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Jovanovic L, Chassignolle M, Schmidt-Mutter C, Behr G, Coull JT, Giersch A. Dopamine precursor depletion affects performance and confidence judgements when events are timed from an explicit, but not an implicit onset. Sci Rep 2023; 13:21933. [PMID: 38081860 PMCID: PMC10713647 DOI: 10.1038/s41598-023-47843-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 11/19/2023] [Indexed: 12/18/2023] Open
Abstract
Dopamine affects processing of temporal information, but most previous work has tested its role in prospective tasks, where participants know in advance when the event to be timed starts. However, we are often exposed to events whose onset we do not know in advance. We can evaluate their duration after they have elapsed, but mechanisms underlying this ability are still elusive. Here we contrasted effects of acute phenylalanine and tyrosine depletion (APTD) on both forms of timing in healthy volunteers, in a within-subject, placebo-controlled design. Participants were presented with a disc moving around a circular path and asked to reproduce the duration of one full revolution and to judge their confidence in performance. The onset of the revolution was either known in advance (explicit onset) or revealed only at the end of the trial (implicit onset). We found that APTD shortened reproduced durations in the explicit onset task but had no effect on temporal performance in the implicit onset task. This dissociation is corroborated by effects of APTD on confidence judgements in the explicit task only. Our findings suggest that dopamine has a specific role in prospective encoding of temporal intervals, rather than the processing of temporal information in general.
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Affiliation(s)
- Ljubica Jovanovic
- Inserm 1114, Centre for Psychiatry, University Hospital of Strasbourg, Strasbourg University, Strasbourg, France.
- Laboratoire des Systèmes Perceptifs, École Normale Supérieure, PSL University & CNRS, Paris, France.
| | - Morgane Chassignolle
- Laboratoire des Neurosciences Cognitives (LNC), Aix-Marseille University & CNRS, Marseille, France
| | | | - Guillaume Behr
- Inserm 1114, Centre for Psychiatry, University Hospital of Strasbourg, Strasbourg University, Strasbourg, France
| | - Jennifer T Coull
- Laboratoire des Neurosciences Cognitives (LNC), Aix-Marseille University & CNRS, Marseille, France
| | - Anne Giersch
- Inserm 1114, Centre for Psychiatry, University Hospital of Strasbourg, Strasbourg University, Strasbourg, France.
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Ding K, Xu Q, Zhang X, Liu S. Metabolomic insights into neurological effects of BDE-47 exposure in the sea cucumber Apostichopus japonicus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 266:115558. [PMID: 37820477 DOI: 10.1016/j.ecoenv.2023.115558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/21/2023] [Accepted: 10/06/2023] [Indexed: 10/13/2023]
Abstract
The persistent organic pollutant 2,2',4,4'-Tetrabromodiphenyl ether (BDE-47), a prevalent congener among polybrominated diphenyl ethers (PBDEs), exhibits potent bioaccumulation and toxicity. Despite extensive research into the adverse effects of BDE-47, its neurotoxicity in sea cucumbers remains unexplored. Given the crucial role of the sea cucumber's nervous system in survival and adaptation, evaluating the impacts of BDE-47 is vital for sustainable aquaculture and consumption. In this study, we employed ultra-high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Triple-TOF-MS) to analyze metabolomic changes in neuro-related tissues of Apostichopus japonicus exposed to low (0.1 µg/L), medium (1.0 µg/L), and high (10.0 µg/L) BDE-47 concentrations. We identified significantly changed metabolites in each exposure group (87 in low, 79 in medium, and 102 in high), affecting a variety of physiological processes such as steroid hormone balance, nucleotide metabolism, energy metabolism, neurotransmitter levels, and neuroprotection. In addition, we identified concentration-dependent, common, and some other metabolic responses in the neuro-related tissues. Our findings reveal critical insights into the neurotoxic effects of BDE-47 in sea cucumbers and contribute to risk assessment related to BDE-47 exposure in the sea cucumber industry, paving the way for future neurotoxicological research in invertebrates.
