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Varela V, Evdokimidis I, Potagas C. Binding objects to their spatiotemporal context: Age gradient and neuropsychological correlates of What-Where-When task performance. APPLIED NEUROPSYCHOLOGY. ADULT 2023; 30:214-226. [PMID: 34053387 DOI: 10.1080/23279095.2021.1924719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A number of recent studies have shown that the ability to accurately recall bound object and spatiotemporal aspects of an experienced event develops gradually in children and is greatly impaired in the elderly, reflecting developmental discontinuities in the integrity of the underlying medial temporal lobe network. Using a novel What-Where-When (WWW) visuospatial reconstruction task, the experiential memory performance of a group of healthy older adults (aged 60-80) was compared to that of a group of younger adults (aged 20-40). Both groups were equated on their general cognitive ability, their executive functioning, and on the presence of depression, anxiety, and stress symptomatology. As hypothesized, the performance of the older adults in the binding task was significantly lower, with younger participants recalling three times the amount of bound object and spatiotemporal triads than their older counterparts. Psychomotor speed was found to be lower in older adults and was the only neuropsychological index to significantly affect success on the WWW binding task. Based on this and other relevant studies, the selective associative memory impairment obtained using a non-verbal What-Where-When paradigm emerges as a marker for the detection of early pre-clinical signs of experiential memory pathology.
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Affiliation(s)
- Vasiliki Varela
- Eginition Hospital, Department of Neurology, School of Medicine, University of Athens, Athens, Greece
| | - Ioannis Evdokimidis
- Eginition Hospital, Department of Neurology, School of Medicine, University of Athens, Athens, Greece
| | - Constantin Potagas
- Eginition Hospital, Department of Neurology, School of Medicine, University of Athens, Athens, Greece
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Cannabidiol modulates contextual fear memory consolidation in animals with experimentally induced type-1 diabetes mellitus. Acta Neuropsychiatr 2023:1-11. [PMID: 36805056 DOI: 10.1017/neu.2023.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
OBJECTIVES In view of the neuroprotective characteristic of cannabidiol (CBD) and its beneficial action on aversive memory in non-diabetic animals, we aimed to investigate in animals with experimentally induced type-1 diabetes mellitus (T1DM) whether CBD treatment would be able to impair the contextual fear memory consolidation, its generalisation and whether the effect would be lasting. We also investigated the CBD effect on anxiety-like responses. METHODS After T1DM induction, animals received single or more prolonged treatment with CBD and were submitted to the contextual fear conditioning test. As expression of activity-regulated cytoskeletal-associated (Arc) protein is necessary for memory consolidation, we evaluated its expression in the dorsal hippocampus (DH). For evaluating anxiety-related responses, animals were submitted to the elevated plus maze test (EPMT), in which the time and number of entries in the open arms were used as anxiety index. RESULTS A single injection of CBD impaired the contextual fear memory consolidation and its generalisation, which was evaluated by exposing the animal in a neutral context. This single injection was able to reduce the elevated expression of Arc in the DH from these animals. Interestingly, more prolonged treatment with CBD also impaired the persistence of context-conditioned fear memory and induced an anxiolytic-like effect, as the treated group spent more time in the open arms of the EPMT. CONCLUSION CBD interferes with contextual fear memory and the dosage regimen of treatment seems to be important. Moreover, we cannot rule out the involvement of emotional aspects in these processes related to fear memory.
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Herszage J, Bönstrup M, Cohen LG, Censor N. Reactivation-induced motor skill modulation does not operate at a rapid micro-timescale level. Sci Rep 2023; 13:2930. [PMID: 36808164 PMCID: PMC9941091 DOI: 10.1038/s41598-023-29963-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Abundant evidence shows that consolidated memories are susceptible to modifications following their reactivation. Processes of memory consolidation and reactivation-induced skill modulation have been commonly documented after hours or days. Motivated by studies showing rapid consolidation in early stages of motor skill acquisition, here we asked whether motor skill memories are susceptible to modifications following brief reactivations, even at initial stages of learning. In a set of experiments, we collected crowdsourced online motor sequence data to test whether post-encoding interference and performance enhancement occur following brief reactivations in early stages of learning. Results indicate that memories forming during early learning are not susceptible to interference nor to enhancement within a rapid reactivation-induced time window, relative to control conditions. This set of evidence suggests that reactivation-induced motor skill memory modulation might be dependent on consolidation at the macro-timescale level, requiring hours or days to occur.
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Affiliation(s)
- Jasmine Herszage
- grid.12136.370000 0004 1937 0546School of Psychological Sciences and Sagol School of Neuroscience, Tel Aviv University, Sharet Building, 69978 Tel Aviv, Israel
| | - Marlene Bönstrup
- grid.9647.c0000 0004 7669 9786Department of Neurology, University of Leipzig, Leipzig, Germany
| | - Leonardo G. Cohen
- grid.416870.c0000 0001 2177 357XHuman Cortical Physiology and Neurorehabilitation Section, NINDS, NIH, Bethesda, MD USA
| | - Nitzan Censor
- School of Psychological Sciences and Sagol School of Neuroscience, Tel Aviv University, Sharet Building, 69978, Tel Aviv, Israel.
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104
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Extracellular zinc regulates contextual fear memory formation in male rats through MMP-BDNF-TrkB pathway in dorsal hippocampus and basolateral amygdala. Behav Brain Res 2023; 439:114230. [PMID: 36442645 DOI: 10.1016/j.bbr.2022.114230] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 11/26/2022]
Abstract
Large amount of zinc (100 µM even up to 300 µM) is released from the nerve terminals in response to high frequency neuronal stimulation in certain brain regions including hippocampus and amygdala. However, its precise pharmacological effect is poorly understood. Here, we investigated the role of extracellular zinc (endogenous zinc) and exogenous zinc in memory formation using contextual fear conditioning (CFC) model. Male Sprague Dawley rats were trained for fear conditioning followed by in vivo microdialysis for collection of microdialysate samples from CA1 and CA3 regions of hippocampus and basolateral amygdala (BLA). Extracellular zinc chelator CaEDTA, BDNF scavenger TrkB-Fc, exogenous 7,8-DHF and matrix metalloproteinases (MMP) inhibitor were infused into the CA1 and CA3 regions of hippocampus and BLA after CFC. Different doses of exogenous zinc hydroaspartate were administered intraperitoneally immediately after CFC. We found that CFC increased the level of extracellular zinc in the hippocampus and BLA. Infusing the CaEDTA, TrkB-Fc and MMP inhibitor into the CA1 and CA3 regions of hippocampus and BLA disrupted the fear memory formation. Furthermore, administration of TrKB agonist 7,8-DHF reversed the inhibitory effect of CaEDTA on fear memory formation, suggesting that extracellular zinc may regulate fear memory formation via the BDNF-TrKB pathway. We also found that high dose of exogenous zinc hydroaspartate supplementation increased extracellular zinc levels in brain and enhanced fear memory formation. Altogether, these findings indicate that extracellular zinc may participate in formation of contextual fear memory through MMP-BDNF-TrkB pathway in the hippocampus and BLA.
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105
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Glucocorticoid-based pharmacotherapies preventing PTSD. Neuropharmacology 2023; 224:109344. [PMID: 36402246 DOI: 10.1016/j.neuropharm.2022.109344] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/07/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022]
Abstract
Posttraumatic stress disorder (PTSD) is a highly disabling psychiatric condition that may arise after exposure to acute and severe trauma. It is a highly prevalent mental disorder worldwide, and the current treatment options for these patients remain limited due to low effectiveness. The time window right after traumatic events provides clinicians with a unique opportunity for preventive interventions against potential deleterious alterations in brain function that lead to PTSD. Some studies pointed out that PTSD patients present an abnormal function of the hypothalamic-pituitary-adrenal axis that may contribute to a vulnerability toward PTSD. Moreover, glucocorticoids have arisen as a promising option for preventing the disorder's development when administered in the aftermath of trauma. The present work compiles the recent findings of glucocorticoid administration for the prevention of a PTSD phenotype, from human studies to animal models of PTSD. Overall, glucocorticoid-based therapies for preventing PTSD demonstrated moderate evidence in terms of efficacy in both clinical and preclinical studies. Although clinical studies point out that glucocorticoids may not be effective for all patients' subpopulations, those with adequate traits might greatly benefit from them. Preclinical studies provide precise insight into the mechanisms mediating this preventive effect, showing glucocorticoid-based prevention to reduce long-lasting behavioral and neurobiological abnormalities caused by traumatic stress. However, further research is needed to delineate the precise mechanisms and the extent to which these interventions can translate into lower PTSD rates and morbidity. This article is part of the Special Issue on 'Fear, Anxiety and PTSD'.
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106
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Correa-Netto NF, Masukawa MY, Silva-Gomes AM, Linardi A, Santos-Junior JG. Memory reactivation mediates emotional valence updating of contextual memory in mice with protracted morphine withdrawal. Behav Brain Res 2023; 438:114212. [PMID: 36370948 DOI: 10.1016/j.bbr.2022.114212] [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: 07/19/2022] [Revised: 10/29/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022]
Abstract
Mice subjected to morphine locomotor sensitization develop increased anxiety-behavior expression during protracted morphine withdrawal. This behavioral change is dependent on reexposure to the context of locomotor sensitization and reflects a state of conditioned anxiety. In this study, the effect of memory reconsolidation on the expression of conditioned anxiety in mice with protracted morphine withdrawal was examined. Five experimental protocols involving male C57BL/6 mice were used in which the animals were subjected to locomotor sensitization induced by morphine and reexposed to the context associated with the drug effect 28 days after locomotor sensitization and immediately after subjected to elevated plus maze. In experiment 1, mice were subjected or not to memory reactivation session and was observed that memory reactivation 27 days after sensitization reduced conditioned anxiety. In experiment 2, mice were subjected to memory reactivation, 24 h, 6 h or 1 h before contextual reexposure, and the effect of memory reactivation coincided with the temporal requirement for reconsolidation. In experiment 3, which involved exposure to a situation of acute stress immediately before memory reactivation, the mice demonstrated a return to increased conditioned anxiety. To confirm the influence of reconsolidation, in experiments 4 and 5, mice subjected to memory reactivation were treated with Nimodipine, diazepam or cyclohexamine, substances commonly used as pharmacological controls in reconsolidation experiments. Treatment with each substance separately inhibited the effect of reactivation in experiment 5 (presence of acute stressor) but not in experiment 4 (absence of acute stressor). These results suggest that, in our experimental model, reconsolidation is mediated through updating of the emotional valence of contextual memory associated with the administration of morphine.
