1.   The idea is supported by classical experiments in which doctors inserted tiny electrodes into the brains of awake patients.

2.   These chemicals encourage nerve growth so, over several months, neurons in the cortex grow pathways into the cones and attach themselves to tiny electrodes mounted inside.

3.   Tiny electrodes were implanted in the neurons of the monkeys to measure their activity.

4.   He starts by taking cells from mouse embryos and squishing them between two glass plates in a five-centimeter square, loaded with tiny electrodes.

5.   Once the holes were drilled, surgeons inserted two tiny electrodes deep in his brain.