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Affiliation(s)
- Kui Ding
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; Laboratory of Marine Ecology and Environmental Science, National Laboratory for Marine Science and Technology, Qingdao 266061, China; CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Qinzeng Xu
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; Laboratory of Marine Ecology and Environmental Science, National Laboratory for Marine Science and Technology, Qingdao 266061, China
| | - Xuelei Zhang
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; Laboratory of Marine Ecology and Environmental Science, National Laboratory for Marine Science and Technology, Qingdao 266061, China
| | - Shilin Liu
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
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Hinault T, D'Argembeau A, Bowler DM, La Corte V, Desaunay P, Provasi J, Platel H, Tran The J, Charretier L, Giersch A, Droit-Volet S. Time processing in neurological and psychiatric conditions. Neurosci Biobehav Rev 2023; 154:105430. [PMID: 37871780 DOI: 10.1016/j.neubiorev.2023.105430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/25/2023]
Abstract
A central question in understanding cognition and pathology-related cognitive changes is how we process time. However, time processing difficulties across several neurological and psychiatric conditions remain seldom investigated. The aim of this review is to develop a unifying taxonomy of time processing, and a neuropsychological perspective on temporal difficulties. Four main temporal judgments are discussed: duration processing, simultaneity and synchrony, passage of time, and mental time travel. We present an integrated theoretical framework of timing difficulties across psychiatric and neurological conditions based on selected patient populations. This framework provides new mechanistic insights on both (a) the processes involved in each temporal judgement, and (b) temporal difficulties across pathologies. By identifying underlying transdiagnostic time-processing mechanisms, this framework opens fruitful avenues for future research.
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Affiliation(s)
- Thomas Hinault
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14032 Caen, France.
| | - Arnaud D'Argembeau
- Psychology and Neuroscience of Cognition Research Unit, University of Liège, F.R.S-FNRS, 4000 Liège, Belgium
| | - Dermot M Bowler
- Autism Research Group, City, University of London, EC1V 0HB London, United Kingdom
| | - Valentina La Corte
- Laboratoire Mémoire, Cerveau et Cognition (MC2Lab), UR 7536, Université de Paris cité, 92774 Boulogne-Billancourt, France; Institut Universitaire de France, 75231 Paris, France
| | - Pierre Desaunay
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14032 Caen, France; Service de Psychiatrie de l'enfant et de l'adolescent, CHU de Caen, 14000 Caen, France
| | - Joelle Provasi
- CHArt laboratory (Human and Artificial Cognition), EPHE-PSL, 75014 Paris, France
| | - Hervé Platel
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14032 Caen, France
| | - Jessica Tran The
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14032 Caen, France
| | - Laura Charretier
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14032 Caen, France
| | - Anne Giersch
- Cognitive Neuropsychology and Pathophysiology of Schizophrenia Laboratory, National Institute of Health and Medical Research, University of Strasbourg, 67081 Strasbourg, France
| | - Sylvie Droit-Volet
- Université Clermont Auvergne, LAPSCO, CNRS, UMR 6024, 60032 Clermont-Ferrand, France
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Foerster FR, Chidharom M, Giersch A. Enhanced temporal resolution of vision in action video game players. Neuroimage 2023; 269:119906. [PMID: 36739103 DOI: 10.1016/j.neuroimage.2023.119906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 01/16/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
Video game play has been suggested to improve visual and attention processing. Nevertheless, while action video game play is highly dynamic, there is scarce research on how information is temporally discriminated at the millisecond level. This cross-sectional study investigates whether temporal discrimination at the millisecond level in vision varies across action video game players (VGPs; N = 23) and non-video game players (NVGPs; N = 23). Participants discriminated synchronous from asynchronous onsets of two visual targets in virtual reality, while their EEG and oculomotor movements were recorded. Results show an increased sensitivity to short asynchronies (11, 33 and 66 ms) in VGPs compared with NVGPs, which was especially marked at the start of the task, suggesting better temporal discrimination abilities. Pre-targets oculomotor freezing - the inhibition of small fixational saccades - was associated with correct temporal discrimination, probably revealing attentional preparation. However, this parameter did not differ between groups. EEG and reconstruction analyses suggest that the enhancement of temporal discrimination in VGPs during temporal discrimination is related to parieto-occipital processing, and a reduction of alpha-band (8-14 Hz) power and inter-trial phase coherence. Overall, the study reveals an enhanced ability in action video game players to discriminate in time visual events in close temporal proximity combined with reduced alpha-band oscillatory activities. Consequently, playing action video games is associated with an improved temporal resolution of vision.
