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Piquet R, Faugère A, Parkes SL. A hippocampo-cortical pathway detects changes in the validity of an action as a predictor of reward. Curr Biol 2024; 34:24-35.e4. [PMID: 38101404 DOI: 10.1016/j.cub.2023.11.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/06/2023] [Accepted: 11/16/2023] [Indexed: 12/17/2023]
Abstract
Much research has been dedicated to understanding the psychological and neural bases of goal-directed action, yet the relationship between context and goal-directed action is not well understood. Here, we used excitotoxic lesions, chemogenetics, and circuit-specific manipulations to demonstrate the role of the ventral hippocampus (vHPC) in contextual learning that supports sensitivity to action-outcome contingencies, a hallmark of goal-directed action. We found that chemogenetic inhibition of the ventral, but not dorsal, hippocampus attenuated sensitivity to instrumental contingency degradation. We then tested the hypothesis that this deficit was due to an inability to discern the relative validity of the action compared with the context as a predictor of reward. Using latent inhibition and Pavlovian context conditioning, we confirm that degradation of action-outcome contingencies relies on intact context-outcome learning and show that this learning is dependent on vHPC. Finally, we show that chemogenetic inhibition of vHPC terminals in the medial prefrontal cortex also impairs both instrumental contingency degradation and context-outcome learning. These results implicate a hippocampo-cortical pathway in adapting to changes in instrumental contingencies and indicate that the psychological basis of this deficit is an inability to learn the predictive value of the context. Our findings contribute to a broader understanding of the neural bases of goal-directed action and its contextual regulation.
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Affiliation(s)
- Robin Piquet
- Univ. Bordeaux, CNRS, INCIA, UMR 5287, 33000 Bordeaux, France
| | | | - Shauna L Parkes
- Univ. Bordeaux, CNRS, INCIA, UMR 5287, 33000 Bordeaux, France.
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2
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Piquet R, Faugère A, Parkes SL. Contribution of dorsal versus ventral hippocampus to the hierarchical modulation of goal-directed actions in rats. Eur J Neurosci 2023; 58:3737-3750. [PMID: 37697949 DOI: 10.1111/ejn.16143] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/21/2023] [Accepted: 08/28/2023] [Indexed: 09/13/2023]
Abstract
Adaptive behaviour often necessitates that animals learn about events in a manner that is specific to a particular context or environment. These hierarchical organisations allow the animal to decide which action is the most appropriate when faced with ambiguous or conflicting possibilities. This study examined the role of hippocampus in enabling animals to use the context to guide action selection. We used a hierarchical instrumental outcome devaluation task in which male rats learn that the context provides information about the unique action-outcome relations that are in effect. We first confirmed that rats encode and use hierarchical context-(action-outcome) relations. We then show that chemogenetic inhibition of ventral hippocampus impairs both the encoding and retrieval of these associations, while inhibition of dorsal hippocampus impairs only the retrieval. Importantly, neither dorsal nor ventral hippocampus was required for goal-directed behaviour per se as these impairments only emerged when rats were forced to use the context to identify the current action-outcome relationships. These findings are discussed with respect to the role of the hippocampus and its broader circuitry in the contextual modulation of goal-directed behaviour and the importance of hierarchical associations in flexible behaviour.
