La frase que propones es uno de los principios de la neurociencia y del neuromarketing (Donald Hebb). Son las neuronas las que se disparan de forman concurrente formando asociaciones (neuronales) entre sí.

"One of the key factors in the human brain’s ability to change via neuroplasticity is that neurons form interconnections based on simultaneous firing over a period of time. According to Norman Doidge, author of The Brain That Changes Itself, this theory was first proposed by none other than Sigmund Freud, but was articulated in more detail by Canadian psychologist Donald Hebb. ***Doidge attributes this neat summary to neuroscientist Carla Shatz: Neurons that fire together wire together.***"

http://www.neurosciencemarketing.com/blog/articles/neurons-f...

http://books.google.es/books?id=yWiysczvwM8C&pg=PA95&lpg=PA9...

"En su lugar usa una neurona fenomenológica: tiene entradas y salidas, implementa sinapsis, algún neurotransmisor, potenciales de acción (spikes) y plasticidad sináptica o aprendizaje según el modelo de Donald Hebb: ***"las neuronas que se disparan juntas, se conectan entre sí"***. Esto reduce enormemente los requerimientos computacionales y preserva la funcionalidad del modelo.

http://sinapsis-aom.blogspot.com.es/2011_08_01_archive.html

"People often ask me how Neurofeedback works. It’s a simple concept that, what “fires” together “wires” together in our brain. In other words what experiences and reactions we have to daily life create connections in the brain. The neurons that fire at the same time connect (or wire) with each other. This is a powerful idea and one that can change your life when you begin to implement it daily.
How does it happen? Well, the brain does not judge whether something is good or bad for you, it simply makes more connections the more often you think, feel, or do something. Neurologically, the brain figures that if you are repeating something, there must be a reason and so it makes more connections to continue making that something. The more you think negatively, the more likely you are to continue thinking"

http://www.novianneurofeedback.com/blog/?p=27

http://books.google.es/books?id=g3p749ZQCWUC&pg=PA398&lpg=PA...