Graffito prisonnier de 1797, Château de Foix

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The human brain is a highly complex and dynamic organ that plays a crucial role in processing information and controlling movement. It consists of billions of specialized cells called neurons that communicate with each other through electrical and chemical signals. The brain's ability to learn and adapt is largely due to the formation of new neural connections, known as synapses, which allow it to reorganize itself in response to changing environments and experiences.