The human brain has 100 billion neurons, each neuron…

The brain immediately confronts us with its great complexity. The human brain weighs only three to four pounds but contains about 100 billion neurons.

— Gerald Fischbach

There are 100 billion neurons in the adult human brain, and each neuron makes something like 1,000 to 10,000 contacts with other neurons in…

— Vilayanur S. Ramachandran

“Our brains contain one hundred billion nerve cells (neurons). Each neuron makes links with ten thousand other neurons to form an incredible three dimensional…

— Nessa Carey

In its evolution from a more primitive nervous system, the brain, as an organ with ten or more billion neurons and many more connections…

— Stanislaw Ulam

“The human brain operates electro-chemically. Each neuron can fire, carrying an input/output signal 100 times a second. Each neuron has roughly 10,000 connections. There…

— David Simpson

“There are an estimated 100 billion neurons residing inside the skull with an exponential amount of neural connections”

— Michio Kaku

“During the twentieth century, neuroscientists and psychologists also came to more fully appreciate the astounding complexity of the human brain. Inside our skulls, they…

— Nicholas Carr

“The human brain has billions of neurons and hundreds of billions of interconnections. It can process more than two million bits of information per…

— Ben Carson

The brain immediately confronts us with its great complexity. The human brain weighs only three to four pounds but contains about 100 billion neurons.…

— Gerald Fischbach

“Concepts of memory tend to reflect the technology of the times. Plato and Aristotle saw memories as thoughts inscribed on wax tablets that could…

— Michael Specter

With its billions of interconnected neurons, whose interactions change from millisecond to millisecond, the human brain is an archetypal complex system.

— Miguel Nicolelis

Unlike the heart or kidney, which have a small, defined set of cell types, we still do not have a taxonomy of neurons, and…

— Thomas R. Insel

“The complexity of the resulting signalling network in the brain is almost unimaginable: one hundred billion neurons each with one thousand synapses, producing a…

— Michael O'Shea

“As you read this, in the five cups of tofu-like tissue inside your head, nested amid a trillion support cells, 80 to 100 billion…

— Rick Hanson

“These computer simulations try only to duplicate the interactions between the cortex and the thalamus. Huge chunks of the brain are therefore missing. Dr.…

— Michio Kaku