Larry Squire

Declarative memory supports conscious recollection of facts and events, while nondeclarative memory includes skills, habits, priming, and conditioning. Squire's framework linked these forms of memory to partly different brain systems.

His patient studies showed that damage to the hippocampus and related medial temporal structures severely disrupts the formation of new declarative memories. The same patients may still acquire some motor skills or other nondeclarative learning without remembering the training sessions.

Patient H.M., later identified as Henry Molaison, became the classic demonstration that medial temporal damage can produce profound anterograde amnesia. Squire extended this line of research through additional patients and anatomical models of declarative memory.

No. It distinguishes declarative memory from several nondeclarative systems, including procedural skills, priming, and conditioned responses, rather than assigning every kind of learning to one store.