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Affiliation(s)
- Nelson Francisco Correa-Netto
- Department of Physiological Sciences, Santa Casa of São Paulo Medical School, Rua Cesário Mota Junior, 61, Vila Buarque, São Paulo 01221-020, SP, Brazil.
| | - Márcia Yuriko Masukawa
- Department of Physiological Sciences, Santa Casa of São Paulo Medical School, Rua Cesário Mota Junior, 61, Vila Buarque, São Paulo 01221-020, SP, Brazil
| | - Alessandro Marcos Silva-Gomes
- Department of Physiological Sciences, Santa Casa of São Paulo Medical School, Rua Cesário Mota Junior, 61, Vila Buarque, São Paulo 01221-020, SP, Brazil
| | - Alessandra Linardi
- Department of Physiological Sciences, Santa Casa of São Paulo Medical School, Rua Cesário Mota Junior, 61, Vila Buarque, São Paulo 01221-020, SP, Brazil
| | - Jair Guilherme Santos-Junior
- Department of Physiological Sciences, Santa Casa of São Paulo Medical School, Rua Cesário Mota Junior, 61, Vila Buarque, São Paulo 01221-020, SP, Brazil
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107
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Chen KT, Shih LC, Mao SC, Chen JS. Mimicking Pain-Perceptual Sensitization and Pattern Recognition Based on Capacitance- and Conductance-Regulated Neuroplasticity in Neural Network. ACS APPLIED MATERIALS & INTERFACES 2023; 15:9593-9603. [PMID: 36752572 DOI: 10.1021/acsami.2c20297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Neuromorphic computing, inspired by the biological neuronal system, is a high potential approach to substantially alleviate the cost of computational latency and energy for massive data processing. Artificial synapses with regulable synaptic weights are the basis of neuromorphic computation, providing an efficient and low-power system to overcome the constraints of the von Neumann architecture. Here, we report an ITO/TaOx-based synaptic capacitor and transistor. With the drift motion of mobile-charged ions in the TaOx, the capacitance and channel conductance can be tuned to exhibit synaptic weight modulation. Robust stability in the cycle-to-cycle (C2C) variation is found in capacitance and conductance potentiation/depression weight updating of 0.9 and 1.8%, respectively. Simulation results show a higher classification accuracy of handwritten digit recognition (95%) in capacitance synapses than that in conductance synapses (84%). Besides, the synaptic capacitor consumes much less energy than the synaptic transistor. Moreover, the ITO/TaOx-based capacitor successfully emulates the pain-perceptual sensitization on top of the superior performance, indicating its promising potential in applying the capacitive neural network.
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Affiliation(s)
- Kuan-Ting Chen
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Li-Chung Shih
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Shi-Cheng Mao
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Jen-Sue Chen
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
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108
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Rosa J, de Carvalho Myskiw J, Fiorenza NG, Furini CRG, Sapiras GG, Izquierdo I. Hippocampal cholinergic receptors and the mTOR participation in fear-motivated inhibitory avoidance extinction memory. Behav Brain Res 2023; 437:114129. [PMID: 36179804 DOI: 10.1016/j.bbr.2022.114129] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 09/07/2022] [Accepted: 09/24/2022] [Indexed: 10/14/2022]
Abstract
Evidence has demonstrated the hippocampal cholinergic system and the mammalian target of rapamycin (mTOR) participation during the memory formation of aversive events. This study assessed the role of these systems in the hippocampus for the extinction memory process by submitting male Wistar rats to fear-motivated step-down inhibitory avoidance (IA). The post-extinction session administration of the nicotinic and muscarinic cholinergic receptor antagonists, mecamylamine and scopolamine, respectively, both at doses of 2 µg/µl/side, and rapamycin, an mTOR inhibitor (0.02 µg/µl/side), into the CA1 region of the dorsal hippocampus, impaired the IA extinction memory. Furthermore, the nicotinic and muscarinic cholinergic receptor agonists, nicotine and muscarine, respectively, had a dose-dependent effect on the IA extinction memory when administered intra-CA1, immediately after the extinction session. Nicotine (0.6 µg/µl/side) and muscarine (0.02 µg/µl/side), respectively, had no effect, while the higher doses (6 and 2 µg/µl/side, respectively) impaired the IA extinction memory. Interestingly, the co-administration of muscarine at the lower dose blocked the impairment that was induced by rapamycin. This effect was not observed when nicotine at the lower dose was co-administered. These results have demonstrated the participation of the cholinergic receptors and mTOR in the hippocampus for IA extinction, and that the cholinergic agonists had a dose-dependent effect on the IA extinction memory. This study provides insights related to the behavioural aspects and the neurobiological properties underlying the early stage of fear-motivated IA extinction memory consolidation and suggests that there is hippocampal muscarinic receptor participation independent of mTOR in this memory process.
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Affiliation(s)
- Jessica Rosa
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; Department of Pharmacology, School of Medicine of Ribeirao Preto, University of Sao Paulo (USP), Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil.
| | - Jociane de Carvalho Myskiw
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, RJ, Brazil; Department of Biophysics, Institute of Biosciences, Federal University of Rio Grande do Sul (UFRGS), Bento Gonçalves 9500, Building 43422, Room 208 A, 91501-970 Porto Alegre, RS, Brazil
| | - Natalia Gindri Fiorenza
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; Oswaldo Cruz Foundation (FIOCRUZ), Branch Ceara, 60760-000 Eusebio, CE, Brazil
| | - Cristiane Regina Guerino Furini
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, RJ, Brazil; Laboratory of Cognition and Memory Neurobiology, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, 3rd Floor, 90610-000 Porto Alegre, RS, Brazil
| | - Gerson Guilherme Sapiras
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; Clinical Hospital of Passo Fundo (HCPF), Tiradentes 295, 99010-260 Passo Fundo, RS, Brazil
| | - Ivan Izquierdo
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, RJ, Brazil
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Niloy N, Hediyal TA, Vichitra C, Sonali S, Chidambaram SB, Gorantla VR, Mahalakshmi AM. Effect of Cannabis on Memory Consolidation, Learning and Retrieval and Its Current Legal Status in India: A Review. Biomolecules 2023; 13:biom13010162. [PMID: 36671547 PMCID: PMC9855787 DOI: 10.3390/biom13010162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/31/2022] [Accepted: 01/02/2023] [Indexed: 01/15/2023] Open
Abstract
Cannabis is one of the oldest crops grown, traditionally held religious attachments in various cultures for its medicinal use much before its introduction to Western medicine. Multiple preclinical and clinical investigations have explored the beneficial effects of cannabis in various neurocognitive and neurodegenerative diseases affecting the cognitive domains. Tetrahydrocannabinol (THC), the major psychoactive component, is responsible for cognition-related deficits, while cannabidiol (CBD), a non-psychoactive phytocannabinoid, has been shown to elicit neuroprotective activity. In the present integrative review, the authors focus on the effects of cannabis on the different cognitive domains, including learning, consolidation, and retrieval. The present study is the first attempt in which significant focus has been imparted on all three aspects of cognition, thus linking to its usage. Furthermore, the investigators have also depicted the current legal position of cannabis in India and the requirement for reforms.
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Affiliation(s)
- Nandi Niloy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
| | - Tousif Ahmed Hediyal
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
- Centre for Experimental Pharmacology and Toxicology, Central Animal Facility, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
| | - Chandrasekaran Vichitra
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
- Centre for Experimental Pharmacology and Toxicology, Central Animal Facility, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
| | - Sharma Sonali
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
- Centre for Experimental Pharmacology and Toxicology, Central Animal Facility, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
| | - Saravana Babu Chidambaram
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
- Centre for Experimental Pharmacology and Toxicology, Central Animal Facility, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
| | - Vasavi Rakesh Gorantla
- Department of Anatomical Science, St. George’s University, University Centre, St. Georges FZ818, Grenada
- Correspondence: (V.R.G.); (A.M.M.)
| | - Arehally M. Mahalakshmi
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
- Centre for Experimental Pharmacology and Toxicology, Central Animal Facility, JSS Academy of Higher Education & Research, SS Nagar, Mysore 570015, Karnataka, India
- Correspondence: (V.R.G.); (A.M.M.)
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Changes in the Electrical Characteristics of Premotor Interneurons and Serotonin-Containing Modulator Snail Neurons upon Developing a Contextual Conditioned Reflex and Its Reconsolidation. BIONANOSCIENCE 2023. [DOI: 10.1007/s12668-023-01062-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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111
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Tavares TF, Bueno JLO, Doyère V. Temporal prediction error triggers amygdala-dependent memory updating in appetitive operant conditioning in rats. Front Behav Neurosci 2023; 16:1060587. [PMID: 36703723 PMCID: PMC9873233 DOI: 10.3389/fnbeh.2022.1060587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/21/2022] [Indexed: 01/11/2023] Open
Abstract
Reinforcement learning theories postulate that prediction error, i.e., a discrepancy between the actual and expected outcomes, drives reconsolidation and new learning, inducing an updating of the initial memory. Pavlovian studies have shown that prediction error detection is a fundamental mechanism in triggering amygdala-dependent memory updating, where the temporal relationship between stimuli plays a critical role. However, in contrast to the well-established findings in aversive situations (e.g., fear conditioning), only few studies exist on prediction error in appetitive operant conditioning, and even less with regard to the role of temporal parameters. To explore if temporal prediction error in an appetitive operant paradigm could generate an updating and consequent reconsolidation and/or new learning of temporal association, we ran four experiments in adult male rats. Experiment 1 verified whether an unexpected delay in the time of reward's availability (i.e., a negative temporal prediction error) in a single session produces an updating in long-term memory of temporal expectancy in an appetitive operant conditioning. Experiment 2 showed that negative prediction errors, either due to the temporal change or through reward omission, increased in the basolateral amygdala nucleus (BLA) the activation of a protein that is critical for memory formation. Experiment 3 revealed that the presence of a protein synthesis inhibitor (anisomycin) in the BLA during the session when the reward was delayed (Error session) affected the temporal updating. Finally, Experiment 4 showed that anisomycin, when infused immediately after the Error session, interfered with the long-term memory of the temporal updating. Together, our study demonstrated an involvement of BLA after a change in temporal and reward contingencies, and in the resulting updating in long-term memory in appetitive operant conditioning.
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Affiliation(s)
- Tatiane Ferreira Tavares
- Laboratory of Associative Processes, Temporal Control and Memory, Department of Psychology, University of São Paulo, Ribeirão Preto, Brazil,Institut des Neurosciences Paris-Saclay – NeuroPSI CNRS, Université Paris-Saclay, Saclay, France,*Correspondence: Tatiane Ferreira Tavares,
| | - José Lino Oliveira Bueno
- Laboratory of Associative Processes, Temporal Control and Memory, Department of Psychology, University of São Paulo, Ribeirão Preto, Brazil
| | - Valérie Doyère
- Institut des Neurosciences Paris-Saclay – NeuroPSI CNRS, Université Paris-Saclay, Saclay, France,Valérie Doyère,
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Chong YS, Wong LW, Gaunt J, Lee YJ, Goh CS, Morris RGM, Ch'ng TH, Sajikumar S. Distinct contributions of ventral CA1/amygdala co-activation to the induction and maintenance of synaptic plasticity. Cereb Cortex 2023; 33:676-690. [PMID: 35253866 DOI: 10.1093/cercor/bhac093] [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: 12/24/2021] [Revised: 02/11/2022] [Accepted: 02/12/2022] [Indexed: 02/03/2023] Open
Abstract
The amygdala is known to modulate hippocampal synaptic plasticity. One role could be an immediate effect of basolateral amygdala (BLA) in priming synaptic plasticity in the hippocampus. Another role could be through associative synaptic co-operation and competition that triggers events involved in the maintenance of synaptic potentiation. We present evidence that the timing and activity level of BLA stimulation are important factors for the induction and maintenance of long-term potentiation (LTP) in ventral hippocampal area CA1. A 100 Hz BLA co-stimulation facilitated the induction of LTP, whereas 200 Hz co-stimulation attenuated induction. A 100 Hz BLA co-stimulation also caused enhanced persistence, sufficient to prevent synaptic competition. This maintenance effect is likely through translational mechanisms, as mRNA expression of primary response genes was unaffected, whereas protein level of plasticity-related products was increased. Further understanding of the neural mechanisms of amygdala modulation on hippocampus could provide insights into the mechanisms of emotional disorders.
