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  • Ivan Petrella, Emiliano Santoro, Aqib Aslam, Tiago Cavalcanti, Domenico Delli, Gatti +6 others
  • 2010
This paper deals with the implications of factor demand linkages for monetary policy design. We consider a general equilibrium model with two sectors that produce durable and non-durable goods, respectively. Part of the output of each sector serves as a production input in both sectors, in accordance with a realistic input-output structure. Strategic(More)
Plasticity in the adult mammalian brain can occur after damage to peripheral nerves and has also been described in the auditory system. Acoustic trauma, resulting in a loss of cochlear sensitivity, can lead to elevated levels of spontaneous activity, that is hyperactivity, in central nuclei such as the inferior colliculus. The current view is that this(More)
Hearing loss from acoustic trauma is a risk factor for tinnitus. Animal models using acoustic trauma have demonstrated hyperactivity in central auditory pathways, which has been suggested as a substrate for tinnitus. We used a guinea-pig model of unilateral acoustic trauma. Within the same animals, measurements of peripheral hearing loss, spontaneous(More)
1. Cerebral potentials evoked by random sequences of electrical stimuli to four fingers were recorded in intact man performing selective attention tasks. Eye movements and other artifacts were excluded from the averaged traces. Different finger stimuli were designated as targets to be mentally counted in alternate runs of each experiment. The high mean(More)
Rate-intensity functions at characteristic frequency (CF) were recorded from single fibres in the auditory nerve of anaesthetised guinea pigs. Within the same animal, CF rate-intensity functions, although probably forming a continuum, could be conveniently divided into three groups; (1) Saturating; reach maximum discharge rate within 30 dB of threshold, (2)(More)
Partial hearing loss is known to cause increased spontaneous activity at several stages of the central auditory pathways, and this phenomenon has been suggested as a possible neural substrate for tinnitus, a phantom hearing sensation. One recent study in guinea pig has suggested that approximately 6 weeks after acoustic trauma, the increased spontaneous(More)
Efferent neurones within the intraganglionic spiral bundle of the guinea pig cochlea were characterized in terms of their response properties, and their pattern of termination within the receptor organ revealed by intracellular labelling with horseradish peroxidase. All neurones subsequently identified as efferent neurones had clear features of their(More)
The inferior colliculus (IC) has been shown anatomically to make direct descending connections with medial olivocochlear (MOC) neurones in the auditory brainstem. The MOC neurones project to the outer hair cells in the cochlea and inhibit cochlear neural output. This study investigated the effect of IC stimulation on cochlear output in both guinea pigs and(More)
Projections from auditory brainstem nuclei to the cochlea and cochlear nuclei in the guinea pig were studied by injection of two retrograde fluorescent neuronal tracers. For seven experiments fast blue was injected into the scala tympani of one cochlea and diamidino yellow was injected into dorsal or anteroventral cochlear nucleus of the same side. The(More)
The emergence of hyperactivity in the form of elevated spontaneous firing rates after cochlear trauma has been well documented in a number of central auditory structures, including the auditory cortex, inferior colliculus, and dorsal subdivision of the cochlear nucleus. This hyperactivity is of interest as a possible neural substrate of tinnitus. Whether(More)