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Affiliation(s)
- Robin Piquet
- University of Bordeaux, CNRS, INCIA, UMR 5287, Bordeaux, France
| | | | - Shauna L Parkes
- University of Bordeaux, CNRS, INCIA, UMR 5287, Bordeaux, France
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3
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Lee SM, Shin J, Lee I. Significance of visual scene-based learning in the hippocampal systems across mammalian species. Hippocampus 2022; 33:505-521. [PMID: 36458555 DOI: 10.1002/hipo.23483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/26/2022] [Accepted: 11/19/2022] [Indexed: 12/04/2022]
Abstract
The hippocampus and its associated cortical regions in the medial temporal lobe play essential roles when animals form a cognitive map and use it to achieve their goals. As the nature of map-making involves sampling different local views of the environment and putting them together in a spatially cohesive way, visual scenes are essential ingredients in the formative process of cognitive maps. Visual scenes also serve as important cues during information retrieval from the cognitive map. Research in humans has shown that there are regions in the brain that selectively process scenes and that the hippocampus is involved in scene-based memory tasks. The neurophysiological correlates of scene-based information processing in the hippocampus have been reported as "spatial view cells" in nonhuman primates. Like primates, it is widely accepted that rodents also use visual scenes in their background for spatial navigation and other kinds of problems. However, in rodents, it is not until recently that researchers examined the neural correlates of the hippocampus from the perspective of visual scene-based information processing. With the advent of virtual reality (VR) systems, it has been demonstrated that place cells in the hippocampus exhibit remarkably similar firing correlates in the VR environment compared with that of the real-world environment. Despite some limitations, the new trend of studying hippocampal functions in a visually controlled environment has the potential to allow investigation of the input-output relationships of network functions and experimental testing of traditional computational predictions more rigorously by providing well-defined visual stimuli. As scenes are essential for navigation and episodic memory in humans, further investigation of the rodents' hippocampal systems in scene-based tasks will provide a critical functional link across different mammalian species.
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Affiliation(s)
- Su-Min Lee
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Jhoseph Shin
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Inah Lee
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
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4
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Lee SM, Jin SW, Park SB, Park EH, Lee CH, Lee HW, Lim HY, Yoo SW, Ahn JR, Shin J, Lee SA, Lee I. Goal-directed interaction of stimulus and task demand in the parahippocampal region. Hippocampus 2021; 31:717-736. [PMID: 33394547 PMCID: PMC8359334 DOI: 10.1002/hipo.23295] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 12/05/2020] [Accepted: 12/12/2020] [Indexed: 11/10/2022]
Abstract
The hippocampus and parahippocampal region are essential for representing episodic memories involving various spatial locations and objects, and for using those memories for future adaptive behavior. The “dual‐stream model” was initially formulated based on anatomical characteristics of the medial temporal lobe, dividing the parahippocampal region into two streams that separately process and relay spatial and nonspatial information to the hippocampus. Despite its significance, the dual‐stream model in its original form cannot explain recent experimental results, and many researchers have recognized the need for a modification of the model. Here, we argue that dividing the parahippocampal region into spatial and nonspatial streams a priori may be too simplistic, particularly in light of ambiguous situations in which a sensory cue alone (e.g., visual scene) may not allow such a definitive categorization. Upon reviewing evidence, including our own, that reveals the importance of goal‐directed behavioral responses in determining the relative involvement of the parahippocampal processing streams, we propose the Goal‐directed Interaction of Stimulus and Task‐demand (GIST) model. In the GIST model, input stimuli such as visual scenes and objects are first processed by both the postrhinal and perirhinal cortices—the postrhinal cortex more heavily involved with visual scenes and perirhinal cortex with objects—with relatively little dependence on behavioral task demand. However, once perceptual ambiguities are resolved and the scenes and objects are identified and recognized, the information is then processed through the medial or lateral entorhinal cortex, depending on whether it is used to fulfill navigational or non‐navigational goals, respectively. As complex sensory stimuli are utilized for both navigational and non‐navigational purposes in an intermixed fashion in naturalistic settings, the hippocampus may be required to then put together these experiences into a coherent map to allow flexible cognitive operations for adaptive behavior to occur.