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Affiliation(s)
- Yee Song Chong
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, SIngapore 117597, Singapore.,Life Sciences Institute Neurobiology Programme, National University of Singapore, Singapore 117456, Singapore
| | - Lik-Wei Wong
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, SIngapore 117597, Singapore.,Life Sciences Institute Neurobiology Programme, National University of Singapore, Singapore 117456, Singapore.,Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Jessica Gaunt
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Yan Jun Lee
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore.,Interdisciplinary Graduate School, Nanyang Technological University, Singapore 637335, Singapore
| | - Cai Shan Goh
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, SIngapore 117597, Singapore.,Life Sciences Institute Neurobiology Programme, National University of Singapore, Singapore 117456, Singapore
| | - Richard G M Morris
- Laboratory for Cognitive Neuroscience, Centre for Cognitive and Neural Systems, University of Edinburgh, Edinburgh EH8 9JZ, Scotland
| | - Toh Hean Ch'ng
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | - Sreedharan Sajikumar
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, SIngapore 117597, Singapore.,Life Sciences Institute Neurobiology Programme, National University of Singapore, Singapore 117456, Singapore.,Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
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Kuhne LA, Ksiezarczyk AM, Braumann KM, Reer R, Jacobs T, Röder B, Hötting K. Cardiovascular exercise, learning, memory, and cytokines: Results of a ten-week randomized controlled training study in young adults. Biol Psychol 2023; 176:108466. [PMID: 36455805 DOI: 10.1016/j.biopsycho.2022.108466] [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: 07/02/2022] [Revised: 11/11/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
Physical exercise has been shown to enhance memory and to increase neuroplasticity. Rodent studies have revealed modulating effects of signaling molecules of the immune system (cytokines) on hippocampal plasticity and memory. Acute and chronic exercise have been both found to alter the number and function of immune cells. Thus, physical exercise might enhance neuroplasticity via an altered immune response. In this study we tested whether multiple repetitions of a vocabulary learning task combined with a bout of cardiovascular exercise enhances learning in humans and whether memory improvements correlated with acute exercise-induced cytokine changes. Data of 52 participants (20-40 years of age) who were randomly assigned to a cardiovascular exercise group (cycling) or a control group (stretching) were analyzed. During the 10-week treatment, participants completed 18 learning-exercise sessions. In each of these sessions, the vocabulary learning task was always performed immediately before exercising started. To assess acute exercise-induced changes in cytokine levels, blood sampling was performed at rest and immediately after exercising in two of the sessions. Learning success measured as increase in learning across all sessions and vocabulary retention four weeks after the treatment had ended did not differ between groups. The cycling group showed a relatively larger acute increase in IL-6, IL-1ra, IL-4, and IFN-γ compared to the stretching group. Exploratory analyses revealed significant positive associations between within-session learning and acute exercise-induced increases in IL-6 and IL-1ra in the cycling group only. These results suggest that the immune system may act as a mediator of exercise-induced cognitive benefits.
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Affiliation(s)
- Laura A Kuhne
- Biological Psychology and Neuropsychology, University of Hamburg, Von-Melle-Park 11, 20146 Hamburg, Germany.
| | | | | | - Rüdiger Reer
- Sports and Exercise Medicine, University of Hamburg, Turmweg 2, 20148 Hamburg, Germany.
| | - Thomas Jacobs
- Protozoa Immunology, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Straße 74, 20359 Hamburg, Germany.
| | - Brigitte Röder
- Biological Psychology and Neuropsychology, University of Hamburg, Von-Melle-Park 11, 20146 Hamburg, Germany.
| | - Kirsten Hötting
- Biological Psychology and Neuropsychology, University of Hamburg, Von-Melle-Park 11, 20146 Hamburg, Germany.
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114
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Goodman J, Leong KC, Packard MG. NMDA receptor blockade in the dorsolateral striatum impairs consolidation but not retrieval of habit memory. Neurobiol Learn Mem 2023; 197:107709. [PMID: 36503101 DOI: 10.1016/j.nlm.2022.107709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/24/2022] [Accepted: 12/04/2022] [Indexed: 12/13/2022]
Abstract
The present study investigated whether N-methyl-d-aspartate (NMDA) receptors in the dorsolateral striatum (DLS) mediate consolidation and retrieval of habit memory. Adult male Long-Evans rats were trained in a response learning version of a water plus-maze task in which rats were reinforced to make a habitual and consistent body-turn response at the maze choice point in order to mount a hidden escape platform. Prior research indicates that acquisition, consolidation, and retrieval in this task requires DLS function. The present study consisted of two experiments. In Experiment 1, rats received intra-DLS post-training injections of the NMDA receptor antagonist 2-amino-5- phosphonopentanoic acid (AP5; 2 µg/side) to examine the role of NMDA receptors in consolidation of habit memory. In Experiment 2, different groups of rats received a single pre-retrieval injection of AP5 in the DLS (AP5; 2 µg/side) during the last day of maze training to examine the potential role of NMDA receptors in retrieval of habit memory. Results indicated that post-training intra-DLS AP5 injections impaired memory consolidation. However, administration of AP5 at the same dose that impaired consolidation had no effect on memory retrieval. The findings are consistent with previous research indicating a role for NMDA receptors in the DLS in memory consolidation, and suggest that NMDA-dependent synaptic activity in the DLS may not be a critical component of habit memory retrieval.
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Affiliation(s)
- Jarid Goodman
- Department of Psychology, Delaware State University, Dover, DE, United States
| | - Kah-Chung Leong
- Department of Psychology, Trinity University, San Antonio, TX, United States
| | - Mark G Packard
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, United States
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Barrea L, Pugliese G, Frias-Toral E, El Ghoch M, Castellucci B, Chapela SP, Carignano MDLA, Laudisio D, Savastano S, Colao A, Muscogiuri G. Coffee consumption, health benefits and side effects: a narrative review and update for dietitians and nutritionists. Crit Rev Food Sci Nutr 2023; 63:1238-1261. [PMID: 34455881 DOI: 10.1080/10408398.2021.1963207] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Coffee is one of the most popular beverages worldwide; however, its impact on health outcomes and adverse effects is not fully understood. The current review aims to establish an update about the benefits of coffee consumption on health outcomes highlighting its side effects, and finally coming up with an attempt to provide some recommendations on its doses. A literature review using the PubMed/Medline database was carried out and the data were summarized by applying a narrative approach using the available evidence based on the literature. The main findings were the following: first, coffee may contribute to the prevention of inflammatory and oxidative stress-related diseases, such as obesity, metabolic syndrome and type 2 diabetes; second, coffee consumption seems to be associated with a lower incidence of several types of cancer and with a reduction in the risk of all-cause mortality; finally, the consumption of up to 400 mg/day (1-4 cups per day) of caffeine is safe. However, the time gap between coffee consumption and some drugs should be taken into account in order to avoid interaction. However, most of the data were based on cross-sectional or/and observational studies highlighting an association of coffee intake and health outcomes; thus, randomized controlled studies are needed in order to identify a causality link.
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Affiliation(s)
- Luigi Barrea
- Dipartimento di Scienze Umanistiche, Università Telematica Pegaso, Via Porzio, Centro Direzionale, isola F2, 80143 Napoli, Italy
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Gabriella Pugliese
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Evelyn Frias-Toral
- School of Medicine, Universidad Católica Santiago de Guayaquil, Guayaquil, Ecuador
| | - Marwan El Ghoch
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Beirut Arab University, P.O. Box 11-5020 Riad El Solh, Beirut 11072809, Lebanon
| | - Bianca Castellucci
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Sebastián Pablo Chapela
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Buenos Aires, Argentina
- Hospital Británico de Buenos Aires, Departamento de Terapia Intensiva, Buenos Aires, Argentina
| | | | - Daniela Laudisio
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Silvia Savastano
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Annamaria Colao
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Cattedra Unesco "Educazione alla salute e allo sviluppo sostenibile", University Federico II, Naples, Italy
| | - Giovanna Muscogiuri
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Cattedra Unesco "Educazione alla salute e allo sviluppo sostenibile", University Federico II, Naples, Italy
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Osorio-Gómez D, Miranda MI, Guzmán-Ramos K, Bermúdez-Rattoni F. Transforming experiences: Neurobiology of memory updating/editing. Front Syst Neurosci 2023; 17:1103770. [PMID: 36896148 PMCID: PMC9989287 DOI: 10.3389/fnsys.2023.1103770] [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: 11/20/2022] [Accepted: 02/07/2023] [Indexed: 02/23/2023] Open
Abstract
Long-term memory is achieved through a consolidation process where structural and molecular changes integrate information into a stable memory. However, environmental conditions constantly change, and organisms must adapt their behavior by updating their memories, providing dynamic flexibility for adaptive responses. Consequently, novel stimulation/experiences can be integrated during memory retrieval; where consolidated memories are updated by a dynamic process after the appearance of a prediction error or by the exposure to new information, generating edited memories. This review will discuss the neurobiological systems involved in memory updating including recognition memory and emotional memories. In this regard, we will review the salient and emotional experiences that promote the gradual shifting from displeasure to pleasure (or vice versa), leading to hedonic or aversive responses, throughout memory updating. Finally, we will discuss evidence regarding memory updating and its potential clinical implication in drug addiction, phobias, and post-traumatic stress disorder.
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Affiliation(s)
- Daniel Osorio-Gómez
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Maria Isabel Miranda
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Mexico
| | - Kioko Guzmán-Ramos
- División de Ciencias Biológicas y de la Salud, Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana, Lerma de Villada, Mexico
| | - Federico Bermúdez-Rattoni
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
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117
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Provencher J, Cernik R, Marin MF. Impact of Stress and Exercise on Fear Extinction. Curr Top Behav Neurosci 2023; 64:157-178. [PMID: 37498495 DOI: 10.1007/7854_2023_432] [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] [Indexed: 07/28/2023]
Abstract
This chapter reviews the literature on the impact of stress and exercise on fear extinction. Given that key brain regions of the fear circuitry (e.g., hippocampus, amygdala and frontal cortex) can be modulated by stress hormones, it is important to investigate how stress influences this process. Laboratory-based studies performed in healthy adults have yielded mixed results, which are most likely attributable to various methodological factors. Among these factors, inter-individual differences modulating the stress response and timing of stressor administration with respect to the task may contribute to this heterogeneity. Given that fear is a core manifestation of various psychopathologies and that exposure-based therapy relies on fear extinction principles, several studies have attempted to assess the role of stress hormones on exposure-based therapy in patients suffering from post-traumatic stress disorder or anxiety disorders. These studies tend to suggest a beneficial impact of stress hormones (through either natural endogenous variations or synthetic administration) on exposure-based therapy as assessed mostly by subjective fear measures. Similar to stress, exercise can have an impact on many physiological and biological systems in humans. Of note, exercise modulates biomarkers such as brain-derived neurotrophic factor (BDNF) and anandamide (EAE) that act on brain regions implicated in the fear circuitry, supporting the importance of studying the impact of exercise on fear extinction. Overall, the results converge and indicate that fear extinction (tested in the laboratory or via exposure-based therapy in clinical populations) can be enhanced with exercise. Further research is needed to understand the mechanisms by which stress and exercise modulate fear learning and extinction processes, as well as to maximize the applicability to clinical contexts.
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Affiliation(s)
- Jessie Provencher
- Department of Psychology, Université du Québec à Montréal, Montreal, QC, Canada
- Research Centre of the Institut Universitaire en Santé Mentale de Montréal, Montreal, QC, Canada
| | - Rebecca Cernik
- Department of Psychology, Université du Québec à Montréal, Montreal, QC, Canada
- Research Centre of the Institut Universitaire en Santé Mentale de Montréal, Montreal, QC, Canada
| | - Marie-France Marin
- Department of Psychology, Université du Québec à Montréal, Montreal, QC, Canada.
