| behavior of scn-lesioned chipmunks in natural habitat: a pilot study. | the necessity of a circadian pacemaker, the suprachiasmatic nuclei (scn), for survival was evaluated in a population of approximately 65 wild eastern chipmunks, tamias striatus. the research involved over 3000 h of field-work between may 1995 and october 1997 on a study site at mountain lake biological station, virginia. the 28 chipmunks randomly designated as project animals included 10 scn-lesioned chipmunks, 5 surgical controls (sham-lesioned), and 13 intact controls. visual observation, live ... | 1998 | 9615287 |