Fourth cranial nerve palsy and brown syndrome: two interrelated congenital cranial dysinnervation disorders?

Based on neuroimaging data showing absence of the trochlear nerve, congenital superior oblique palsy is now classified as a congenital cranial dysinnervation disorder. A similar absence of the abducens nerve is accompanied by misinnervation to the lateral rectus muscle from a branch of oculomotor nerve in the Duane retraction syndrome. This similarity raises the question of whether some cases of Brown syndrome could arise from a similar synkinesis between the inferior and superior oblique muscles in the setting of congenital superior oblique palsy. This hypothesis has gained support from the confluence of evidence from a number of independent studies. Using Duane syndrome as a model, we critically review the accumulating evidence that some cases of Brown syndrome are ultimately attributable to dysgenesis of the trochlear nerve.

Audit report on Montgomery County, Iowa for the year ended June 30, 2012

Audit report on Montgomery County, Iowa for the year ended June 30, 2012

Audit report on Montgomery County, Iowa for the year ended June 30, 2002

Audit report on Montgomery County, Iowa for the year ended June 30, 2006

Audit report on Montgomery County, Iowa for the year ended June 30, 2005

Audit report on Montgomery County, Iowa for the year ended June 30, 2006

Audit report on Montgomery County, Iowa for the year ended June 30, 2004

Audit report on Montgomery County, Iowa for the year ended June 30, 2006

Clinal variation in a brown lemur (Eulemur spp.) hybrid zone: Combining morphological, genetic and climatic data to examine stability.

Studies of hybrid zones can inform our understanding of reproductive isolation and speciation. Two species of brown lemur (Eulemur rufifrons and E. cinereiceps) form an apparently stable hybrid zone in the Andringitra region of south-eastern Madagascar. The aim of this study was to identify factors that contribute to this stability. We sampled animals at 11 sites along a 90-km transect through the hybrid zone and examined variation in 26 microsatellites, the D-loop region of mitochondrial DNA, six pelage and nine morphological traits; we also included samples collected in more distant allopatric sites. Clines in these traits were noncoincident, and there was no increase in either inbreeding coefficients or linkage disequilibrium at the centre of the zone. These results could suggest that the hybrid zone is maintained by weak selection against hybrids, conforming to either the tension zone or geographical selection-gradient model. However, a closer examination of clines in pelage and microsatellites indicates that these clines are not sigmoid or stepped in shape but instead plateau at their centre. Sites within the hybrid zone also occur in a distinct habitat, characterized by greater seasonality in precipitation and lower seasonality in temperature. Together, these findings suggest that the hybrid zone may follow the bounded superiority model, with exogenous selection favouring hybrids within the transitional zone. These findings are noteworthy, as examples supporting the bounded superiority model are rare and may indicate a process of ecologically driven speciation without geographical isolation.

Fonctions psychologiques du religieux: Cent ans après "Varieties" de William James

La première traduction en français de « The Varieties of Religious Experience » fut publiée en 1906 et elle connut aussitôt un très grand retentissement. Dans cet ouvrage, William James affirme: « D'un point de vue tout psychologique, la religion est une fonction éternelle de l'esprit humain ». Toutefois, caractériser la religion par une fonction si fondamentale, sous-jacente à tous les systèmes de croyances, ne conduit pas James à porter un regard dévalorisant sur la multiplicité des formes religieuses. Au contraire, il y voit l'expression de la variété des combinaisons possibles du religieux avec la vie psychique sous ses différents aspects. Ce livre a pour but non seulement de relire William James un siècle après la publication de Varieties, mais aussi de préciser, sur la base des connaissances actuelles, quelles sont les fonctions psychologiques du religieux.