251 research outputs found
Atlas de hongos comestibles y venenosos : 20 láminas en colores con 40 figuras y texto explicativo
No full text
Atlas de las aves de la fauna europea
No full textEn la cub.: Atlas de bolsillo.Contiene: Primera parte, 12 lám. col. con 79 figuras y texto explicativo -- Segunda parte, 12 lám. col. con 60 figuras y texto explicativ
Atlas de mamíferos
No full textEn la cub.: Atlas de bolsillo.Contiene: Primera parte, 11 lám. col. con 56 figuras y exto explicativo -- Segunda parte, 11 lám. col. con 47 figuras y exto explicativo -- Tercera parte, 10 lám. col. con 33 figuras y exto explicativ
Fieller versus Efron - a comparison of two asymptotic approaches to ICER interval estimation in the presence of neglegible correlation between cost and efficacy data
No full text
Interaction between the neuromagnetic responses to sound energy onset and pitch onset suggests common generators
No full textThe pitch-onset response (POR) is a negative component of the auditory evoked field which is elicited when the temporal fine structure of a continuous noise is regularized to produce a pitch perception without altering the gross spectral characteristics of the sound. Previously, we showed that the latency of the POR is inversely related to the pitch value and its amplitude is correlated with the salience of the pitch, suggesting that the underlying generators are part of a pitch-processing network [Krumbholz, K., Patterson, R.D., Seither-Preisler, A., Lammertmann, C. & Lütkenhöner, B. (2003) Cereb. Cortex,13, 765-772]. The source of the POR was located near the medial part of Heschl's gyrus. The present study was designed to determine whether the POR originates from the same generators as the energy-onset response (EOR) represented by the N100m/P200m complex. The EOR to the onset of a noise, and the POR to a subsequent transition from noise to pitch, were recorded as the time interval between the noise onset and the transition varied from 500 to 4000 ms. The mean amplitude of the POR increased by approximately 5.9 nA.m with each doubling of the time between noise onset and transition. This suggests an interaction between the POR and the EOR, which may be based on common neural generators
- …
