The Event List is the most powerful, flexible, and complete MIDI editor in Logic Pro. All MIDI event types are displayed as an alphanumerical list in the Event List. All aspects of events—start and end points, length, channel, and values—can be altered in this area. You can view all events in a region, and can filter the list to restrict this view to one or more event types, such as notes, pitch bend events, or both, for example. This makes the selection and editing of events faster and simpler.
All functions and options are shown at the top of the Event List area. The events themselves are shown in the list below.
Click the List Editors button 
in the control bar, then click Event (or use the Toggle Event List key command, default assignment: E).
Choose Window > Open Event List (or use the Open Event List key command, default assignment: Command-7).