Intrahypothalamic connections: An electron microscopic study in the rat

L. Záborszky, G. B. Makara

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60 Scopus citations


Terminal degeneration within the hypothalamus was studied by electron microscopy 1 or 2 days (1) after carefully placed microlesions in the arcuate, anterior periventricular, ventromedial, premammillary and posterior hypothalamic nuclei and (2) after microlesions placed in the hypothalamus deafferented 3 weeks earlier. In the median eminence terminal degeneration was found after each of these lesions. Projections from the ventromedial nucleus reach the arcuate, suprachiasmatic, and anterior periventricular nuclei. Projections from the arcuate nucleus terminate in the medial preoptic, anterior periventricular, and ventromedial nuclei. After lesioning the premammillary nuclei degeneration was found in the supraoptic, arcuate, anterior hypothalamic and ventromedial nuclei.

Original languageEnglish (US)
Pages (from-to)201-215
Number of pages15
JournalExperimental Brain Research
Issue number2
StatePublished - Jan 1979
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)


  • Deafferentation
  • Electron microscopy
  • Intrahypothalamic connections
  • Rat


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