Concept

Optogénétique

Publications associées (79)

When does roving disrupt perceptual learning?

Michael Herzog, Elisa Tartaglia, Carl Kristoffer Aberg

Training with one type of a visual stimulus usually improves performance. When observers train with two or more stimulus types presented in random order (so-called roving), performance improves for certain stimulus types but not for others. To understand w ...

2008

Spatiotemporal dynamics of cortical sensorimotor integration in behaving mice

Carl Petersen, Rachel Aronoff

Tactile information is actively acquired and processed in the brain through concerted interactions between movement and sensation. Somatosensory input is often the result of self-generated movement during the active touch of objects, and conversely, sensor ...

2007

Cellular mechanisms regulating adult neurogenesis and olfactory perception in mice

Maria del Carmen Sandi Perez, Thomas Brionne

In the adult mammalian brain, neural stem cells persist in the subventricular zone and the hippocampus, producing new functional neurons throughout life. Whether and how adult neurogenesis maintains brain function remains highly debated. This question is o ...

EPFL2007

Short-term-plasticity orchestrates the response of pyramidal cells and interneurons to population bursts

Wulfram Gerstner, Henry Markram, Gilad Silberberg

The synaptic drive from neuronal populations varies considerably over short time scales. Such changes in the presynaptic rate trigger many temporal processes absent under steady-state conditions. This paper examines the differential impact of pyramidal cel ...

2005

Transient information flow in a network of excitatory and inhibitory model neurons: role of noise and signal autocorrelation

Wulfram Gerstner, Julien Mayor

We investigate the performance of sparsely-connected networks of integrate-and-fire neurons for ultra-short term information processing. We exploit the fact that the population activity of networks with balanced excitation and inhibition can switch from an ...

2004

Ultrafast studies of electron injection in Ru dye sensitized SnO2 nanocrystalline thin film

Ulf Anders Hagfeldt, Christophe Bauer

The electron injection rate of bis(Bu4N) cis di(thiocyanato) bis (2,2'-bypiridine-4,4' carboxylic acid)Ruthenium (II) dye (N719) into SnO2 nanocryst. thin films was measured with 2-color femtosecond transient absorption spectroscopy. The electron injection ...

2002

Synchrony generation in recurrent networks with frequency-dependent synapses

Henry Markram

Throughout the neocortex, groups of neurons have been found to fire synchronously on the time scale of several milliseconds. This near coincident firing of neurons could coordinate the multifaceted information of different features of a stimulus. The mecha ...

2000

Laser induced photocurrent transients and capacitance measurements on nanocrystalline TiO2 electrodes

Ulf Anders Hagfeldt

The laser induced photocurrent transient and capacitance measurements were used to study the charge carrier sepn. and charge transport in single-crystal porous TiO2 electrodes. The fast photocurrent component was due to the transport of free electrons thro ...

1995

Different patterns of receptor-activated cytoplasmic Ca2+ oscillations in single pancreatic acinar cells: dependence on receptor type, agonist concentration and intracellular Ca2+ buffering

Carl Petersen

Agonist-specific cytosolic Ca2+ oscillation patterns can be observed in individual cells and these have been explained by the co-existence of separate oscillatory mechanisms. In pancreatic acinar cells activation of muscarinic receptors typically evokes si ...

1991

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