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Affiliation(s)
- Francois R Foerster
- Université de Strasbourg, INSERM U1114, Pôle de Psychiatrie, Centre Hospitalier Régional Universitaire de Strasbourg, France.
| | - Matthieu Chidharom
- Department of Psychology, Lehigh University, Bethlehem, PA, United States
| | - Anne Giersch
- Université de Strasbourg, INSERM U1114, Pôle de Psychiatrie, Centre Hospitalier Régional Universitaire de Strasbourg, France
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Arrouet A, Polgári P, Giersch A, Joos E. Temporal Order Judgments in Schizophrenia and Bipolar Disorders – Explicit and Implicit Measures. TIMING & TIME PERCEPTION 2022. [DOI: 10.1163/22134468-bja10071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Abstract
Ordering events in time is essential for the understanding of causal relationships between successive events. Incorrect causal links can lead to false beliefs and an altered perception of reality. These symptoms belong to psychosis, which is present in schizophrenia (SZ) spectrum and bipolar (BP) disorder. Experimental results show that patients with SZ have an altered perception of temporal order, while there are no data in patients with BP. We investigated the ability of patients with SZ, BP, and controls to judge the order of stimuli with a 100-ms Stimulus Onset Asynchrony (SOA), and how such large asynchronies facilitate temporal order judgments for small asynchronies. Explicit temporal order effects suggest that patients with SZ perform worse at a long SOA (100 ms) as compared to controls, whereas patients with BP show no difference compared to controls or to patients with SZ. Implicit order effects reveal improved performances in case of identical as compared to different relative order between two successive trials for all groups, with no differences between the groups. We replicated explicit order impairments in patients with SZ compared to controls, while implicit effects appear to be preserved. This difficulty for patients to consciously order stimuli in time might be understood under the light of the loosening-of-associations phenomenon well described in SZ. Further, we showed that patients with BP do not reveal such an explicit order impairment which is consistent with phenomenological descriptions, suggesting a difference in time experience in patients with SZ and BP.
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Affiliation(s)
- Alana Arrouet
- INSERM U1114, Cognitive Neuropsychology and Pathophysiology of Schizophrenia, 1 place de l’Hôpital, 67091 Strasbourg Cedex, France
- CERVO Brain Research Centre, 2301 Av. D’Estimauville, Québec, QC G1E 1T2, Canada
| | - Patrik Polgári
- INSERM U1114, Cognitive Neuropsychology and Pathophysiology of Schizophrenia, 1 place de l’Hôpital, 67091 Strasbourg Cedex, France
| | - Anne Giersch
- INSERM U1114, Cognitive Neuropsychology and Pathophysiology of Schizophrenia, 1 place de l’Hôpital, 67091 Strasbourg Cedex, France
| | - Ellen Joos
- INSERM U1114, Cognitive Neuropsychology and Pathophysiology of Schizophrenia, 1 place de l’Hôpital, 67091 Strasbourg Cedex, France
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Blom JD, Nanuashvili N, Waters F. Time Distortions: A Systematic Review of Cases Characteristic of Alice in Wonderland Syndrome. Front Psychiatry 2021; 12:668633. [PMID: 34025485 PMCID: PMC8138562 DOI: 10.3389/fpsyt.2021.668633] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
Of the perceptual distortions characteristic of Alice in Wonderland syndrome, substantial alterations in the immediate experience of time are probably the least known and the most fascinating. We reviewed original case reports to examine the phenomenology and associated pathology of these time distortions in this syndrome. A systematic search in PubMed, Ovid Medline, and the historical literature yielded 59 publications that described 168 people experiencing time distortions, including 84 detailed individual case reports. We distinguished five different types of time distortion. The most common category comprises slow-motion and quick-motion phenomena. In 39% of all cases, time distortions were unimodal in nature, while in 61% there was additional involvement of the visual (49%), kinaesthetic (18%), and auditory modalities (14%). In all, 40% of all time distortions described were bimodal in nature and 19% trimodal, with 1% involving four modalities. Underlying neurological mechanisms are varied and may be triggered by intoxications, infectious diseases, metabolic disorders, CNS lesions, paroxysmal neurological disorders, and psychiatric disorders. Bizarre sensations of time alteration-such as time going backwards or moving in circles-were mostly associated with psychosis. Pathophysiologically, mainly occipital areas appear to be involved, although the temporal network is widely disseminated, with separate component timing mechanisms not always functioning synchronously, thus occasionally creating temporal mismatches within and across sensory modalities (desynchronization). Based on our findings, we propose a classification of time distortions and formulate implications for research and clinical practice.
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Affiliation(s)
- Jan Dirk Blom
- Outpatient Clinic for Uncommon Psychiatric Syndromes, Parnassia Psychiatric Institute, The Hague, Netherlands.,Faculty of Social Sciences, Leiden University, Leiden, Netherlands.,Department of Psychiatry, University of Groningen, Groningen, Netherlands
| | - Nutsa Nanuashvili
- Amsterdam Brain and Cognition Center, University of Amsterdam, Amsterdam, Netherlands
| | - Flavie Waters
- Clinical Research Centre, Graylands Hospital, North Metro Health Service Mental Health, Perth, WA, Australia.,School of Psychological Sciences, University of Western Australia, Perth, WA, Australia
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