macro image of nerves, neurons firing microscope

light sunlight flower night reflection yellow leaf branch darkness line circle lighting petal autumn plant flame red sparkler sparks energy nerves neurology anatomy close-up biology medical cells fibers network communication synapse neuron impulses electrical system brain spinal cord sensation signals myelin dendrites axons receptor transmission synaptic connectivity sensitivity stimuli perception impulse intricate delicate complexity pathways interconnected functions neuro macro neurons fireing firing microscope electron