Interactions between Associative Synaptic Potentials in the Piriform Cortex of theIn VitroIsolated Guinea Pig Brain
| Autor: | Gerardo Rosario BIELLA, Marco De Curtis, Ferruccio Panzica |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Cerebral Cortex
Olfactory system Afferent Pathways Brain Mapping Chemistry General Neuroscience Guinea Pigs Stimulation Olfactory Pathways In Vitro Techniques Synaptic Transmission Electric Stimulation In vitro Guinea pig Nerve Fibers medicine.anatomical_structure Lateral olfactory tract Cortex (anatomy) Piriform cortex medicine Animals Evoked Potentials Neuroscience Associative property |
| Zdroj: | European Journal of Neuroscience. 8:1350-1357 |
| ISSN: | 1460-9568 0953-816X |
| DOI: | 10.1111/j.1460-9568.1996.tb01597.x |
| Popis: | The interaction between synaptic potentials generated by the activation of separate sets of associative fibres was investigated in the piriform cortex of an in vitro isolated guinea pig brain preparation. Restricted regions of the piriform cortex served by separate contingents of afferent fibres of the lateral olfactory tract were isolated surgically. The activity generated by these patches of cortex in response to afferent stimulation propagates to remote cortical regions along cortico-cortical associative fibres. Current source density (CSD) analysis of field potential laminar profiles evoked by lateral olfactory tract stimulation confirmed that the synaptic sinks induced by distinct associative fibre contingents converge on the apical dendrites of piriform cortex neurons in the superficial lb layer. Pairing between potentials evoked by activation of two separate sets of associative fibres resulted in an almost linear summation when the two responses coincided. For interstimulus intervals of |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text