The popular, even ubiquitous metaphor used in cognitive neuroscience is that the brain can be likened to a computer. The similarities seem obvious: neuronal activity is binary (a neuron is either depolarized (ON) during an action potential or polarized (OFF) when inactive); our vision and hearing has many aesthetic similarities to a computer display (indeed, the monitor is made exactly to fit the human experience of colors, shapes, etc.); humans process information (we can sit down and think through a math problem, for instance). So on and so forth. But is the “brains are computers” metaphor accurate? And if not, then is adherence to this metaphor slowing down progress in neuroscience?
Possibly the most important part of the mental model humans construct is their mental model of themselves. This is what we call our identity. It takes all the beliefs we have about ourselves and attempts to put them together into an internally coherent whole. Some of our most cherished political, religious, racial, and gender thoughts about ourselves tells us who we are and how we ought to interact with the world.