Sentences with phrase «during magnetic orientation»

Due to the fact that a known visual pathway connects the only brain structures that have been shown to be active during magnetic orientation, our findings strongly support the hypothesis that migratory birds perceive the magnetic field as a visual pattern and that they are thus likely to «see» the magnetic field.

Not exact matches

By combining neuronal tracing with behavioral experiments leading to sensory - driven gene expression of the neuronal activity marker ZENK during magnetic compass orientation, we demonstrate a functional neuronal connection between the retinal neurons and Cluster N via the visual thalamus.

We furthermore suggested that Cluster N is likely to process such light - mediated magnetic compass responses, based on the fact that Cluster N is the only known forebrain area that is highly active during magnetic compass orientation, and on the theoretical model [7] on magnetic field modulation of the light sensitivity of specialized receptor molecules in the retina of the birds, [for detailed arguments see 13], [14].

Thus, the identification of what sensory system (s) is active during magnetic compass orientation, provides a way to recognize the sensory quality utilized during that specific behavior.

Thus, the two areas of the central nervous system being most active during magnetic compass orientation are part of an ascending visual processing stream, the thalamofugal pathway.

Citation: Heyers D, Manns M, Luksch H, Güntürkün O, Mouritsen H (2007) A Visual Pathway Links Brain Structures Active during Magnetic Compass Orientation in Migratory Birds.

Furthermore, movement - independent ZENK expression in the forebrain of night - migratory birds performing magnetic orientation at night is confined to Cluster N [with the strongest activation in distinct subregions (the shell surrounding the DNH nucleus)-RSB-, as shown by the detailed quantification of ZENK expression within Cluster N performed in this study], and this expression massively decreased in corresponding brain areas of non-migratory songbirds and in all bird species during daytime [13].