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Pallidotectal projection to the inferior colliculus of the rat

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Summary

After injection of fluorescent tracer into the inferior colliculus (IC), retrogradely labeled cells were observed not only in the temporoauditory cortex (ACx) and the substantia nigra pars lateralis, but also in the globus pallidus (GP). These labeled GP cells were localized exclusively in the caudal portion of the GP, which has been known to project to the ACx. Employing a retrograde fluorescent double labeling technique, the GP-IC neurons were found to be distributed in a separate manner from the GP-ACx neurons within the caudal GP. The present study provides further anatomical evidence that the caudal GP has a functional role in auditory processing.

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Abbreviations

ACx:

temporoauditory cortex

BC:

Brachium conjunctivum

CP:

cerebral peduncle

CPu:

caudate putamen

DY:

Diamidino Yellow

EP:

entopeduncular nucleus

FG:

Fluoro-Gold

GP:

globus pallidus

I:

internal capsule

IC:

inferior colliculus

OT:

optic tract

SC:

superior colliculus

SN1:

substantia nigra pars lateralis

T:

thalamus

TB:

True Blue

TPC:

nucleus tegmenti pedunculopontinus pars compacta

References

  1. Adams JC (1980) Crossed and descending projections to the inferior colliculus. Neurosci Lett 19:1–5

  2. Andersen RA, Snyder RL, Merzenich MM (1980) The topographic organization of corticocollicular projections from physiologically identified loci in the AI, AII and anterior cortical fields of the cat. J Comp Neurol 191:479–494

  3. Coleman JR, Clerici WJ (1987) Sources of projections to subdivisions of the inferior colliculus in the rat. J Comp Neurol 262:215–226

  4. Faye-Lund H (1985) The neocortical projection to the inferior colliculus in the albino rat. Anat Embryol 173:53–70

  5. Jackson A, Crossman AR (1981) Basal ganglia and other afferent projections to the peribrachial region in the rat: a study using retrograde and anterograde transport of horseradish peroxidase. Neuroscience 6:1537–1549

  6. Jones EG (1985) The Thalamus. Plenum Press, New York, pp 425–452

  7. Kudo M, Aitkin LM, Nelson JE (1989) Auditory forebrain organization of an Australian marsupial, the northern native cat (Dasyurus hallucatus). J Comp Neurol 279:28–42

  8. LeDoux JE, Ruggiero DA, Forest R, Stornetta R, Reis DJ (1987) Topographic organization of convergent projections to the thalamus from the inferior colliculus and spinal cord in the rat. J Comp Neurol 264:123–146

  9. LeDoux JE, Ruggiero DA, Reis DJ (1985) Projections to the subcortical forebrain from anatomically defined regions of the medial geniculate body in the rat. J Comp Neurol 242:182–213

  10. Moriizumi T, Nakamura Y, Tokuno H, Kitao Y, Kudo M (1988) Topographic projections from the basal ganglia to the nucleus legmenti pedunculopontinus pars compacta of the cat with special reference to pallidal projections. Exp Brain Res 71:298–306

  11. Olazábal UE, Moore JK (1989) Nigrotectal projection to the inferior colliculus: horseradish peroxidase transport and tyrosine hydroxylase immunohistochemical studies in rats, cats, and bats. J Comp Neurol 287:339–356

  12. Parent A, Boucher R, O'Reilly-Fromentin J (1981) Acetylcholinesterase-containing neurons in cat pallidal complex: morphological characteristics and projection towards the neocortex. Brain Res 230:356–361

  13. Roger M, Arnault P (1989) Anatomical study of the connections of the primary auditory area in the rat. J Comp Neurol 287:339–356

  14. Watanabe K, Kawana E (1979) Nigral projections to the inferior and the superior colliculus in the rat: a horseradish peroxidase study. Okajima Folia Anat Jpn 56:289–296

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Correspondence to T. Moriizumi.

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Moriizumi, T., Hattori, T. Pallidotectal projection to the inferior colliculus of the rat. Exp Brain Res 87, 223–226 (1991). https://doi.org/10.1007/BF00228524

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Key words

  • Globus pallidus
  • Inferior colliculus
  • Retrograde fluorescent tracer
  • Rat