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Objective: To assess the repeatability and suitability for multicentre studies of MScanFit motor unit number estimation (MUNE), which involves modelling compound muscle action potential (CMAP) scans. Methods: Fifteen groups in 9 countries recorded CMAP scans twice, 1–2 weeks apart in healthy subjects from abductor pollicis brevis (APB), abductor digiti minimi (ADM) and tibialis anterior (TA) muscles. The original MScanFit program (MScanFit-1) was compared with a revised version (MScanFit-2), designed to accommodate different muscles and recording conditions by setting the minimal motor unit size as a function of maximum CMAP. Results: Complete sets of 6 recordings were obtained from 148 subjects. CMAP amplitudes differed significantly between centres for all muscles, and the same was true for MScanFit-1 MUNE. With MScanFit-2, MUNE differed less between centres but remained significantly different for APB. Coefficients of variation between repeats were 18.0% for ADM, 16.8% for APB, and 12.1% for TA. Conclusions: It is recommended for multicentre studies to use MScanFit-2 for analysis. TA provided the least variable MUNE values between subjects and the most repeatable within subjects. Significance: MScanFit was primarily devised to model the discontinuities in CMAP scans in patients and is less suitable for healthy subjects with smooth scans.

[ES] En este artículo ofrecemos una interpretación preliminar de los resultados analíticos de materia orgánica procedente de cerámica encontrada en once yacimientos en Galicia, en el noroeste de la Península Ibérica. Los yacimientos pertenecen a distintos períodos cronológicos, desde el Neolítico tardío hasta el período galaico-romano. Empezamos con una breve presentación de los contextos, luego un resumen de los materiales cerámicos y finalmente presentamos los resultados del análisis. Las cerámicas fueron estudiadas aplicando el concepto teórico y metodológico de "Cadena Tecnológica Operativa" (Cobas y Prieto 2003). Esta es la primera vez que un proyecto de investigación de este tipo y alcance has sido puesto en práctica en Galicia., [EN] In this article we offer a preliminary interpretation of analytical results of organic material taken from pottery found in eleven sites in Galicia, in the northwestern Iberian Peninsula. The sites are from different chronological periods, ranging from the Late Neolithic until the Galaico-Roman period. We start with a short presentation of the contexts, then a summary of the ceramic materials, and finally present the results of the analyses. The ceramics were studied applying the theoretical and methodological concept of the "Technological Operative Chain" (Cobas and Prieto 2003). This is the first time that an investigation project of this type and scope has been carried out in Galicia.