Alberto BACCI
DR CNRS & Team Leader
DR CNRS & Team Leader
Joana LOURENÇO
PhD, CR Inserm
Principal investigator, PhD, CR, INSERM
In the neocortex, sensory perception is achieved by a two-way communication between primary and associative cortices and is controlled by a rich diversity of GABAergic interneurons. In particular, perisomatic-targeting basket cells (BCs) form inhibitory synapses near the soma of the principal neurons (PNs). Plasticity of perisomatic inhibition mediated by parvalbumin (PV) interneurons can efficiently modulate the firing of PNs (Lourenço et al., 2014; 2020). Perisomatic inhibition, however, is not solely provided by PV interneurons but also by cholecystokinin (CCK)-expressing interneurons, which also express high levels of cannabinoid receptor type 1 (CB1). Yet, the function of this cell type within cortical circuits is elusive. Whether and how inhibition arising from CB1 basket cells can shape sensory information processing is a question that we are trying to tackle using a multidisciplinary approach. Understanding how different sources of perisomatic inhibition along with different neuromodulators shape PNs activity in vivo is at the center of my scientific interests.
Kathleen CHO
PhD, CR Inserm
Andrea AGUIRRE
Lab Manager, Ingénieure d’études
Lab manager
Ignat LAPATO-ZAHORSKI
Ingénieur d’études
Angela Michela DE STASI
PostDoc, PhD
Postdoctorant, PhD
Nina SOTO
PhD student
PhD candidate
Adrianna NOZOWNIK
PhD student
PhD student
During my Masters in Biology, obtained in 2021 from University of Hamburg in Germany, I worked in Simon Wiegert’s lab. Since May 2022 I moved not only from Hamburg to Paris, but also from characterizing inhibitory optogenetic tools to characterizing inhibitory interneurons in Alberto Bacci’s lab. The idea behind the project is to understand better the integration of contextual information with visual information which is a process to create perception. For this, I investigate the properties of cortical Layer 1 interneurons that express the Cannabinoid receptor Type-1 and the associated plasticity and microcircuit to assess their putative role in gating inputs onto pyramidal cells of the primary visual cortex. Using in vitro electrophysiology, in vivo two-photon imaging and recording of spontaneous behaviors, I aim to characterize this CB1 positive population within the diverse types of Layer 1 interneurons and their contribution to primary visual cortex activity during the perception of visual inputs.
Faezeh RABBANI
Ingénieure d’études
Ingenieur d’études
I studied Cellular Molecular Biology at the University of Tehran, Iran. After joining Rodent Electrophysiology Laboratory at the Institute for Research In Fundamental Sciences (IPM) as a research assistant, I decided to study for My master's in Computational Neuroscience. To this aim, I joined the CNN master's program at Paris Saclay university. I did my master's project on Cortical mechanisms of sensorimotor learning using a deep-learning framework on the electrophysiology data from a closed-loop BMI setup at the NeuroPSI institute under the supervision of Valerie ego Stengel. Now, I am currently a data engineer in Alberto Bacci's team at the Paris Brain Institute.
Killian ABRASSART
PhD student
PhD Student
I earned my Master's degree in Biology with a specialization in Cellular and Integrative Neuroscience in 2023 from Sorbonne University in Paris. During this period, I worked with Véronique Marchand-Pauvert to identify a biomarker related to Amyotrophic Lateral Sclerosis (ALS). This experience motivated me to transition from pre-clinical to more fundamental research. As part of my Ph.D. program, I am investigating how the endogenous presence or absence of perineuronal nets (PNN) expression around parvalbumin-positive (PV) cells in two adjacent visual cortical regions, V1 and V2m, can confer distinct electrophysiological properties. My research project will involve ex-vivo electrophysiological recordings with electrical and optogenetic thalamocortical stimulations, immunohistochemistry, and in-vivo recording.
Nathan MALLET
PhD student
PhD student
I studied in the Biology Department at ENS Paris-Saclay from 2019 to 2023. In 2022, I obtained my master's degree at Sorbonne in Integrative Biology and Physiology with a focus on neuroscience. For my master's internship, I worked in Rebecca Piskorowski's and Vivien Chevaleyre's lab, using slice electrophysiology to study synaptic plasticity in area CA2 of the hippocampus. With the goal of expanding my skills in the in vivo field, I then joined the Sabatini lab at Harvard Medical School, where I used fiber photometry to measure changes in dopamine release during adolescence in mice. In September 2023, I joined the Bacci lab as a PhD student. I study the role of a subpopulation of VIP interneurons expressing the Cannabinoid receptor Type 1 in the V1 cortex. This subpopulation could be crucial in generating spontaneous activity in this area, such as activity induced by locomotion or arousal. Combining my previous experiences with in vivo and in vitro techniques, my project involves ex vivo electrophysiology and in vivo calcium imaging.
