Howard Eichenbaum is at the Laboratory of Cognitive
Neurobiology, Department of Psychology, Boston University,
64 Cummington Street, Boston, Massachusetts
02215, USA. hbe@bu.edu
Declarative memory, the conscious recollection of past experiences, is
known to involve the hippocampus. Now a study of amnesic patients shows that
hippocampus-dependent learning can occur in the absence of conscious awareness.