- Research Centre of the Institut Universitaire en Santé Mentale de Montréal, Montreal, QC, Canada.
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118
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Alhassen W, Alhassen S, Chen J, Monfared RV, Alachkar A. Cilia in the Striatum Mediate Timing-Dependent Functions. Mol Neurobiol 2023; 60:545-565. [PMID: 36322337 PMCID: PMC9849326 DOI: 10.1007/s12035-022-03095-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/16/2022] [Indexed: 11/07/2022]
Abstract
Almost all brain cells contain cilia, antennae-like microtubule-based organelles. Yet, the significance of cilia, once considered vestigial organelles, in the higher-order brain functions is unknown. Cilia act as a hub that senses and transduces environmental sensory stimuli to generate an appropriate cellular response. Similarly, the striatum, a brain structure enriched in cilia, functions as a hub that receives and integrates various types of environmental information to drive appropriate motor response. To understand cilia's role in the striatum functions, we used loxP/Cre technology to ablate cilia from the dorsal striatum of male mice and monitored the behavioral consequences. Our results revealed an essential role for striatal cilia in the acquisition and brief storage of information, including learning new motor skills, but not in long-term consolidation of information or maintaining habitual/learned motor skills. A fundamental aspect of all disrupted functions was the "time perception/judgment deficit." Furthermore, the observed behavioral deficits form a cluster pertaining to clinical manifestations overlapping across psychiatric disorders that involve the striatum functions and are known to exhibit timing deficits. Thus, striatal cilia may act as a calibrator of the timing functions of the basal ganglia-cortical circuit by maintaining proper timing perception. Our findings suggest that dysfunctional cilia may contribute to the pathophysiology of neuro-psychiatric disorders, as related to deficits in timing perception.
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Affiliation(s)
- Wedad Alhassen
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of California-Irvine, 356A Med Surge II, Irvine, CA 92697-4625 USA
| | - Sammy Alhassen
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of California-Irvine, 356A Med Surge II, Irvine, CA 92697-4625 USA
| | - Jiaqi Chen
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of California-Irvine, 356A Med Surge II, Irvine, CA 92697-4625 USA
| | - Roudabeh Vakil Monfared
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of California-Irvine, 356A Med Surge II, Irvine, CA 92697-4625 USA
| | - Amal Alachkar
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of California-Irvine, 356A Med Surge II, Irvine, CA 92697-4625 USA ,UC Irvine Center for the Neurobiology of Learning and Memory, University of California-Irvine, Irvine, CA 92697 USA ,Institute for Genomics and Bioinformatics, School of Information and Computer Sciences, University of California-Irvine, Irvine, CA 92697 USA
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119
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Piromalli Girado D, Miranda M, Giachero M, Weisstaub N, Bekinschtein P. Endocytosis is required for consolidation of pattern-separated memories in the perirhinal cortex. Front Syst Neurosci 2023; 17:1043664. [PMID: 36911226 PMCID: PMC9995888 DOI: 10.3389/fnsys.2023.1043664] [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: 09/13/2022] [Accepted: 02/07/2023] [Indexed: 02/25/2023] Open
Abstract
Introduction The ability to separate similar experiences into differentiated representations is proposed to be based on a computational process called pattern separation, and it is one of the key characteristics of episodic memory. Although pattern separation has been mainly studied in the dentate gyrus of the hippocampus, this cognitive function if thought to take place also in other regions of the brain. The perirhinal cortex is important for the acquisition and storage of object memories, and in particular for object memory differentiation. The present study was devoted to investigating the importance of the cellular mechanism of endocytosis for object memory differentiation in the perirhinal cortex and its association with brain-derived neurotrophic factor, which was previously shown to be critical for the pattern separation mechanism in this structure. Methods We used a modified version of the object recognition memory task and intracerebral delivery of a peptide (Tat-P4) into the perirhinal cortex to block endocytosis. Results We found that endocytosis is necessary for pattern separation in the perirhinal cortex. We also provide evidence from a molecular disconnection experiment that BDNF and endocytosis-related mechanisms interact for memory discrimination in both male and female rats. Discussion Our experiments suggest that BDNF and endocytosis are essential for consolidation of separate object memories and a part of a time-restricted, protein synthesis-dependent mechanism of memory stabilization in Prh during storage of object representations.
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Affiliation(s)
- Dinka Piromalli Girado
- Laboratory of Memory and Molecular Cognition, Instituto de Neurociencia Cognitiva y Traslacional (Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación INECO-Universidad Favaloro), Buenos Aires, Argentina
| | - Magdalena Miranda
- Laboratory of Memory and Molecular Cognition, Instituto de Neurociencia Cognitiva y Traslacional (Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación INECO-Universidad Favaloro), Buenos Aires, Argentina
| | - Marcelo Giachero
- Laboratory of Memory and Molecular Cognition, Instituto de Neurociencia Cognitiva y Traslacional (Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación INECO-Universidad Favaloro), Buenos Aires, Argentina
| | - Noelia Weisstaub
- Laboratory of Memory and Molecular Cognition, Instituto de Neurociencia Cognitiva y Traslacional (Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación INECO-Universidad Favaloro), Buenos Aires, Argentina
| | - Pedro Bekinschtein
- Laboratory of Memory and Molecular Cognition, Instituto de Neurociencia Cognitiva y Traslacional (Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación INECO-Universidad Favaloro), Buenos Aires, Argentina
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120
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Dorigo A, Valishetti K, Hetsch F, Matsui H, Meier JC, Namikawa K, Köster RW. Functional regionalization of the differentiating cerebellar Purkinje cell population occurs in an activity-dependent manner. Front Mol Neurosci 2023; 16:1166900. [PMID: 37181649 PMCID: PMC10174242 DOI: 10.3389/fnmol.2023.1166900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/11/2023] [Indexed: 05/16/2023] Open
Abstract
Introduction The cerebellum is organized into functional regions each dedicated to process different motor or sensory inputs for controlling different locomotor behaviors. This functional regionalization is prominent in the evolutionary conserved single-cell layered Purkinje cell (PC) population. Fragmented gene expression domains suggest a genetic organization of PC layer regionalization during cerebellum development. However, the establishment of such functionally specific domains during PC differentiation remained elusive. Methods and results We show the progressive emergence of functional regionalization of PCs from broad responses to spatially restricted regions in zebrafish by means of in vivo Ca2+-imaging during stereotypic locomotive behavior. Moreover, we reveal that formation of new dendritic spines during cerebellar development using in vivo imaging parallels the time course of functional domain development. Pharmacological as well as cell-type specific optogenetic inhibition of PC neuronal activity results in reduced PC dendritic spine density and an altered stagnant pattern of functional domain formation in the PC layer. Discussion Hence, our study suggests that functional regionalization of the PC layer is driven by physiological activity of maturing PCs themselves.
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Affiliation(s)
- Alessandro Dorigo
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
| | - Komali Valishetti
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
| | - Florian Hetsch
- Cell Physiology, Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
- Institute of Pathophysiology, University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - Hideaki Matsui
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
- Department of Neuroscience of Disease, Brain Research Institute, Niigata University, Niigata, Japan
| | - Jochen C. Meier
- Cell Physiology, Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
| | - Kazuhiko Namikawa
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
- *Correspondence: Kazuhiko Namikawa,
| | - Reinhard W. Köster
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
- Reinhard W. Köster,
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121
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Hellerstedt R, Talmi D. Reward does not modulate forgetting in free recall tests. Learn Mem 2022; 29:430-434. [PMID: 36446602 PMCID: PMC9749852 DOI: 10.1101/lm.053631.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 11/03/2022] [Indexed: 12/03/2022]
Abstract
Reward is thought to attenuate forgetting through the automatic effect of dopamine on hippocampal memory traces. Here we report a conceptual replication of previous results where we did not observe this effect of reward. Participants encoded eight lists of pictures and recalled picture content immediately or the next day. They were informed that they could gain monetary reward for recalling the pictures, with the level of reward indicated through the frame surrounding the picture. Reward was manipulated both within and across lists. Bayesian statistics found moderate evidence for the null hypothesis that reward does not modulate forgetting in human free recall.
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Affiliation(s)
- Robin Hellerstedt
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, United Kingdom
- Parque Científico y Tecnológico de la Universidad Politécnica de Madrid, 28223 Madrid, Spain
| | - Deborah Talmi
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, United Kingdom
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122
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Kritikos M, Franceschi AM, Vaska P, Clouston SAP, Huang C, Salerno M, Deri Y, Tang C, Pellecchia A, Santiago-Michels S, Sano M, Bromet EJ, Lucchini RG, Gandy S, Luft BJ. Assessment of Alzheimer's Disease Imaging Biomarkers in World Trade Center Responders with Cognitive Impairment at Midlife. World J Nucl Med 2022; 21:267-275. [PMID: 36398306 PMCID: PMC9666002 DOI: 10.1055/s-0042-1750013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
Purpose Incidence of early onset neurocognitive dysfunction has been reported in World Trade Center (WTC) responders. Ongoing studies are investigating the underlying etiology, as we are concerned that an underlying risk of neurodegenerative dementia may be occurring because of their stressful and neurotoxic exposures to particulate matter when they responded to the search and rescue efforts on September 11, 2001. The purpose of this study is to report preliminary results from two ongoing positron emission tomography (PET)/magnetic resonance imaging (MRI) imaging studies investigating the presence of Alzheimer's disease (AD) biomarkers, such as β-amyloid, tau, and neurodegeneration, and compare our findings to published norms. Methods We present findings on 12 WTC responders diagnosed with either cognitive impairment (CI) or mild cognitive impairment (MCI), now at midlife, who underwent PET/MRI brain imaging as part of ongoing studies. Six responders with CI received [ 18 F] florbetaben (FBB) to detect β-amyloidosis and six separate responders with MCI received [ 18 F] flortaucipir (FTP) to detect tauopathy. All 12 responders underwent concomitant MRI scans for gray matter volume analysis of neurodegeneration. Results PET analysis revealed 50% FBB and 50% of FTP scans were clinically read as positive and that 50% of FTP scans identified as consistent with Braak's stage I or II. Furthermore, one responder identified as centiloid positive for AD. Gray matter volumes from MRI analyses were compared with age/sex-matched norms (Neuroquant), identifying abnormally low cortical volumes in the occipital and temporal lobes, as well as the inferior temporal gyri and the entorhinal cortex. Conclusion These preliminary results suggest that WTC responders with neurocognitive dysfunction may be at increased risk for a neurodegenerative dementia process as a result of their exposures at September 11, 2001.
