Two studies conducted at the Grenoble Institute of Neuroscience as part of Clarissa Baratin’s PhD research and published in Nature Communications show that our brain does not rely on exactly the same neural circuits to evaluate pleasant and unpleasant experiences, and that its activity immediately before a decision can influence our choices.
Doubting what we have seen, what we have done, or a decision we have just made: doubt is a prominent feature of obsessive-compulsive disorder (OCD). A study conducted at the Grenoble Institute of Neuroscience suggests that this doubt may not result from poorer visual perception, but could instead be linked to altered metacognition, the ability to evaluate one’s own perceptions.
A study conducted at the Grenoble Institute of Neuroscience shows, in a progressive macaque model of Parkinson’s disease, that activity in the subthalamic nucleus changes before the onset of motivational, cognitive and then motor impairments. These findings could pave the way for deep brain stimulation strategies better tailored to each patient’s symptoms.
In preclinical research on alcohol addiction, rats are often housed alone. A team from the Grenoble Institute of Neurosciences investigated whether they could be housed in pairs without compromising the validity of the experimental model. Their findings reveal a more complex picture than might be expected.
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- Closed-loop readout of anterior insula high-gamma activity steers value-based decisions
Clarissa Baratin, Mathias Pessiglione, Philippe Kahane, Alexis Robin, Lorella Minotti, Guillaume Jean-Paul Claude Becq & Julien Bastin
Nature Communications, publié le 4 juillet 2026. - Complementary and opponent value signals in the human brain support choosing the best and avoiding the worst
Clarissa Baratin, Alizée Lopez-Persem, Philippe Kahane, Lorella Minotti, Jiri Hammer, Petr Marusič, Anca Nica, Sylvain Rheims, Louis Maillard, Marie Denuelle, Emmanuel Barbeau, Blandine Chanteloup-Forêt, Mathias Pessiglione, Guillaume Becq & Julien Bastin
Nat Commun 17, 9760 (2026). - Assessing the effect of subthalamic stimulation on metaperception in obsessive-compulsive disorder
Audrey Kist, Michael Pereira, Ramla Msheik, Dorian Goueytes, Arnaud Pouchon, Stephan Chabardès, Julien Bastin, Mircea Polosan & Nathan Faivre
Transl Psychiatry (2026). doi.org/10.1038/s41398-026-04423-6 - Behavioral changes preceded by subthalamic nucleus activity alterations in a progressive macaque model of Parkinson’s disease
Mathilde Bertrand, Stephan Chabardes, Jessy Hugues Dit Ciles, Nicolas De Leiris, Julien Bastin & Brigitte Piallat
npj Parkinsons Dis. (2026). doi.org/10.1038/s41531-026-01498-2 - Impact of paired-housing on a preclinical model of alcohol use disorder
Cécile Gaudart, Mylène Wilt, Fanny Joly, Raphaël Goutaudier, Colin Deransart, Yvan M. Vachez, Sebastien Carnicella
Drug and Alcohol Dependence, Volume 287, 2026. doi.org/10.1016/j.drugalcdep.2026.113289. - Kinetochore proteins control microtubule dynamics in postmitotic neurons to regulate the formation of dendritic spines
Zhao G, Sharma A, Tang J, Aleman M, Liang X, Miner L, Qi J, Xiang W, Tian F, Goldberg Y, He Z, Shen K, Peris L, L Schwarz T.
