The video starts with a 3D wireframe model of a human brain, which is shown from different angles. The brain is depicted in white lines on a black background, highlighting the intricate network of connections within the brain. As the video progresses, the focus shifts to a close-up of a neuron, with the same wireframe technique used to show the complex structure of the neuron and its connections. The video provides a detailed and scientific look at the human brain and its neural networks.