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Affiliation(s)
- Minos Kritikos
- Department of Family, Population, and Preventive Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Ana M. Franceschi
- Division of Neuroradiology, Department of Radiology, Northwell Health/Donald and Barbara Zucker School of Medicine, Manhasset, New York, United States
| | - Paul Vaska
- Department of Radiology, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Sean A. P. Clouston
- Department of Family, Population, and Preventive Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Chuan Huang
- Department of Radiology, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
- Department of Psychiatry, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Michael Salerno
- Department of Radiology, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Yael Deri
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Cheuk Tang
- Icahn School of Medicine at Mount Sinai, New York, New York, United States
| | - Alison Pellecchia
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Stephanie Santiago-Michels
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Mary Sano
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, United States
| | - Evelyn J. Bromet
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
| | - Roberto G. Lucchini
- Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, United States
| | - Sam Gandy
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, United States
- Department of Neurology, The Barbara and Maurice Deane Center for Wellness and Cognitive Health and the Mount Sinai Center for NFL Neurological Care, Icahn School of Medicine at Mount Sinai, New York, New York, United States
| | - Benjamin J. Luft
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, United States
- Stony Brook World Trade Center Wellness Program, Stony Brook Medicine, Stony Brook, New York, United States
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Bai H, Huang H, Zhao N, Gu H, Li Y, Zou W, Wu T, Huang X. Small G protein RAC-2 regulates forgetting via the JNK-1 signalling pathway in Caenorhabditis elegans. Eur J Neurosci 2022; 56:6162-6173. [PMID: 36321581 DOI: 10.1111/ejn.15855] [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: 03/26/2022] [Revised: 10/05/2022] [Accepted: 10/18/2022] [Indexed: 11/23/2022]
Abstract
Although forgetting was once regarded as a passive decline in memory and an occasional source of embarrassment, recent research suggests that it is an active biological process of removing outdated or irrelevant memories via activation of specific genes and signal transduction pathways. Rho family G proteins are known to have a role in synaptic plasticity mediated by the actin cytoskeleton. However, the current study reveals that another Rho guanosine triphosphate enzyme (GTPase), RAC-2, facilitates the occurrence of forgetting in Caenorhabditis elegans independent of actin dynamics. Functioning downstream of RAC-2 in the same signalling pathway, JNK-1 and its phosphorylated protein are required to positively regulate forgetting. The pan-neuronal rescue of RAC-2 or JNK-1, instead of AWC neuron-specific expression, reverses the delayed forgetting caused by the rac-2 mutation, which indicates that the involvement of RAC-2/JNK-1 in more than AWCs must be required. In summary, our work elucidates the action of the Rho GTPase RAC-2 and downstream JNK-1 as a potential novel pathway in forgetting in C. elegans.
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Affiliation(s)
- Hua Bai
- School of Medicine, and State Key Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming, China.,College of Public Health, Kunming Medical University, Kunming, China
| | - Hui Huang
- School of Medicine, and State Key Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming, China
| | - Ninghui Zhao
- Neurosurgery of the Second Hospital affiliated with Kunming Medical University, Kunming, China
| | - Huan Gu
- School of Medicine, and State Key Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming, China
| | - Yixin Li
- School of Medicine, and State Key Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming, China
| | - Wei Zou
- College of Public Health, Kunming Medical University, Kunming, China
| | - Tingting Wu
- Neurosurgery of the Second Hospital affiliated with Kunming Medical University, Kunming, China
| | - Xiaowei Huang
- School of Medicine, and State Key Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming, China
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Kehrer T, Cupic A, Ye C, Yildiz S, Bouhhadou M, Crossland NA, Barrall E, Cohen P, Tseng A, Çağatay T, Rathnasinghe R, Flores D, Jangra S, Alam F, Mena N, Aslam S, Saqi A, Marin A, Rutkowska M, Ummadi MR, Pisanelli G, Richardson RB, Veit EC, Fabius JM, Soucheray M, Polacco BJ, Evans MJ, Swaney DL, Gonzalez-Reiche AS, Sordillo EM, van Bakel H, Simon V, Zuliani-Alvarez L, Fontoura BMA, Rosenberg BR, Krogan NJ, Martinez-Sobrido L, García-Sastre A, Miorin L. Impact of SARS-CoV-2 ORF6 and its variant polymorphisms on host responses and viral pathogenesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2022:2022.10.18.512708. [PMID: 36299428 DOI: 10.1101/2022.12.07.519389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
UNLABELLED We and others have previously shown that the SARS-CoV-2 accessory protein ORF6 is a powerful antagonist of the interferon (IFN) signaling pathway by directly interacting with Nup98-Rae1 at the nuclear pore complex (NPC) and disrupting bidirectional nucleo-cytoplasmic trafficking. In this study, we further assessed the role of ORF6 during infection using recombinant SARS-CoV-2 viruses carrying either a deletion or a well characterized M58R loss-of-function mutation in ORF6. We show that ORF6 plays a key role in the antagonism of IFN signaling and in viral pathogenesis by interfering with karyopherin(importin)-mediated nuclear import during SARS-CoV-2 infection both in vitro , and in the Syrian golden hamster model in vivo . In addition, we found that ORF6-Nup98 interaction also contributes to inhibition of cellular mRNA export during SARS-CoV-2 infection. As a result, ORF6 expression significantly remodels the host cell proteome upon infection. Importantly, we also unravel a previously unrecognized function of ORF6 in the modulation of viral protein expression, which is independent of its function at the nuclear pore. Lastly, we characterized the ORF6 D61L mutation that recently emerged in Omicron BA.2 and BA.4 and demonstrated that it is able to disrupt ORF6 protein functions at the NPC and to impair SARS-CoV-2 innate immune evasion strategies. Importantly, the now more abundant Omicron BA.5 lacks this loss-of-function polymorphism in ORF6. Altogether, our findings not only further highlight the key role of ORF6 in the antagonism of the antiviral innate immune response, but also emphasize the importance of studying the role of non-spike mutations to better understand the mechanisms governing differential pathogenicity and immune evasion strategies of SARS-CoV-2 and its evolving variants. ONE SENTENCE SUMMARY SARS-CoV-2 ORF6 subverts bidirectional nucleo-cytoplasmic trafficking to inhibit host gene expression and contribute to viral pathogenesis.
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125
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Francis T, Wolter M, Leri F. The effects of passive and active administration of heroin, and associated conditioned stimuli, on consolidation of object memory. Sci Rep 2022; 12:20351. [PMID: 36437288 PMCID: PMC9701675 DOI: 10.1038/s41598-022-24585-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 11/17/2022] [Indexed: 11/28/2022] Open
Abstract
Mode of administration (i.e., active vs passive) could influence the modulatory action that drugs of abuse exert on memory consolidation. Similarly, drug conditioned stimuli modulate memory consolidation and, therefore, acquisition and extinction of this conditioned response could also be influenced by mode of drug administration. Exploring these questions in male Sprague-Dawley rats, Study 1 assessed memory modulation by post-training 0, 0.3 and 1 mg/kg heroin injected subcutaneously in operant chambers (i.e., drug conditioned context). Study 2 asked a similar question but in rats trained to self-administer 0.05 mg/kg/infusion heroin intravenously, as well as in rats that received identical amounts of intravenous heroin but passively, using a yoked design. The period of heroin exposure was followed by repeated drug-free confinement in the conditioned context, and by sessions during which responses on the active lever had no scheduled consequences. Study 2 also included a cue-induced reinstatement session during which lever responses reactivated a light cue previously paired with intravenous heroin infusions. The post-training effects of injected/self-administered/yoked heroin, extinction and reinstatement sessions on memory consolidation were tested using the object location memory task. It was found that post-sample heroin enhanced memory in injected and yoked, but not self-administering, rats. However, post-sample exposure to the heroin cues (i.e., context or/and light cue) modulated memory equally in all groups. Taken together, these data support the conclusion that mode of administration impacts the cognitive consequences of exposure to drugs but not of environmental stimuli linked to their reinforcing effects.
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Affiliation(s)
- Travis Francis
- grid.34429.380000 0004 1936 8198Department of Psychology and Neuroscience Specialization, University of Guelph, 50 Stone Road East, Guelph, ON N1G 1Y4 Canada
| | - Michael Wolter
- grid.34429.380000 0004 1936 8198Department of Psychology and Neuroscience Specialization, University of Guelph, 50 Stone Road East, Guelph, ON N1G 1Y4 Canada
| | - Francesco Leri
- grid.34429.380000 0004 1936 8198Department of Psychology and Neuroscience Specialization, University of Guelph, 50 Stone Road East, Guelph, ON N1G 1Y4 Canada
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126
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Millar PR, Balota DA. Wakeful Rest Benefits Recall, but Not Recognition, of Incidentally Encoded Memory Stimuli in Younger and Older Adults. Brain Sci 2022; 12:brainsci12121609. [PMID: 36552069 PMCID: PMC9775546 DOI: 10.3390/brainsci12121609] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/10/2022] [Accepted: 11/16/2022] [Indexed: 11/25/2022] Open
Abstract
Older adults exhibit deficits in episodic memory tasks, which have often been attributed to encoding or retrieval deficits, with little attention to consolidation mechanisms. More recently, researchers have attempted to measure consolidation in the context of a behavioral experiment using the wakeful rest paradigm (i.e., a brief, quiet period of minimal stimulation, which facilitates memory performance, compared to a distractor task). Critically, older adults might not produce this effect, given established age differences in other episodic memory processes and mind-wandering. In three experiments, we directly compared younger and older adults in modified versions of the wakeful rest paradigm. Critically, we utilized incidental encoding procedures (all experiments) and abstract shape stimuli (in Experiment 3) to limit the possibility of retrieval practice or maintenance rehearsal as potential confounding mechanisms in producing the wakeful rest effect. Wakeful rest reliably and equally benefited recall of incidentally encoded words in both younger and older adults. In contrast, wakeful rest had no benefit for standard accuracy measures of recognition performance in verbal stimuli, although there was an effect in response latencies for non-verbal stimuli. Overall, these results suggest that the benefits of wakeful rest on episodic retrieval are preserved across age groups, and hence support age-independence in potential consolidation mechanisms as measured by wakeful rest. Further, these benefits do not appear to be dependent on the intentionality of encoding or variations in distractor task types. Finally, the lack of wakeful rest benefits on recognition performance might be driven by theoretical constraints on the effect or methodological limitations of recognition memory testing in the current paradigm.
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Affiliation(s)
- Peter R. Millar
- Department of Neurology, Washington University in St. Louis, St. Louis, MO 63110, USA
- Correspondence:
| | - David A. Balota
- Department of Neurology, Washington University in St. Louis, St. Louis, MO 63110, USA
- Department of Psychological & Brain Sciences, Washington University in St. Louis, St. Louis, MO 63130, USA
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127
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Alsharif AH, Salleh NZM, Al-Zahrani SA, Khraiwish A. Consumer Behaviour to Be Considered in Advertising: A Systematic Analysis and Future Agenda. Behav Sci (Basel) 2022; 12:bs12120472. [PMID: 36546955 PMCID: PMC9774318 DOI: 10.3390/bs12120472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/28/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
In the past decade, neurophysiological and physiological tools have been used to explore consumer behaviour toward advertising. The studies into brain processes (e.g., emotions, motivation, reward, attention, perception, and memory) toward advertising are scant, and remain unclear in the academic literature. To fill the gap in the literature, this study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol to extract relevant articles. It extracted and analysed 76 empirical articles from the Web of Science (WoS) database from 2009-2020. The findings revealed that the inferior frontal gyrus was associated with pleasure, while the middle temporal gyrus correlated with displeasure of advertising. Meanwhile, the right superior-temporal is related to high arousal and the right middle-frontal-gyrus is linked to low arousal toward advertisement campaigns. The right prefrontal-cortex (PFC) is correlated with withdrawal behaviour, and the left PFC is linked to approach behaviour. For the reward system, the ventral striatum has a main role in the reward system. It has also been found that perception is connected to the orbitofrontal cortex (OFC) and ventromedial (Vm) PFC. The study's findings provide a profound overview of the importance of brain processes such as emotional processes, reward, motivation, cognitive processes, and perception in advertising campaigns such as commercial, social initiative, and public health.
