Recent　studies　indicated　that　the　pre-motor　area　may　be　recruited　in　human　higher　level　cognitive　functions,　including　inductive　reasoning.　In　the　present　study,　a　typical　task　of　inductive　reasoning,　function-finding,　was　explored　using　functional　MRI.　fMRI　results　showed　the　significant　activation　of　bilateral　pre-motor　cortex　(　BA　6),　and　its　left　lateralization.　Taking　together　the　previous　studies　and　the　present　experimental　design,　we　concluded　that　the　left　pre-motor　cortex　in　the　present　study　may　associate　with　implicit　relation　synthesis,　while　the　right　pre-motor　cortex　may　reflect　spatial　information　processing　involved　in　arithmetic　rules.　(C)　2008　Elsevier　B.　V.　All　rights　reserved.