Nous sommes un laboratoire de recherche publique situé à Paris spécialisé dans la psychophysique expérimentale et la psychologie développementale de la perception, de l´action, et du langage. Pour plus d’informations sur le LPP cliquez sur les liens à gauche.
Le LPP est une unité mixte Université Paris Descartes – CNRS – ENS. Pour le CNRS, nous sommes rattachés au département des sciences du vivant (section 27)
Notre rapport est disponible ici.
lun19Nov201811hSalle de réunion du LPP, H432, 4ème étage, Centre Biomédical des Saints Pères 45 rue des Sts Pères, 75006 Paris
From visceral inputs to first-person perspective: how the brain coordinates sensory and cognitive maps
Neural information is expressed in different frames of reference. For instance, gaze-centered, head-centered and limb-centered frames of references have to be coordinated for visually-guided action. Coordination is also required between the more abstract spaces of cognitive maps. Still, despite the multiplicity of frames of reference, conscious experience is characterized by a single, unified viewpoint - or first-person perspective. I present here a novel hypothesis to generate first-person perspective: multiple reference frames are coordinated by the neural monitoring of visceral inputs, that act as a unifying central point, internal to the organism. This hypothesis is backed up by experimental data on brain-viscera coupling in different paradigms tapping onto subjective perception and cognition.
lun26Nov201811hSalle de réunion du LPP, H432, 4ème étage, Centre Biomédical des Saints Pères 45 rue des Sts Pères, 75006 Paris
Applying the modulation theory to hearing
One of the most influential research programs in hearing sciences aims to apply the modulation theory to auditory perception. This theory, inspired by telecommunication sciences, relies on the following ‘core’ assumptions: (i) communication sounds including speech and animal vocalizations convey salient and slow temporal modulation cues; (ii) the auditory system of species using communication sounds has evolved to optimize its responses to these modulation cues; (iii) the transmission of information conveyed by communication signals is constrained by the ‘modulation transfer function’ (MTF) of the transmission path (a room, a hearing aid,...). We will show how the psychophysical and neurophysiological investigation of modulation perception by humans and by other species contributed to an in-depth understanding of the demodulation processes implemented in the peripheral and central auditory system. We will show how this work yielded models of modulation processing that account for a large range of listening situations including speech comprehension in quiet and in noise. Finally, we will show how his work contributed to a better understanding of the perceptual consequences of ageing and cochlear damage, and a better control of information transmission via rehabilitation systems.