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Affiliation(s)
- Ahmed H. Alsharif
- Azman Hashim International Business School, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
- Correspondence:
| | - Nor Zafir Md Salleh
- Azman Hashim International Business School, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - Shaymah Ahmed Al-Zahrani
- Department of Economic & Finance, College of Business Administration, Taif University, Taif 21944, Saudi Arabia
| | - Ahmad Khraiwish
- Department of Marketing, Faculty of Business, Applied Science Private University (ASU), Amman 11931, Jordan
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128
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Moscovitch M, Gilboa A. Has the concept of systems consolidation outlived its usefulness? Identification and evaluation of premises underlying systems consolidation. Fac Rev 2022; 11:33. [PMID: 36532709 PMCID: PMC9720899 DOI: 10.12703/r/11-33] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023] Open
Abstract
Systems consolidation has mostly been treated as a neural construct defined by the time-dependent change in memory representation from the hippocampus (HPC) to other structures, primarily the neocortex. Here, we identify and evaluate the explicit and implicit premises that underlie traditional or standard models and theories of systems consolidation based on evidence from research on humans and other animals. We use the principle that changes in neural representation over time and experience are accompanied by corresponding changes in psychological representations, and vice versa, to argue that each of the premises underlying traditional or standard models and theories of systems consolidation is found wanting. One solution is to modify or abandon the premises or theories and models. This is reflected in moderated models of systems consolidation that emphasize the early role of the HPC in training neocortical memories until they stabilize. The fault, however, may lie in the very concept of systems consolidation and its defining feature. We propose that the concept be replaced by one of memory systems reorganization, which does not carry the theoretical baggage of systems consolidation and is flexible enough to capture the dynamic nature of memory from inception to very long-term retention and retrieval at a psychological and neural level. The term "memory system reorganization" implies that memory traces are not fixed, even after they are presumably consolidated. Memories can continue to change as a result of experience and interactions among memory systems across the lifetime. As will become clear, hippocampal training of neocortical memories is only one type of such interaction, and not always the most important one, even at inception. We end by suggesting some principles of memory reorganization that can help guide research on dynamic memory processes that capture corresponding changes in memory at the psychological and neural levels.
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Affiliation(s)
- Morris Moscovitch
- Department of Psychology, University of Toronto, Toronto, ON, Canada
- Rotman Research Institute, Baycrest, Toronto, ON, Canada
| | - Asaf Gilboa
- Department of Psychology, University of Toronto, Toronto, ON, Canada
- Rotman Research Institute, Baycrest, Toronto, ON, Canada
- Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
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129
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Shen R, Jiang Y, Li Z, Tian J, Li S, Li T, Chen Q. Near-Infrared Artificial Optical Synapse Based on the P(VDF-TrFE)-Coated InAs Nanowire Field-Effect Transistor. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8247. [PMID: 36431733 PMCID: PMC9698720 DOI: 10.3390/ma15228247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/27/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Optical synapse is the basic component for optical neuromorphic computing and is attracting great attention, mainly due to its great potential in many fields, such as image recognition, artificial intelligence and artificial visual perception systems. However, optical synapse with infrared (IR) response has rarely been reported. InAs nanowires (NWs) have a direct narrow bandgap and a large surface to volume ratio, making them a promising material for IR detection. Here, we demonstrate a near-infrared (NIR) (750 to 1550 nm) optical synapse for the first time based on a poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE))-coated InAs NW field-effect transistor (FET). The responsivity of the P(VDF-TrFE)-coated InAs NW FET reaches 839.3 A/W under 750 nm laser illumination, demonstrating the advantage of P(VDF-TrFE) coverage. The P(VDF-TrFE)-coated InAs NW device exhibits optical synaptic behaviors in response to NIR light pulses, including excitatory postsynaptic current (EPSC), paired-pulse facilitation (PPF) and a transformation from short-term plasticity (STP) to long-term plasticity (LTP). The working mechanism is attributed to the polarization effect in the ferroelectric P(VDF-TrFE) layer, which dominates the trapping and de-trapping characteristics of photogenerated holes. These findings have significant implications for the development of artificial neural networks.
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Affiliation(s)
- Rui Shen
- Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
| | - Yifan Jiang
- Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
| | - Zhiwei Li
- Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
| | - Jiamin Tian
- Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
| | - Shuo Li
- Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
| | - Tong Li
- Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Qing Chen
- Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
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130
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Cao-Lei L, Saumier D, Fortin J, Brunet A. A narrative review of the epigenetics of post-traumatic stress disorder and post-traumatic stress disorder treatment. Front Psychiatry 2022; 13:857087. [PMID: 36419982 PMCID: PMC9676221 DOI: 10.3389/fpsyt.2022.857087] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 09/28/2022] [Indexed: 11/09/2022] Open
Abstract
Epigenetic research in post-traumatic stress disorder (PTSD) is essential, given that environmental stressors and fear play such a crucial role in its development. As such, it may provide a framework for understanding individual differences in the prevalence of the disorder and in treatment response. This paper reviews the epigenetic markers associated with PTSD and its treatment, including candidate genes and epigenome-wide studies. Because the etiopathogenesis of PTSD rests heavily on learning and memory, we also draw upon animal neuroepigenetic research on the acquisition, update and erasure of fear memory, focusing on the mechanisms associated with memory reconsolidation. Reconsolidation blockade (or impairment) treatment in PTSD has been studied in clinical trials and, from a neurological perspective, may hold promise for identifying epigenetic markers of successful therapy. We conclude this paper by discussing several key considerations and challenges in epigenetic research on PTSD in humans.
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Affiliation(s)
- Lei Cao-Lei
- Research Center of the Douglas Mental Health University Institute (CIUSSS-ODIM), Montreal, QC, Canada
| | - Daniel Saumier
- Research Center of the Douglas Mental Health University Institute (CIUSSS-ODIM), Montreal, QC, Canada
| | - Justine Fortin
- Research Center of the Douglas Mental Health University Institute (CIUSSS-ODIM), Montreal, QC, Canada
- Department of Psychology, Université du Québec à Montréal, Montreal, QC, Canada
| | - Alain Brunet
- Research Center of the Douglas Mental Health University Institute (CIUSSS-ODIM), Montreal, QC, Canada
- Department of Psychiatry, McGill University, Montreal, QC, Canada
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131
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Xin C, Chen Y, Zhang M, Guo Y, Hu J. The effect of emotional target and context on the aftereffects of prospective memory. CURRENT PSYCHOLOGY 2022. [DOI: 10.1007/s12144-022-03907-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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132
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A short-term memory trace persists for days in the mouse hippocampus. Commun Biol 2022; 5:1168. [PMID: 36329137 PMCID: PMC9633825 DOI: 10.1038/s42003-022-04167-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022] Open
Abstract
Active recall of short-term memory (STM) is known to last for a few hours, but whether STM has long-term functions is unknown. Here we show that STM can be optogenetically retrieved at a time point during which natural recall is not possible, uncovering the long-term existence of an STM engram. Moreover, re-training within 3 days led to natural long-term recall, indicating facilitated consolidation. Inhibiting offline CA1 activity during non-rapid eye movement (NREM) sleep, N-methyl-D-aspartate receptor (NMDAR) activity, or protein synthesis after first exposure to the STM-forming event impaired the future re-exposure-facilitated consolidation, which highlights a role of protein synthesis, NMDAR and NREM sleep in the long-term storage of an STM trace. These results provide evidence that STM is not completely lost within hours and demonstrates a possible two-step STM consolidation, first long-term storage as a behaviorally inactive engram, then transformation into an active state by recurrence within 3 days. Short-term memory (STM) forms a protein synthesis-, NMDAR- and NREM sleep-dependent engram which lasts at least 3 days in the mouse hippocampus following a novel object location task, suggesting that STM is not completely lost within hours.
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133
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Manios TK, Mattia D, Bird MR. Fouling of polyethersulphone ultrafiltration membranes during the decaffeination of ground coffee brews. FOOD AND BIOPRODUCTS PROCESSING 2022. [DOI: 10.1016/j.fbp.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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134
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Lei X, Chen HH, Rau PLP, Dong L, Liu X. Learning in virtual reality: Effects of instruction type and emotional arousal on learning performance. LEARNING AND MOTIVATION 2022. [DOI: 10.1016/j.lmot.2022.101846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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135
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Wang SH. Lose the fear and boost the everyday memory through memory destabilisation and reconsolidation. Brain Res Bull 2022; 190:134-139. [DOI: 10.1016/j.brainresbull.2022.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/12/2022] [Accepted: 09/24/2022] [Indexed: 11/02/2022]
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136
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Abstract
This commentary is part of a special issue honoring Karim Nader and his focal role in igniting the reconsolidation field. The commentary describes in broad strokes the evolution of the field, its branches, major challenges, and future endeavors.
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Affiliation(s)
- Daniela Schiller
- Department of Neuroscience, Department of Psychiatry, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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137
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Mastrandreas P, Boglari C, Arnold A, Peter F, de Quervain DJF, Papassotiropoulos A, Stetak A. Phosphorylation of MSI-1 is implicated in the regulation of associative memory in Caenorhabditis elegans. PLoS Genet 2022; 18:e1010420. [PMID: 36223338 PMCID: PMC9555661 DOI: 10.1371/journal.pgen.1010420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/09/2022] [Indexed: 11/07/2022] Open
Abstract
The Musashi family of RNA-binding proteins controls several biological processes including stem cell maintenance, cell division and neural function. Previously, we demonstrated that the C. elegans Musashi ortholog, msi-1, regulates forgetting via translational repression of the Arp2/3 actin-branching complex. However, the mechanisms controlling MSI-1 activity during the regulation of forgetting are currently unknown. Here we investigated the effects of protein phosphorylation on MSI-1 activity. We showed that MSI-1 function is likely controlled by alterations of its activity rather than its expression levels. Furthermore, we found that MSI-1 is phosphorylated and using mass spectrometry we identified MSI-1 phosphorylation at three residues (T18, S19 and S34). CRISPR-based manipulations of MSI-1 phosphorylation sites revealed that phosphorylation is necessary for MSI-1 function in both short- and long-term aversive olfactory associative memory. Thus, our study provides insight into the mechanisms regulating memory-related MSI-1 activity and may facilitate the development of novel therapeutic approaches. Understanding neural circuits and molecular mechanisms underlying learning and memory are the major challenges of neuroscience. It is a generally accepted model that a learning event causes modification of synapses; strengthening some within a circuit and weakening others (termed “synaptic plasticity”). A plastic nervous system requires not only the ability to acquire and store but also to forget new inputs. While learning and memory is widely investigated, clear-cut evidence for mechanisms involved in forgetting is still sparse. Previously, we demonstrated the role of the protein Musashi (MSI-1) in the active regulation of forgetting in the nematode C. elegans. Here we investigated the role of protein modification (phosphorylation) as a possible regulatory mechanism of the MSI-1 protein activity. We found that MSI-1 protein is modified at different positions and all of these modifications at the protein level contribute to the correct activity of the protein leading to active forgetting of short and long-term memories.
