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  • 1
    Electronic Resource
    Electronic Resource
    The responsiveness of acoustic area after stimulation of the caudate nucleus (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 259-260 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto La stimolazione ad alta frequenza e di breve durata del nucleo caudato determina inibizione dei potenziali evocati nell'area uditiva primaria e secondarie sia in animali preparati acutamente sia in animali portatori di elettrodi a dimora.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01900081
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  • 2
    Electronic Resource
    Electronic Resource
    A feature of caudate control of focal hippocampal epilepsy: evidence for an anterograde pathway (1991)
    Springer
    Experimental brain research 85 (1991), S. 240-242 
    Details
    ISSN: 1432-1106
    Keywords: Caudate nucleus ; Accumbens ; Hippocampal epilepsy ; Inhibition ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Previous experimental evidences showed that the caudate nucleus has a modulatory effect on hippocampal epilepsy. The caudate's regulating action might reach the hippocampus either via the septal region or, retrogradely, via the accumbens nucleus. In order to obtain new data about the pathway involved in caudate hippocampal influence the spreading of abnormal activity towards the nucleus accumbens was studied. Furthermore the effects of caudate stimulation in animals with electrolytic lesions of the nucleus accumbens were analyzed. It was observed that abnormal penicillin-induced activity spreaded from the hippocampus to the nucleus accumbens in about 30 minutes. In animals with and without lesions of nucleus accumbens, caudate stimulation brought about a significant decrease in the frequency and amplitude of hippocampal activity. The results suggest that the nucleus accumbens is reached by the spreading of hippocampal epilepsy but does not participate in the control exerted by the caudate nucleus on the hippocampus. Thus the caudate-induced inhibition takes place through an anterograde caudate-hippocampal circuit, while at the same time excluding retrograde activation by way of a caudate-accumbens-hippocampal pathway.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00230007
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Evidence of a contralateral motor influence on reciprocal inhibition in man (1992)
    Springer
    Journal of neural transmission 4 (1992), S. 257-266 
    Details
    ISSN: 1435-1463
    Keywords: H reflex ; reciprocal inhibition ; contralateral movement ; cutaneous stimulation ; IA interneurone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The role of contralateral movement on both H reflex and reciprocal inhibition was studied. In normal men H reflex was induced by median nerve stimulation. Reciprocal inhibition was achieved through stimulation of the antagonist radial nerve. On this basis the effects of contralateral arm movement were analized. Furthermore the putative influence of exteroceptive origin was also verified by means of digit stimulation. Results showed that contralateral arm movement did not affect H reflex amplitude; on the contrary, it was able to enhance reciprocal inhibition induced by extensors on flexors. Study of cutaneous afferents demonstrated that contralateral digit stimulation failed to elicit modifications on both H reflex and reciprocal inhibition. On the other hand, ipsilateral digit stimulation lowered H reflex amplitude and increased the degree of reciprocal inhibition. Experimental findings underline the possibility that an informational array reaches the contralateral IA interneurone: therefore a mutual (bilateral) interaction among IA interneurones may accordingly be hypothesised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02260074
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  • 4
    Electronic Resource
    Electronic Resource
    Cortical stimulation and reflex excitability of spinal cord neurones in man (1995)
    Springer
    Journal of neural transmission 101 (1995), S. 159-168 
    Details
    ISSN: 1435-1463
    Keywords: Transcranial electrical stimulation ; transcranial magnetic stimulation ; H reflex ; reciprocal inhibition ; motor control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The H reflex technique was used to evaluate the influence exerted by cortical conditioning on the excitability of the alpha-motoneurone pool and on IA interneuronal activity (reciprocal inhibition). In ten subjects at absolute rest electrical and magnetic stimulation of the motor cortex was transcranially applied during flexor carpi radialis H reflex eliciting and in conditions of reciprocal inhibition induced by radial nerve stimulation. The time courses showed that at intensities below motor threshold, electrical brain conditioning induced an increase in the amplitude of the test reflex when the cortical shock was given 4 ms after the test H reflex. On the contrary, reciprocal inhibition was reduced by electrical cortical conditioning when the scalp stimulation was applied 2–3 ms after the test stimulus. Magnetic transcranial stimulation induced an increase of H reflex amplitude when the test shock was administered 5 and 2 ms prior to the scalp shock; it did not modify the degree of reciprocal inhibition. The experimental findings could be considered the electrophysiological manifestation of a differential cortico-spinal control on the pathway alpha-motoneurone/IA interneurone. Considerations on the delay allow the hypothesis of a further synapse between the cortico-spinal ending and the IA interneurone. Discrepancies with magnetic conditioning might be ascribed to a preferential transynaptic action of magnetic mode of neural activation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01271553
