The brain physically changes in response to experience. Learning creates and strengthens neural connections while disuse weakens them. Understanding neuroplasticity reveals why practice matters, how habits form, and what makes changing behavior so difficult yet ultimately possible.

Consciousness emerges from neural dynamics in ways we don't fully understand. The hard problem—explaining how physical processes produce subjective experience—remains unsolved. Yet neuroscience reveals correlates between brain states and conscious experience, showing that consciousness depends on specific neural patterns and architectures.