Rapid interactions between the ventral visual stream and emotion-related structures rely on a two-pathway architecture. - Archive ouverte HAL Access content directly
Journal Articles Journal of Neuroscience Year : 2008

Rapid interactions between the ventral visual stream and emotion-related structures rely on a two-pathway architecture.

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Abstract

Visual attention can be driven by the affective significance of visual stimuli before full-fledged processing of the stimuli. Two kinds of models have been proposed to explain this phenomenon: models involving sequential processing along the ventral visual stream, with secondary feedback from emotion-related structures ("two-stage models"); and models including additional short-cut pathways directly reaching the emotion-related structures ("two-pathway models"). We tested which type of model would best predict real magnetoencephalographic responses in subjects presented with arousing visual stimuli, using realistic models of large-scale cerebral architecture and neural biophysics. The results strongly support a "two-pathway" hypothesis. Both standard models including the retinotectal pathway and nonstandard models including cortical-cortical long-range fasciculi appear plausible.
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inserm-00381361 , version 1 (21-05-2009)

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David Rudrauf, Olivier David, Jean-Philippe Lachaux, Christopher K. Kovach, Jacques Martinerie, et al.. Rapid interactions between the ventral visual stream and emotion-related structures rely on a two-pathway architecture.. Journal of Neuroscience, 2008, 28 (11), pp.2793-803. ⟨10.1523/JNEUROSCI.3476-07.2008⟩. ⟨inserm-00381361⟩
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