Proc Natl Acad Sci U S A. 2026 May 5;123(18):e2520684123. doi: 10.1073/pnas.2520684123. - Ultrasound-assisted gene therapy mitigates Leigh syndrome pathology
Mathilde Faideau, Romain Clément, Sébastien Rigollet, Giorgia Benegiamo, Cassandra Cresson, Béatrice Blot, Robin Reynaud-Dulaurier, Sara Yjjou, Fanny Aprahamian, Sylvère Durand, Anthony Delalande, Emmanuel L Barbier, Vasile Stupar, Johan Auwerx, Michael Decressac
Brain,2026 Jan 23. doi: 10.1093/brain/awag026. - A frugal Spiking Neural Network for unsupervised multivariate temporal pattern classification and multichannel spike sorting
Sai Deepesh Pokala, Marie Bernert, Takuya Nanami, Takashi Kohno, Timothée Lévi & Blaise Yvert
Nature Communications vol. 16, Article number: 9218 (2025) - Synchrotron-generated microbeams as a radiosurgical alternative for drug-resistant epilepsies: Proof of concept in a mouse model of mesiotemporal lobe epilepsy
Loan Samalens, Camille Beets, Clothilde Courivaud, Sarvenaz Keshmiri, Jean-François Adam, Paolo Pellicioli, Emmanuel Luc Barbier, Raphaël Serduc, Antoine Depaulis
Epilepsia. 2025 Dec 23. doi: 10.1002/epi.70063. Online ahead of print - L-Dopa-modified microtubules lead to synapse instability in cultured neurons: possible implications in Parkinson’s disease therapy
Agustina Zorgniotti, Aditi Sharma, Sacnicte Ramirez-Rios, Chadni Sanyal, Martina Aleman, Yanina Ditamo, Marie-Jo Moutin, C. Gastón Bisig, Leticia Peris
J npj Parkinsons Dis. 11, 298 (2025). doi.org/10.1038/s41531-025-01143-4 - Event-related potential alterations in bipolar disorder subtypes and mood states: Insights from an emotional visual task
Ronen Sosnik, Antoine Bertrand, Muli Linder, Mircea Polosan
J Affect Disord. 2025 Dec 15;391:119970. doi: 10.1016/j.jad.2025.119970. Epub 2025 Jul 23. PMID: 40712679. - Cortical evidence accumulation for visual perception occurs irrespective of reports
François Stockart, Ramla Msheik, Alexis Robin, Lenka Jurkovičová, Dorian Goueytes, Martin Rouy, Radek Mareček, Dominique Hoffmann, Liad Mudrik, Robert Roman, Milan Brázdil, Lorella Minotti, Philippe Kahane, Michael Pereira*, Nathan Faivre*.
Nat Commun. 2025 Sep 26;16(1):8458. doi: 10.1038/s41467-025-63255-y.* contribution égale. - Magnetic resonance-guided ultrasound thalamotomy for essential tremor: a review.
De Schlichting E, Meng Y, Huang Y, Jones RM, Hynynen K, Hamani C, Abrahao A, Davidson B, Lipsman N.
Expert Rev Med Devices. 2025 Jul 11:1-9. doi: 10.1080/17434440.2025.2530765. - Characterizing early auditory deficits in schizophrenia using drift-diffusion modeling.
Dondé C, Pereira M, Nalborczyk L, Roux P, Faivre N, Brunelin J.
Schizophr Res. 2025 Jul 29;284:23-31. doi: 10.1016/j.schres.2025.07.024. - Impaired effort allocation in schizophrenia
Blouzard E, Cignetti F, Meyniel F, Pouchon A, Polosan M, Bastin J, Dondé C.
Schizophr Res Cogn. 2025 Jul 15;42:100378. doi: 10.1016/j.scog.2025.100378. eCollection 2025 Dec. PMID: 40697646 Free PMC article. - Astrocytes functionally integrate multiple synapses via specialized leaflet domains.
Lucas Benoit, Ines Hristovska, Nicolas Liaudet, Pierre-Henri Jouneau, Arnold Fertin, Roberta de Ceglia, David Litvin, Maria Amalia Di Castro, Milica Jevtic, Ioannis Zalachoras, Toko Kikuchi, Ludovic Telley, Matteo Bergami, Yves Usson, Chihiro Hisatsune, Katsuhiko Mikoshiba, Karin Pernet-Gallay, Andrea Volterra
Cell, published online September 24, 2025 DOI 10.1016/j.cell.2025.08.036