8% to 15% or so... out of the 100 billion or so
Projection Fibres
15%
Approximately 30 of the brain is typically utilized for processing visual information.
14%
Neurons make up only about 10% of the cells in the nervous system but they play a crucial role in transmitting and processing information. Glial cells, which provide support and protection to neurons, make up the majority of cells in the nervous system.
sensory neurons
Sensory Neurons
The process in which unused neurons atrophy and die is known as neuronal pruning. This occurs primarily during development when the brain eliminates excess neurons and synapses that are not being utilized, thereby optimizing neural connections. Neuronal pruning is crucial for efficient brain function and is influenced by experiences and learning. It helps refine neural circuits to enhance cognitive abilities and overall brain efficiency.
Sensory neurons and neurons are connected by Interneurons.
Afferent Neurons
Interneurons or association neurons.
Motor neurons and intern neurons