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Concept Note: Understanding the Human Brain Introduction The brain controls our thoughts, feelings, and reactions. Learning about the brain helps us use it better in daily life. This series explains brain structures, functions, memory techniques, focus improvement, and stress management. Evolution of the Brain The brain evolved for survival, helping early humans detect threats. Now, it handles complex decisions, emotions, and relationships. Understanding this evolution shows how the brain adapts to today’s psychological and emotional challenges. Brain Structure and Main Parts Cerebrum: The largest part, managing complex thinking and decisions. Divided into lobes: Frontal (planning), Parietal (sensory), Temporal (memory and language), Occipital (vision). Cerebellum: Controls movement and balance. Brainstem: Manages automatic functions like breathing and heart rate. Neurons: The Brain’s Communication Pathways Neurons carry messages throughout the brain and body. Structure of a Neuron: Dendrites: Receive messages. Cell Body: Processes messages. Axon: Transmits messages to other neurons. Neurotransmission: The process by which neurotransmitters help neurons communicate. Neuroplasticity and Learning Neuroplasticity allows the brain to adapt and form new pathways. Regular practice strengthens connections, turning new skills into automatic actions. Examples: Learning a new language or skill strengthens neural networks. Overcoming challenges increases resilience. Memory Formation and Types Short-term memory: Holds information briefly for immediate use. Long-term memory: Stores important information permanently. Procedural memory: Retains skills like riding a bike or typing. Techniques for Enhancing Memory and Learning Spaced Repetition: Review information at intervals. Active Recall: Test yourself on the material actively. Focused Sessions and Rest: Balance study with short breaks. Visualization: Imagine concepts visually to aid retention. The Role of Neurotransmitters Chemicals like dopamine (reward), serotonin (mood), and norepinephrine (focus) affect motivation and emotions. Physical activity, a balanced diet, and good sleep support neurotransmitter health. Brain Development Stages Infancy: Rapid growth and learning through sensory experiences. Childhood: Building skills, language, and social awareness. Adolescence: Risk-taking and identity formation, influenced by developing brain regions. Adulthood: Stabilization of skills; brain remains adaptable through learning. Lobes of the Brain and Their Functions Frontal Lobe: Planning, decision-making, impulse control. Parietal Lobe: Processes sensory information like touch. Temporal Lobe: Manages memory and emotion. Occipital Lobe: Processes vision. How We Perceive the World Vision: Processes light and images. Hearing: Interprets sound and speech. Touch: Understands texture and temperature. Taste and Smell: Creates emotional memories linked to flavors and scents. Importance of Nutrition and Sleep for Brain Health Balanced diet and sleep improve memory and focus. Nutrients like omega-3s and antioxidants support cognitive health. Emotions and Decision-Making Brain regions like the amygdala process emotions and affect choices. Neurotransmitters regulate mood, impacting decisions and interactions.