Complex sentence: Influenced by Jackson, who became his close friend and mentor, Ferrier decided to embark on an ambitious experimental program with the aim of extending the results of two German physiologists, Eduard Hitzig (1838-1907) and Gustav Frisch (1837-1927).
Split into simpler sentences: Influenced by Jackson, who became a close friend and mentor, Ferrier decided to embark on an experimental program. It aimed to extend the results of two German physiologists, Eduard Hitzig (1838-1907) and Gustav Frisch (1837-1927).