THALAMIC PROJECTIONS TO MOTOR PREFRONTAL, AND SOMATOSENSORY CORTEX IN THE SHEEPSTUDIED BY MEANS OF THE HORSERADISH PEROXIDASE RETROGRADE TRANSPORT METHOD

IN THIS STUDY THE MOTOR, PREFRONTAL AND SOMATOSENSORY AREAS OF THE SHEEP CEREBRAL CORTEX WERE DEFINED ON THE BASIS OF THEIR THALAMIC AFFERENTS TRACED WITH THE HORSERADISH PEROXIDASE METHOD. THE MOTOR AREA (AREAS 4 AND 6) OCCUPIES THE CRUCIATE GYRUS. IT RECEIVES A SUBSTANTIAL PROJECTION FROM THE THALAMIC NUCLEI VEΝTRALIS ANTERIOR, VENTRALIS, LATERALIS, MEDIALIS DORSALIS, AND CENTRALIS LATERALIS AND A SMALLER ONE FROM THE NUCLEI VENTRALIS MEDIALIS, CENTRALIS MEDIALIS, PARACENTRALIS, LATERALIS DORSALIS, LATERALIS POSTERIOR, CEΝTROMEDIANUS, PARAFASCICULARIS, SUPRAGENICULATUS, VENTRALIS POSTEROLAΤERALIS, AND THE MIDLINE NUCLEI. AREA 4 RECEIVES AFFERENTS MAINLY FROM THE NUCLEI VENTRALIS ANTERIOR, VENTRALIS LATERALIS, MEDIALIS DORSALIS AND LATERALIS POSTERIOR, WHEREAS AREA 6 RECEIVES AFFERENTS MAINLY FROM THE NUCLEI VENTRALIS ANTERIOR, MEDIALIS DORSALIS, AND LATERALIS POSTERIOR AND FEWER AFFERENTS FROM THE NUCLEUS VENTRALIS MEDIALIS. THE PREFRONTAL AREA OCCUPIES THE GYRUS PROREUS AND RECEIVES NUMEROUS AFFERENTS FROM THE NUCLEUS MEDIALIS DORSALIS AND FEWER FROM THE NUCLEI LATERALISPOSTERIOR AND VENTRALIS MEDIALIS. THE AREA EXTENDING BETWEEN THE LATERAL FISSURE, THE CORΟNAL SUCLUS, THE PRESYLVIAN SULCUS, AND THE ROSTRAL BRANCH OF THE LATERAL FISSURE IS CONNECTED MAINLY WITH SENSORY THALAMIC NUCLEI. THALAMIC AFFERENTS WERE FOUND TO EMANATE FROM THE NUCLEI VENTRALIS POSTEROMEDIALIS (ITS PARVICELLULAR PART INCLUDED), VENTRALIS POSTEROLATERALIS, VENTRALIS MEDIALIS, PARACENTRALIS, LATERALIS POSTERIOR, MEDIALIS DORSALIS, CENTROMEDIANUS, SUPRAGENICULATUS, PARAVENTRICULARIS, THE SUBSTANTIA NIGRA, AND THE VENTRAL PART OF THELATERAL GENICULATE NUCLEUS. THE FIRST SOMATOSENSORY AREA (JOHNSON ET AL., 17,J.COMP.NEUROL.158: 81-108) WAS FOUND TO EXTEND BETWEEN THE CORONAL, THE DIAGONAL, AND THE ANTERIOR SUPRASYLVIAN SULCI AND TO RECEIVE AFFERENTS ALMOST EXCLUSIVELY FROM THE NUCLEUS VENTRALIS POSTEROMEDIALIS.

Grantor dc:publisher

Aristotle University Of Thessaloniki (AUTH)

Year dc:date

1984

Authors dc:creator

• Dinopoulos, Athanasios
• Ντινόπουλος, Αθανάσιος

• Θάλαμος
• ΘΑΛΑΜΟΦΛΟΙΩΔΕΙΣ ΣΥΝΔΕΣΕΙΣ
• Ιστοχημεία
• Πρόβατα
• Υπεροξειδάσες, Ένζυμα
• Φλοιός
• Cortex
• Histochemistry
• HORSERADISH PEROXIDASE
• Sheeps
• THALAMOCORTICAL CONNECTIONS
• THALAMUS
• Γεωπονικές Επιστήμες και Κτηνιατρική
• Κτηνιατρική
• Agricultural and Veterinary Sciences
• Veterinary Science

Language dc:language

gre

Identifier

10.12681/eadd/0029

OAI identifier oai:identifier

oai:10442/0029