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Affiliation(s)
- Pavlina Mastrandreas
- Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, Basel, Switzerland
- Biozentrum, Life Sciences Training Facility, University of Basel, Basel, Switzerland
| | - Csaba Boglari
- Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, Basel, Switzerland
- Biozentrum, Life Sciences Training Facility, University of Basel, Basel, Switzerland
| | - Andreas Arnold
- Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, Basel, Switzerland
- Biozentrum, Life Sciences Training Facility, University of Basel, Basel, Switzerland
| | - Fabian Peter
- Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, Basel, Switzerland
- Biozentrum, Life Sciences Training Facility, University of Basel, Basel, Switzerland
| | - Dominique J.-F. de Quervain
- Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland
- Division of Cognitive Neuroscience, Department of Psychology, University of Basel, Basel, Switzerland
- University Psychiatric Clinics, University of Basel, Basel, Switzerland
| | - Andreas Papassotiropoulos
- Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, Basel, Switzerland
- Biozentrum, Life Sciences Training Facility, University of Basel, Basel, Switzerland
- University Psychiatric Clinics, University of Basel, Basel, Switzerland
| | - Attila Stetak
- Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, Basel, Switzerland
- Biozentrum, Life Sciences Training Facility, University of Basel, Basel, Switzerland
- University Psychiatric Clinics, University of Basel, Basel, Switzerland
- * E-mail:
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138
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Human cerebellum and corticocerebellar connections involved in emotional memory enhancement. Proc Natl Acad Sci U S A 2022; 119:e2204900119. [PMID: 36191198 PMCID: PMC9564100 DOI: 10.1073/pnas.2204900119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Enhanced memory for emotional stimuli is crucial for survival, but it may also contribute to the development and maintenance of fear-related disorders in case of highly aversive experiences. This large-scale functional brain imaging study identifies the cerebellum and cerebellar–cerebral connections involved in the phenomenon of superior memory for emotionally arousing visual information. These findings expand knowledge on the role of the cerebellum in complex cognitive and emotional processes and may be relevant for the understanding of psychiatric disorders with aberrant emotional circuitry, such as posttraumatic stress disorder or autism spectrum disorder. Emotional information is better remembered than neutral information. Extensive evidence indicates that the amygdala and its interactions with other cerebral regions play an important role in the memory-enhancing effect of emotional arousal. While the cerebellum has been found to be involved in fear conditioning, its role in emotional enhancement of episodic memory is less clear. To address this issue, we used a whole-brain functional MRI approach in 1,418 healthy participants. First, we identified clusters significantly activated during enhanced memory encoding of negative and positive emotional pictures. In addition to the well-known emotional memory–related cerebral regions, we identified a cluster in the cerebellum. We then used dynamic causal modeling and identified several cerebellar connections with increased connection strength corresponding to enhanced emotional memory, including one to a cluster covering the amygdala and hippocampus, and bidirectional connections with a cluster covering the anterior cingulate cortex. The present findings indicate that the cerebellum is an integral part of a network involved in emotional enhancement of episodic memory.
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139
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The power of negative and positive episodic memories. COGNITIVE, AFFECTIVE, & BEHAVIORAL NEUROSCIENCE 2022; 22:869-903. [PMID: 35701665 PMCID: PMC9196161 DOI: 10.3758/s13415-022-01013-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 05/04/2022] [Indexed: 11/18/2022]
Abstract
The power of episodic memories is that they bring a past moment into the present, providing opportunities for us to recall details of the experiences, reframe or update the memory, and use the retrieved information to guide our decisions. In these regards, negative and positive memories can be especially powerful: Life’s highs and lows are disproportionately represented in memory, and when they are retrieved, they often impact our current mood and thoughts and influence various forms of behavior. Research rooted in neuroscience and cognitive psychology has historically focused on memory for negative emotional content. Yet the study of autobiographical memories has highlighted the importance of positive emotional memories, and more recently, cognitive neuroscience methods have begun to clarify why positive memories may show powerful relations to mental wellbeing. Here, we review the models that have been proposed to explain why emotional memories are long-lasting (durable) and likely to be retrieved (accessible), describing how in overlapping—but distinctly separable—ways, positive and negative memories can be easier to retrieve, and more likely to influence behavior. We end by identifying potential implications of this literature for broader topics related to mental wellbeing, education, and workplace environments.
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140
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Dong TN, Kramár EA, Beardwood JH, Al-Shammari A, Wood MA, Keiser AA. Temporal endurance of exercise-induced benefits on hippocampus-dependent memory and synaptic plasticity in female mice. Neurobiol Learn Mem 2022; 194:107658. [PMID: 35811066 PMCID: PMC9901197 DOI: 10.1016/j.nlm.2022.107658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/20/2022] [Accepted: 07/04/2022] [Indexed: 02/08/2023]
Abstract
Exercise facilitates hippocampal neurogenesis and neuroplasticity that in turn, promotes cognitive function. Our previous studies have demonstrated that in male mice, voluntary exercise enables hippocampus-dependent learning in conditions that are normally subthreshold for long-term memory formation in sedentary animals. Such cognitive enhancement can be maintained long after exercise has ceased and can be re-engaged by a subsequent subthreshold exercise session, suggesting exercise-induced benefits are temporally dynamic. In females, the extent to which the benefits of exercise can be maintained and the mechanisms underlying this maintenance have yet to be defined. Here, we examined the exercise parameters required to initiate and maintain the benefits of exercise in female C57BL/6J mice. Using a subthreshold version of the hippocampus-dependent task called object-location memory (OLM) task, we show that 14d of voluntary exercise enables learning under subthreshold acquisition conditions in female mice. Following the initial exercise, a 7d sedentary delay results in diminished performance, which can be re-facilitated when animals receive 2d of reactivating exercise following the sedentary delay. Assessment of estrous cycle reveals enhanced wheel running activity during the estrus phase relative to the diestrus phase, whereas estrous phase on training or test had no effect on OLM performance. Utilizing the same exercise parameters, we demonstrate that 14d of exercise enhances long-term potentiation (LTP) in the CA1 region of the hippocampus, an effect that persists throughout the sedentary delay and following the reactivating exercise session. Previous studies have proposed exercise-induced BDNF upregulation as the mechanism underlying exercise-mediated benefits on synaptic plasticity and cognition. However, our assessment of hippocampal Bdnf mRNA expression following memory retrieval reveals no difference between exercise conditions and control, suggesting that persistent Bdnf upregulation may not be required for maintenance of exercise-induced benefits. Together, our data indicate that 14d of voluntary exercise can initiate long-lasting benefits on neuroplasticity and cognitive function in female mice, establishing the first evidence on the temporal endurance of exercise-induced benefits in females.
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Affiliation(s)
- T N Dong
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
| | - E A Kramár
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States
| | - J H Beardwood
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States
| | - A Al-Shammari
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States
| | - M A Wood
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States
| | - A A Keiser
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States.
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141
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Visser RM, Henson RN, Holmes EA. A Naturalistic Paradigm to Investigate Postencoding Neural Activation Patterns in Relation to Subsequent Voluntary and Intrusive Recall of Distressing Events. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2022; 7:960-969. [PMID: 34454167 DOI: 10.1016/j.bpsc.2021.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/20/2021] [Accepted: 08/11/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND While neuroimaging has provided insights into the formation of episodic memories in relation to voluntary memory recall, less is known about neural mechanisms that cause memories to occur involuntarily, for example, as intrusive memories of trauma. Here, we investigated brain activity shortly after viewing distressing events as a function of whether memories for those events later intruded involuntarily. The postencoding period is particularly important because it is a period when clinical interventions could be applied. METHODS A total of 32 healthy volunteers underwent functional magnetic resonance imaging while viewing distressing film clips, interspersed with 5 minutes of awake (postencoding) rest. Voluntary memories of the films were assessed using free recall and verbal and visual recognition tests after a week, while intrusive (involuntary) memories were recorded in a diary throughout that week. RESULTS When analyzing functional magnetic resonance imaging responses related to watching the films, we replicated findings that those "hotspots" (salient moments within the films) that would later become intrusive memories elicited higher activation in parts of the brain's salience network. Surprisingly, while the postencoding persistence of multivoxel correlation structures associated with entire film clips predicted subsequent voluntary recall, there was no evidence that they predicted subsequent intrusions. CONCLUSIONS Results replicate findings regarding the formation of intrusive memories during encoding and extend findings regarding the consolidation of information in postencoding rest in relation to voluntary memory. While we provided a first step using a naturalistic paradigm, further research is needed to elucidate the role of postencoding neural processes in the development of intrusive memories.
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Affiliation(s)
- Renée M Visser
- Department of Clinical Psychology, University of Amsterdam, Amsterdam, The Netherlands.
| | - Richard N Henson
- Medical Research Council Cognition and Brain Sciences Unit and Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Emily A Holmes
- Department of Psychology, Uppsala University, Uppsala, Sweden; Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
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142
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The elegant complexity of fear in non-human animals. Emerg Top Life Sci 2022; 6:445-455. [PMID: 36069657 PMCID: PMC9788375 DOI: 10.1042/etls20220001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 02/07/2023]
Abstract
Activation of the fear system is adaptive, and protects individuals from impending harm; yet, exacerbation of the fear system is at the source of anxiety-related disorders. Here, we briefly review the 'why' and 'how' of fear, with an emphasis on models that encapsulate the elegant complexity of rodents' behavioral responding in the face of impending harm, and its relevance to developing treatment interventions.
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143
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Franke LK, Miedl SF, Danböck SK, Lohse J, Liedlgruber M, Bürkner PC, Pletzer B, Wilhelm FH. Estradiol during (analogue-)trauma: Risk- or protective factor for intrusive re-experiencing? Psychoneuroendocrinology 2022; 143:105819. [PMID: 35724562 DOI: 10.1016/j.psyneuen.2022.105819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 01/06/2023]
Abstract
Intrusions, a key symptom of posttraumatic stress disorder (PTSD), can occur in the form of images but also as pain sensations. Similar to audiovisual intrusions, the frequency and persistence of pain intrusions varies greatly between individuals. In the current study, we examined whether peritraumatic circulating 17β-estradiol (E2) levels are a biologic factor associated with subsequent audiovisual (i.e., film) and pain intrusion development, and whether peritraumatic stress levels modulate this relationship. Forty-one free-cycling women participated in an ecologically informed trauma-pain-conditioning (TPC) paradigm, using trauma-films and pain as unconditioned stimuli. Independent variables were salivary peritraumatic E2 levels and stress indexed by salivary cortisol and self-reported state-anxiety during TPC. Outcomes were film- and pain-intrusions occurring during daily-life in the week following TPC and a Memory-Triggering-Task in response to conditioned stimuli 24 h after TPC. In the week after analogue-trauma, higher peritraumatic E2 levels were associated with a greater probability of experiencing film-intrusions in the beginning of the week, which switched to a lower probability toward the end of the week. This time-dependent relationship between E2 and film-intrusions only held for higher state-anxious women. In contrast, results indicated a consistent inverse relationship between peritraumatic E2 levels and pain-intrusions during daily-life and Memory-Triggering-Task. Together, these data suggest that higher peritraumatic E2 levels could be associated with lower long-term visual trauma intrusions, as well as lower pain-intrusions, and thereby possibly constitute a protective biologic factor for PTSD and potentially also for chronic pain.
