural tendency for fuzzy memory, proposing a step-by-step, gradual refinement approach to learning, moving from general concepts to specific details, to ensure more accurate and robust retention.