Mai-An NGUYEN
Ingénieure d’études
Ingénieur d’études
Alejandro CARBALLOSA
PostDoc, PhD
PostDoc, PhD
Since February 2024, I am a postdoctoral researcher at the Laboratoire de Physique Théorique et Modélisation (LPTM) under the scientific supervision of prof. Alessandro Torcini in collaboration with prof. Alberto Bacci at Bacci’s Lab. My current research interest cover the development of nonlinear indicators to analyze the brain’s complexity, using for that purpose both experimental data-driven approaches and computational models of neural activity.
Killian ABRASSART
PhD student
PhD Student
I earned my Master's degree in Biology with a specialization in Cellular and Integrative Neuroscience in 2023 from Sorbonne University in Paris. During this period, I worked with Véronique Marchand-Pauvert to identify a biomarker related to Amyotrophic Lateral Sclerosis (ALS). This experience motivated me to transition from pre-clinical to more fundamental research. As part of my Ph.D. program, I am investigating how the endogenous presence or absence of perineuronal nets (PNN) expression around parvalbumin-positive (PV) cells in two adjacent visual cortical regions, V1 and V2m, can confer distinct electrophysiological properties. My research project will involve ex-vivo electrophysiological recordings with electrical and optogenetic thalamocortical stimulations, immunohistochemistry, and in-vivo recording.
Nathan MALLET
PhD student
PhD student
I studied in the Biology Department at ENS Paris-Saclay from 2019 to 2023. In 2022, I obtained my master's degree at Sorbonne in Integrative Biology and Physiology with a focus on neuroscience. For my master's internship, I worked in Rebecca Piskorowski's and Vivien Chevaleyre's lab, using slice electrophysiology to study synaptic plasticity in area CA2 of the hippocampus. With the goal of expanding my skills in the in vivo field, I then joined the Sabatini lab at Harvard Medical School, where I used fiber photometry to measure changes in dopamine release during adolescence in mice. In September 2023, I joined the Bacci lab as a PhD student. I study the role of a subpopulation of VIP interneurons expressing the Cannabinoid receptor Type 1 in the V1 cortex. This subpopulation could be crucial in generating spontaneous activity in this area, such as activity induced by locomotion or arousal. Combining my previous experiences with in vivo and in vitro techniques, my project involves ex vivo electrophysiology and in vivo calcium imaging.
Alberto BACCI
DR CNRS & Team Leader
DR CNRS & Team Leader
Joana LOURENÇO
PI, PhD, CR2, Inserm
Principal investigator, PhD, CR2, INSERM
Kathleen CHO
PI, PhD, CR1, Inserm
Laurence CATHALA
PI, PhD, MCU, Sorbonne Uni.
PI, PhD, MCU, Sorbonne Uni.
In the neocortex, sensory perception is achieved by a two-way communication between primary and associative cortices and is controlled by a rich diversity of GABAergic interneurons. In particular, perisomatic-targeting basket cells (BCs) form inhibitory synapses near the soma of the principal neurons (PNs). Plasticity of perisomatic inhibition mediated by parvalbumin (PV) interneurons can efficiently modulate the firing of PNs (Lourenço et al., 2014; 2020). Perisomatic inhibition, however, is not solely provided by PV interneurons but also by cholecystokinin (CCK)-expressing interneurons, which also express high levels of cannabinoid receptor type 1 (CB1). Yet, the function of this cell type within cortical circuits is elusive. Whether and how inhibition arising from CB1 basket cells can shape sensory information processing is a question that we are trying to tackle using a multidisciplinary approach. Understanding how different sources of perisomatic inhibition along with different neuromodulators shape PNs activity in vivo is at the center of my scientific interests.
Andrea AGUIRRE
Lab manager
Lab manager
Javier ZORRILLA DE SAN MARTIN
PostDoc, PhD
PostDoc, PhD
Trained in the biophysics of neuronal and synaptic physiology I study alterations of cortical neural circuits and their relationships with intellectual deficits in mouse models of Down syndrome.
Angela DE STASI
PostDoc, PhD
Postdoctorant, PhD
Fani KOUKOULI
PostDoc
PostDoc
Nina SOTO
PhD student
PhD candidate
Adrianna NOZOWNIK
PhD student
PhD student
During my Masters in Biology, obtained in 2021 from University of Hamburg in Germany, I worked in Simon Wiegert’s lab. Since May 2022 I moved not only from Hamburg to Paris, but also from characterizing inhibitory optogenetic tools to characterizing inhibitory interneurons in Alberto Bacci’s lab. The idea behind the project is to understand better the integration of contextual information with visual information which is a process to create perception. For this, I investigate the properties of cortical Layer 1 interneurons that express the Cannabinoid receptor Type-1 and the associated plasticity and microcircuit to assess their putative role in gating inputs onto pyramidal cells of the primary visual cortex. Using in vitro electrophysiology, in vivo two-photon imaging and recording of spontaneous behaviors, I aim to characterize this CB1 positive population within the diverse types of Layer 1 interneurons and their contribution to primary visual cortex activity during the perception of visual inputs.
Faezeh RABBANI
Ingénieur d’études
PostDoc
Permanent Researchers
Postdocs
Ph.D. students
Undergraduate students
Technical staff and engineers
Postdocs
Ph.D. students
Undergraduate students
Technical staff and engineers
● Postdoctoral fellow #1