The jury is still out about this question. It has been for the last fifty years or so. The proponents of "Strong AI" say that Artificial Intelligence should be a model of human intelligence. The camp of "Weak AI" says that any computer program doing a reasonable job at a task that should require intelligence is intelligent. The Turing test goes with the latter. Many successes of computer applications - e.g. computer chess machines, OCR, speech recognition, web search - use methods which are probably very different than what the human brain uses.