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  • 5
    Electronic Resource
    Electronic Resource
    Lateral habenula and hippocampus: A complex interaction raphe cells-mediated (1997)
    Springer
    Journal of neural transmission 104 (1997), S. 615-631 
    Details
    ISSN: 1435-1463
    Keywords: Hippocampus ; lateral habenula ; dorsal raphe nucleus ; iontophoresis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The study has shown an excitatory influence exerted by lateral habenula (LH) on hippocampal pyramidal cells. The modulatory influence is paradoxically serotonine-mediated; in fact all LH stimulation effects were abolished by intrahippocampal iontophoretic methysergide application. The data suggest the involvement of dorsal raphe nucleus. In fact, the dorsal raphe nucleus stimulation caused on hippocampus an expected inhibitory effect antagonized by intrahippocampal iontophoretic methysergide application. In the context of this neural structure we have highlighted a disinhibitory relation between two types of cells: slow serotonergic efferent neurones and fast GABAergic interneurones. The disinhibitory hypothesis is also supported by the following experimental tests performed on both slow and fast raphe cells: a) LH stimulation at low and high frequencies; b) iontophoretic administration of NMDA and GABA; c) LH stimulation during intraraphe iontophoretic injection of 2-APV (NMDA antagonist) and bicuculline (GABA antagonist).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291880
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  • 6
    Electronic Resource
    Electronic Resource
    The control of acoustic input in the medial geniculate body and inferior colliculus by auditory cortex (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 55-56 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto In Gatti curarizzati la stimolazione condizionante dell'area uditiva primaria inibisce i potenziali evocati tanto nel corpo genicolato mediale quanto nel collicolo inferiore. I risultati possono attribuire un significato funzionale alle fibre che dalla corteccia uditiva convergono sui due relays del sistema sensoriale acustico.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01900389
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  • 7
    Electronic Resource
    Electronic Resource
    The control of amygdaloid seizures by the globus pallidus (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 166-167 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Both in acute and chronic cats entopeduncular stimulation inhibits, to a greater extent than caudate activation, focal paroxysmal activity in the ventro-basal complex of the amygdala. Lesion of entopeduncular neurons, by means of kainic acid injection, induces a decrease of the caudate inhibitory effect. It is suggested that neostriatal control of the amygdaloid seizures occurs partly through the globus pallidus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01963210
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  • 8
    Electronic Resource
    Electronic Resource
    The control of amygdaloid and temporal paroxysmal activity by the caudate nucleus (1971)
    Springer
    Cellular and molecular life sciences 27 (1971), S. 278-279 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto In gatti curarizzati ed in gatti portatori di elettrodi a dimora e liberi di muoversi, la stimolazione ripetitiva ad alta frequenza del nucleo caudato inibisce la comparsa sia dei fenomeni bioelettrici parossistici focalizzati nell'amigdala e nella corteccia temporale sia dei fenomeni comportamentali omologabili all'epilessia psicomotoria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02138145
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  • 9
    Electronic Resource
    Electronic Resource
    Bilateral reciprocal organisation in man: focus on IA interneurone (1994)
    Springer
    Journal of neural transmission 96 (1994), S. 31-39 
    Details
    ISSN: 1435-1463
    Keywords: H reflex ; reciprocal inhibition ; IA interneurone ; upper limb
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The H reflex of flexor carpi radialis and radial-induced reciprocal inhibition were recorded in normal subjects during conditioning stimulation of the contralateral median or radial nerves. It was found that stimulation of the contralateral median nerve enhanced the degree of reciprocal inhibition exerted by the radial nerve on the median nerve, while contralateral radial nerve stimulation reduced the reciprocal inhibition exerted by the extensor on the flexor. In two subjects in which a pure extensor H reflex was recorded specular features were observed following contralateral median and radial stimulation. These findings are considered to be the electrophysiological manifestation of contralateral modulation of reciprocal inhibition, which is likely to act at the level of the IA interneurone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01277926
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