CONTROL PATTERN OF NUCLEUS DORSALIS MEDIALIS OF THE INTERCOLLICULAR COMPLEX (DM) FOR VOCALIZATION IN BRAMBLE FINCH (Fringilla montifringilla)
燕雀丘间复合体背内侧核对叫声的调控模式

The basic vocal center was located in nucleus dorsalis medialis of the intercollicular com-plex (DM) in songbirds. Control pattern of DM for vocalization is to evoke single call. The characteris-tics of evoked-call from DM were studied by the methods of electrophysiology and acoustics in bramble finch (Fringilla montifringilla). The results showed that the duration and the width of main energy band of the evoked calls from left-side DM were twice and 1.7 to 3.1 times longer than that of the right side in sonograms and spectra respectively. It suggests that DM has left-side dominance in both length and energy of evoked-call. It also indicates that the left-side dominance in vocal control, is not only exhibited in the high vocal center (HVC) and nucleus robustus archistriatalis (RA), the higher vocal centers, but also in DM, the lower vocal center. There are internal connections between the high vocal centers and basic vocal centers in songbirds.