Afferents to the cochlear nuclei and nucleus laminaris from the ventral nucleus of the lateral lemniscus in the zebra finch (Taeniopygia guttata).
The presence and nature of a descending projection from the ventral nucleus of the lateral lemniscus (LLV) to the cochlear nuclei (NA, NM) and the third-order nucleus laminaris (NL) was investigated in a songbird using tract tracing and GAD immunohistochemistry. Tracer injections into LLV produced anterograde label in the ipsilateral NA, NM and NL, which was found not to be GABAergic. Double retrograde labeling from LLV and NA/NM/NL ruled out the possibility that the LLV projection actually arose from collaterals of superior olivary projections to NA/NM/NL. The LLV projection may be involved in the discrimination of laterality of auditory input.
Wild
J M
JM
Department of Anatomy with Radiology, School of Medical Sciences, Faculty of Medical and Health Sciences, University of Auckland, PB 92019,Auckland, New Zealand. jm.wild@auckland.ac.nz
Krützfeldt
N O E
NO
Kubke
M F
MF
D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D001306:Auditory Pathways / Q000166:cytology / Q000201:enzymology / Q000502:physiology*; D001710:Biotin / Q000008:administration & dosage / Q000031:analogs & derivatives; D002772:Cholera Toxin / Q000008:administration & dosage; D017626:Cochlear Nucleus / Q000166:cytology / Q000201:enzymology / Q000502:physiology*; D003911:Dextrans / Q000008:administration & dosage; D046369:Finches / Q000502:physiology*; D005968:Glutamate Decarboxylase / Q000032:analysis; D007150:Immunohistochemistry; D007267:Injections; D008297:Male; D056347:Neuroanatomical Tract-Tracing Techniques; D056325:Neuronal Tract-Tracers / Q000008:administration & dosage; D009474:Neurons / Q000201:enzymology / Q000502:physiology*; D009847:Olivary Nucleus / Q000502:physiology
D003911:Dextrans; D056325:Neuronal Tract-Tracers; C076397:biotinylated dextran amine; D001710:Biotin; D002772:Cholera Toxin; D005968:Glutamate Decarboxylase