Their findings showed that Penfield's map, limited by the technologies of his time, needed changes.

他们的发现表明，彭菲尔德的脑图受到他那个时代技术的限制，需要改变。

The researchers used modern brain-imaging techniques to test an important map established ninety years ago by brain surgeon Wilder Penfield.

研究人员使用现代脑成像技术来测试90年前由脑外科医生怀尔德·彭菲尔德建立的重要脑图。