1. Albers H. E. & Ferris C. F. 1984 N europeptide Y: role in lig h t-d ark cycle entrainm ent of ham ster circadian
2. etal. 1993). In either case the
3. rhythm s. Neurosci. Lett. 50 163-168.
4. blocking effect of light in the mid subjective day on
5. non-photic shifting means that although light does not