Figure 3. Input-output organization of cerebellar loops with M1 and with area 46.
Top: Organization of cerebellar loops with M1. Left, the distribution of Purkinje cells (small dots) that project to the arm area of M1. These neurons were labeled after retrograde transneuronal transport of rabies from injections into the arm area of M1. Right, the distribution of granule cells (fine lines) that receive input from the arm area of M1. These neurons were labeled after anterograde transneuronal transport of the H129 strain of HSV1 from injections into the arm area of M1. Bottom: Organization of cerebellar loops with area 46. Left, the distribution of Purkinje cells (small dots) that project to area 46. These neurons were labeled after retrograde transneuronal transport of rabies virus from injections into area 46. Right, the distribution of granule cells (fine lines) that receive input from the area 46. These neurons were labeled after anterograde transneuronal transport of the H129 strain of HSV1 from injections into the area 46. Adapted from [10].