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Affiliation(s)
- Laila K Franke
- Division of Clinical Psychology and Psychopathology, Department of Psychology, Paris-Lodron-University Salzburg, Salzburg, Austria.
| | - Stephan F Miedl
- Division of Clinical Psychology and Psychopathology, Department of Psychology, Paris-Lodron-University Salzburg, Salzburg, Austria
| | - Sarah K Danböck
- Division of Clinical Psychology and Psychopathology, Department of Psychology, Paris-Lodron-University Salzburg, Salzburg, Austria
| | - Johanna Lohse
- Division of Clinical Psychology and Psychopathology, Department of Psychology, Paris-Lodron-University Salzburg, Salzburg, Austria
| | - Michael Liedlgruber
- Division of Clinical Psychology and Psychopathology, Department of Psychology, Paris-Lodron-University Salzburg, Salzburg, Austria
| | | | - Belinda Pletzer
- Division of Psychoneuroendocrinology, Department of Psychology, Paris-Lodron-University Salzburg, Salzburg, Austria; Centre for Cognitive Neuroscience, Paris-Lodron-University Salzburg, Salzburg, Austria
| | - Frank H Wilhelm
- Division of Clinical Psychology and Psychopathology, Department of Psychology, Paris-Lodron-University Salzburg, Salzburg, Austria
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144
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Pilarczyk J, Sterna R, Schwertner E, Pacula B, Bartoszek M, Kuniecki M. Physiological reactions at encoding selectively predict recognition of emotional images. Biol Psychol 2022; 175:108429. [DOI: 10.1016/j.biopsycho.2022.108429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/25/2022]
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145
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Ford JH, Kim SY, Kark SM, Daley RT, Payne JD, Kensinger EA. Distinct stress-related changes in intrinsic amygdala connectivity predict subsequent positive and negative memory performance. Eur J Neurosci 2022; 56:4744-4765. [PMID: 35841177 PMCID: PMC9710194 DOI: 10.1111/ejn.15777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/16/2022] [Accepted: 05/22/2022] [Indexed: 11/29/2022]
Abstract
Experiencing stress before an event can influence how that event is later remembered. In the current study, we examine how individual differences in one's physiological response to a stressor are related to changes to underlying brain states and memory performance. Specifically, we examined how changes in intrinsic amygdala connectivity relate to positive and negative memory performance as a function of stress response, defined as a change in cortisol. Twenty-five participants underwent a social stressor before an incidental emotional memory encoding task. Cortisol samples were obtained before and after the stressor to measure individual differences in stress response. Three resting state scans (pre-stressor, post-stressor/pre-encoding and post-encoding) were conducted to evaluate pre- to post-stressor and pre- to post-encoding changes to intrinsic amygdala connectivity. Analyses examined relations between greater cortisol changes and connectivity changes. Greater cortisol increases were associated with a greater decrease in prefrontal-amygdala connectivity following the stressor and a reversal in the relation between prefrontal-amygdala connectivity and negative vs. positive memory performance. Greater cortisol increases were also associated with a greater increase in amygdala connectivity with a number of posterior sensory regions following encoding. Consistent with prior findings in non-stressed individuals, pre- to post-encoding increases in amygdala-posterior connectivity were associated with greater negative relative to positive memory performance, although this was specific to lateral rather than medial posterior regions and to participants with the greatest cortisol changes. These findings suggest that stress response is associated with changes in intrinsic connectivity that have downstream effects on the valence of remembered emotional content.
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Affiliation(s)
- Jaclyn H Ford
- Department of Psychology and Neuroscience, Boston College, Chestnut Hill, Massachusetts, USA
| | - Sara Y Kim
- Department of Psychology, University of Notre Dame, Notre Dame, Indiana, USA
| | - Sarah M Kark
- Department of Neurobiology and Behavior, Center for the Neurobiology of Learning and Memory, University of California at Irvine, Irvine, California, USA
| | - Ryan T Daley
- Department of Psychology and Neuroscience, Boston College, Chestnut Hill, Massachusetts, USA
| | - Jessica D Payne
- Department of Psychology, University of Notre Dame, Notre Dame, Indiana, USA
| | - Elizabeth A Kensinger
- Department of Psychology and Neuroscience, Boston College, Chestnut Hill, Massachusetts, USA
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146
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Maity S, Abbaspour R, Nahabedian D, Connor SA. Norepinephrine, beyond the Synapse: Coordinating Epigenetic Codes for Memory. Int J Mol Sci 2022; 23:ijms23179916. [PMID: 36077313 PMCID: PMC9456295 DOI: 10.3390/ijms23179916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/19/2022] [Accepted: 08/21/2022] [Indexed: 11/16/2022] Open
Abstract
The noradrenergic system is implicated in neuropathologies contributing to major disorders of the memory, including post-traumatic stress disorder and Alzheimer’s disease. Determining the impact of norepinephrine on cellular function and plasticity is thus essential for making inroads into our understanding of these brain conditions, while expanding our capacity for treating them. Norepinephrine is a neuromodulator within the mammalian central nervous system which plays important roles in cognition and associated synaptic plasticity. Specifically, norepinephrine regulates the formation of memory through the stimulation of β-ARs, increasing the dynamic range of synaptic modifiability. The mechanisms through which NE influences neural circuit function have been extended to the level of the epigenome. This review focuses on recent insights into how the noradrenergic recruitment of epigenetic modifications, including DNA methylation and post-translational modification of histones, contribute to homo- and heterosynaptic plasticity. These advances will be placed in the context of synaptic changes associated with memory formation and linked to brain disorders and neurotherapeutic applications.
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Affiliation(s)
- Sabyasachi Maity
- Department of Physiology, Neuroscience, and Behavioral Sciences, St. George’s University School of Medicine, True Blue FZ818, Grenada
| | - Raman Abbaspour
- Department of Biology, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
| | - David Nahabedian
- The Center for Biomedical Visualization, Department of Anatomical Sciences, St. George’s University School of Medicine, True Blue FZ818, Grenada
| | - Steven A. Connor
- Department of Biology, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
- Correspondence: ; Tel.: +1-(416)-736-2100 (ext. 33803)
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147
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Cunningham TJ, Stickgold R, Kensinger EA. Investigating the effects of sleep and sleep loss on the different stages of episodic emotional memory: A narrative review and guide to the future. Front Behav Neurosci 2022; 16:910317. [PMID: 36105652 PMCID: PMC9466000 DOI: 10.3389/fnbeh.2022.910317] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 08/03/2022] [Indexed: 11/29/2022] Open
Abstract
For two decades, sleep has been touted as one of the primary drivers for the encoding, consolidation, retention, and retrieval of episodic emotional memory. Recently, however, sleep’s role in emotional memory processing has received renewed scrutiny as meta-analyses and reviews have indicated that sleep may only contribute a small effect that hinges on the content or context of the learning and retrieval episodes. On the one hand, the strong perception of sleep’s importance in maintaining memory for emotional events may have been exacerbated by publication bias phenomena, such as the “winner’s curse” and “file drawer problem.” On the other hand, it is plausible that there are sets of circumstances that lead to consistent and reliable effects of sleep on emotional memory; these circumstances may depend on factors such as the placement and quality of sleep relative to the emotional experience, the content and context of the emotional experience, and the probes and strategies used to assess memory at retrieval. Here, we review the literature on how sleep (and sleep loss) influences each stage of emotional episodic memory. Specifically, we have separated previous work based on the placement of sleep and sleep loss in relation to the different stages of emotional memory processing: (1) prior to encoding, (2) immediately following encoding during early consolidation, (3) during extended consolidation, separated from initial learning, (4) just prior to retrieval, and (5) post-retrieval as memories may be restructured and reconsolidated. The goals of this review are three-fold: (1) examine phases of emotional memory that sleep may influence to a greater or lesser degree, (2) explicitly identify problematic overlaps in traditional sleep–wake study designs that are preventing the ability to better disentangle the potential role of sleep in the different stages of emotional memory processing, and (3) highlight areas for future research by identifying the stages of emotional memory processing in which the effect of sleep and sleep loss remains under-investigated. Here, we begin the task of better understanding the contexts and factors that influence the relationship between sleep and emotional memory processing and aim to be a valuable resource to facilitate hypothesis generation and promote important future research.
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Affiliation(s)
- Tony J. Cunningham
- Center for Sleep and Cognition, Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA, United States
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, United States
- Department of Psychology and Neuroscience, Boston College, Chestnut Hill, MA, United States
- *Correspondence: Tony J. Cunningham,
| | - Robert Stickgold
- Center for Sleep and Cognition, Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA, United States
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, United States
| | - Elizabeth A. Kensinger
- Department of Psychology and Neuroscience, Boston College, Chestnut Hill, MA, United States
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148
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Sened H, Zilcha-Mano S, Shamay-Tsoory S. Inter-brain plasticity as a biological mechanism of change in psychotherapy: A review and integrative model. Front Hum Neurosci 2022; 16:955238. [PMID: 36092652 PMCID: PMC9458846 DOI: 10.3389/fnhum.2022.955238] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 08/04/2022] [Indexed: 11/26/2022] Open
Abstract
Recent models of psychopathology and psychotherapy highlight the importance of interpersonal factors. The current review offers a biological perspective on these interpersonal processes by examining inter-brain synchrony—the coupling of brain activity between people interacting with one another. High inter-brain synchrony is associated with better relationships in therapy and in daily life, while deficits in the ability to achieve inter-brain synchrony are associated with a variety of psychological and developmental disorders. The review suggests that therapy improves patients’ ability to achieve such synchrony through inter-brain plasticity—a process by which recurring exposure to high inter-brain synchrony leads to lasting change in a person’s overall ability to synchronize. Therapeutic sessions provide repeated situations with high inter-brain synchrony. This can lead to a long-term increase in the ability to synchronize, first with the therapist, then generalized to other interpersonal relationships, ultimately leading to symptom reduction. The proposed inter-brain plasticity model offers a novel biological framework for understanding relational change in psychotherapy and its links to various forms of psychopathology and provides testable hypotheses for future research. Understanding this mechanism may help improve existing psychotherapy methods and develop new ones.
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149
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Asok A. Editorial: Brain modifications in response to stress: From cellular to circuit reorganization. Front Syst Neurosci 2022; 16:1000279. [PMID: 36071745 PMCID: PMC9442037 DOI: 10.3389/fnsys.2022.1000279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 08/03/2022] [Indexed: 11/13/2022] Open
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150
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Zhang S, Xie L, Cui Y, Carone BR, Chen Y. Detecting Fear-Memory-Related Genes from Neuronal scRNA-seq Data by Diverse Distributions and Bhattacharyya Distance. Biomolecules 2022; 12:biom12081130. [PMID: 36009024 PMCID: PMC9405875 DOI: 10.3390/biom12081130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/12/2022] [Accepted: 08/15/2022] [Indexed: 11/16/2022] Open
Abstract
The detection of differentially expressed genes (DEGs) is one of most important computational challenges in the analysis of single-cell RNA sequencing (scRNA-seq) data. However, due to the high heterogeneity and dropout noise inherent in scRNAseq data, challenges in detecting DEGs exist when using a single distribution of gene expression levels, leaving much room to improve the precision and robustness of current DEG detection methods. Here, we propose the use of a new method, DEGman, which utilizes several possible diverse distributions in combination with Bhattacharyya distance. DEGman can automatically select the best-fitting distributions of gene expression levels, and then detect DEGs by permutation testing of Bhattacharyya distances of the selected distributions from two cell groups. Compared with several popular DEG analysis tools on both large-scale simulation data and real scRNA-seq data, DEGman shows an overall improvement in the balance of sensitivity and precision. We applied DEGman to scRNA-seq data of TRAP; Ai14 mouse neurons to detect fear-memory-related genes that are significantly differentially expressed in neurons with and without fear memory. DEGman detected well-known fear-memory-related genes and many novel candidates. Interestingly, we found 25 DEGs in common in five neuron clusters that are functionally enriched for synaptic vesicles, indicating that the coupled dynamics of synaptic vesicles across in neurons plays a critical role in remote memory formation. The proposed method leverages the advantage of the use of diverse distributions in DEG analysis, exhibiting better performance in analyzing composite scRNA-seq datasets in real applications.
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Affiliation(s)
- Shaoqiang Zhang
- Department of Computer Science, College of Computer and Information Engineering, Tianjin Normal University, Tianjin 300387, China
| | - Linjuan Xie
- Department of Computer Science, College of Computer and Information Engineering, Tianjin Normal University, Tianjin 300387, China
| | - Yaxuan Cui
- Department of Computer Science, College of Computer and Information Engineering, Tianjin Normal University, Tianjin 300387, China
| | - Benjamin R. Carone
- Department of Biology and Biomedical Sciences, Rowan University, Glassboro, NJ 08028, USA
| | - Yong Chen
- Department of Biology and Biomedical Sciences, Rowan University, Glassboro, NJ 08028, USA
- Correspondence: ; Tel.: +1-856-256-4500
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