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In: In Bildern denken?

Previous functional magnetic resonance imaging (MRI) found various brain areas in the temporal and occipital lobe involved in integrating auditory and visual object information. Fiber tracking based on diffusion-weighted MRI suggested neuroanatomical connections between auditory cortex and sub-regions of the temporal and occipital lobe. However, the relationship between functional activity and white-matter tracks remained unclear. Here, we combined probabilistic tracking and functional MRI in order to reveal the structural connections related to auditory–visual object perception. Ten healthy people were examined by diffusion-weighted and functional MRI. During functional examinations they viewed either movies of lip or body movements, listened to corresponding sounds (phonological sounds or body action sounds), or a combination of both. We found that phonological sounds elicited stronger activity in the lateral superior temporal gyrus (STG) than body action sounds. Body movements elicited stronger activity in the lateral occipital cortex than lip movements. Functional activity in the phonological STG region and the lateral occipital body area were mutually modulated (sub-additive) by combined auditory–visual stimulation. Moreover, bimodal stimuli engaged a region in the posterior superior temporal sulcus (STS). Probabilistic tracking revealed white-matter tracks between the auditory cortex and sub-regions of the STS (anterior and posterior) and occipital cortex. The posterior STS region was also found to be relevant for auditory–visual object perception. The anterior STS region showed connections to the phonological STG area and to the lateral occipital body area. Our findings suggest that multisensory networks in the temporal lobe are best revealed by combining functional and structural measures.

In: Seeing and Perceiving

Recent advances in understanding the neurobiological underpinnings of visual–vestibular interactions underlying self-motion perception are reviewed with an emphasis on comparisons between the macaque and human brains. In both species, several distinct cortical regions have been identified that are active during both visual and vestibular stimulation and in some of these there is clear evidence for sensory integration. Several possible cross-species homologies between cortical regions are identified. A key feature of cortical organization is that the same information is apparently represented in multiple, anatomically diverse cortical regions, suggesting that information about self-motion is used for different purposes in different brain regions.

Open Access
In: Multisensory Research

Self motion perception involves the integration of visual, vestibular, somatosensory and motor signals. This article reviews the findings from single unit electrophysiology, functional and structural magnetic resonance imaging and psychophysics to present an update on how the human and non-human primate brain integrates multisensory information to estimate one’s position and motion in space. The results indicate that there is a network of regions in the non-human primate and human brain that processes self motion cues from the different sense modalities.

In: Multisensory Research
Kognitive Potentiale von Visualisierung in Kunst und Wissenschaft
'Ein Bild sagt mehr als tausend Worte?' Worin gründet diese besondere 'Sagkraft' der Bilder, wie sind epistemische Gehalte von Bildern denkbar, die sich einer sprachlichen Vermittlung entziehen, ja: ein genuin bildliches, nicht-sprachliches Erkenntnispotential für sich einfordern? Mit Beiträgen von Reinhard Brandt (Marburg), Gottfried Gabriel (Jena), Marc Greenlee (Regensburg), Norbert Hosten (Greifswald), Oliver Jehle (Regensburg), Max J. Kobbert (Münster), Ulrich Nortmann (Saarbrücken), Alessandro Nova (Florenz), Regine Prange (Frankfurt am Main), Peter J. Schneemann (Bern), Oliver R. Scholz (Münster), Peter Schreiber (Stralsund), Peter Springer (Oldenburg), Jakob Steinbrenner (München), Christoph Wagner (Regensburg) und Michael F. Zimmermann (Eichstätt).