Intracellular recording from cortical pyramids and small interneurons as identified by subsequent staining with the recording microelectrode

Holubar, J; Hanke, B.; Malik, V.

doi:10.1016/0014-4886(67)90024-6

Cited by 8 publications

(1 citation statement)

References 7 publications

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“…Bisher wurden hemmend wirkende corticale Zwisehenneurone nur vereinzelt abgeleitet [13,22,35]. Ihre Existenz wurde auf Grund funktioneller Zusammenh~nge bei rekurrenter and lateraler Hemmung [2,4,27,37,58,59] and durch morphologisch gewonnene Ergebnisse aus den Schichten III und V [8,15,45,60] vermute~.…”

Section: Ipspunclassified

Evozierte Enthemmung und Bahnungsminderung in corticalen Nervenzellen

Vieth

Kneise

Käferlein

1974

Arch. F. Psychiatr. U. Z. Neur.

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In pyramidal cells of the cat's sensorimotor cortex two kinds of hyperpolarization i.e. of either short (less than 100 msec) or long duration (up to 200 msee or more) can be evoked. Both begin with an inhibitory postsynaptie potential (IPSP) of up to 60 msec duration, which consists of a series of single steps which can be in phase with the intervals between action potentials of high frequency discharges probably from interneurons.The IPSP of evoked hyperpolarization of short duration is followed by a disinhibition which obviously corresponds to a discharging pause of inhibitory interneurons which are responsible for establishing a tonic background inhibition on pyramidal cells.The IPSP of evoked hyperpolarization of long duration is followed by disfaciliration in addition to the disinhibitiom The dis]acilitation might be caused by an inhibition of excitatory interaeurons which are responsible for establishing a tonic background excitation on pyramidal cells. The long-duration hyperpolarization is followed by late/acilitation which can last up to 600 msee. Zusammen]assung. In Pyramidenzellen des sensomoterischen Cortex der Katze lassen sich zwei Arten reizbedingter Hyperpolarisation unterschiedlicher Dauer auslSsen. Beide beginnen mit einem inhibitorischen postsynaptischen Potential (IPSP), das bis zu 60 msec andauern kann. Es wird aus einzelnen IPSP-Stufen aufgebaut, die zeitlieh mit den Aktionspotentialen hochfrequent entladender Zwischenneurone iibereinstimmen kSnnen. * Unterstiitzt yon der Deutsehen Forschungsgemeinschaft (Vi 36/i--5).

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