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Affiliation(s)
- Su-Min Lee
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Seung-Woo Jin
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Seong-Beom Park
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Eun-Hye Park
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Choong-Hee Lee
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Hyun-Woo Lee
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Heung-Yeol Lim
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Seung-Woo Yoo
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Brain Institute, Florida Atlantic University, Jupiter, Florida, USA
| | - Jae Rong Ahn
- Department of Biology, Tufts University, Medford, Massachusetts, USA
| | - Jhoseph Shin
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
| | - Sang Ah Lee
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Inah Lee
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, South Korea
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5
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Yang C, Naya Y. Hippocampal cells integrate past memory and present perception for the future. PLoS Biol 2020; 18:e3000876. [PMID: 33206640 PMCID: PMC7673575 DOI: 10.1371/journal.pbio.3000876] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 09/22/2020] [Indexed: 11/18/2022] Open
Abstract
The ability to use stored information in a highly flexible manner is a defining feature of the declarative memory system. However, the neuronal mechanisms underlying this flexibility are poorly understood. To address this question, we recorded single-unit activity from the hippocampus of 2 nonhuman primates performing a newly devised task requiring the monkeys to retrieve long-term item-location association memory and then use it flexibly in different circumstances. We found that hippocampal neurons signaled both mnemonic information representing the retrieved location and perceptual information representing the external circumstance. The 2 signals were combined at a single-neuron level to construct goal-directed information by 3 sequentially occurring neuronal operations (e.g., convergence, transference, and targeting) in the hippocampus. Thus, flexible use of knowledge may be supported by the hippocampal constructive process linking memory and perception, which may fit the mnemonic information into the current situation to present manageable information for a subsequent action. This study reveals that three neuronal operations in the macaque hippocampus combine retrieved memory and incoming perceptual information to construct goal-directed information; this constructive memory process may equip us to use past knowledge flexibly according to the current situation.
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Affiliation(s)
- Cen Yang
- School of Psychological and Cognitive Sciences, Peking University, Beijing, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
- Center for Life Sciences, Peking University, Beijing, China
| | - Yuji Naya
- School of Psychological and Cognitive Sciences, Peking University, Beijing, China
- Center for Life Sciences, Peking University, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
- Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China
- * E-mail:
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Pasparakis E, Koiliari E, Zouraraki C, Tsapakis EM, Roussos P, Giakoumaki S, Bitsios P. The effects of the CACNA1C rs1006737 A/G on affective startle modulation in healthy males. Eur Psychiatry 2020; 30:492-8. [DOI: 10.1016/j.eurpsy.2015.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Revised: 03/04/2015] [Accepted: 03/04/2015] [Indexed: 01/01/2023] Open
Abstract
AbstractBackground:The CACNA1C rs1006737 risk A allele has been associated with affective psychoses and functional studies indicate that it is associated with increased hippocampal/amygdala activity during emotional face-processing. Here we studied the impact of the risk A allele on affective startle modulation.Methods:Hundred and ninety-four healthy males stratified for their CACNA1C rs1006737 genotype (GG:111, GA:67, AA:16) were presented with 18 pleasant, 18 unpleasant and 18 neutral pictures with acoustic probes (104 dB) occurring during 12 pictures in each affective category. Baseline startle was assessed during blank screens. State mood was self-rated on arrival, pre- and post-test and the emotional valence and arousal of affective pictures at post-test.Results:Relative to the other genotypes, risk A allele homozygotes presented with higher anxiety/negative affect at pre-test, reduced and exaggerated physiological responses to the pleasant and negative pictures respectively, negative affect with reduced arousal at post-test and rated the affective pictures as less arousing and inconsistently to their physiological responses (all P < 0.05). Sustained contextual negative mood predicted reduced baseline and affective startle reactivity in the AA group.Conclusions:Healthy homozygous males for the risk A allele appear to have marked contextual sensitivity, affective reactivity akin to anxiety and depression and inefficient emotional appraisal. Our findings provide phenotypic detail of the CACNA1C AA genotype in non-symptomatic individuals, which suggest primary effects in emotional circuitry, consistent with previously documented alterations in hippocampal/amygdala processing.
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Popa T, Morris LS, Hunt R, Deng ZD, Horovitz S, Mente K, Shitara H, Baek K, Hallett M, Voon V. Modulation of Resting Connectivity Between the Mesial Frontal Cortex and Basal Ganglia. Front Neurol 2019; 10:587. [PMID: 31275221 PMCID: PMC6593304 DOI: 10.3389/fneur.2019.00587] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/17/2019] [Indexed: 12/13/2022] Open
Abstract
Background: The mesial prefrontal cortex, cingulate cortex, and the ventral striatum are key nodes of the human mesial fronto-striatal circuit involved in decision-making and executive function and pathological disorders. Here we ask whether deep wide-field repetitive transcranial magnetic stimulation (rTMS) targeting the mesial prefrontal cortex (MPFC) influences resting state functional connectivity. Methods: In Study 1, we examined functional connectivity using resting state multi-echo and independent components analysis in 154 healthy subjects to characterize default connectivity in the MPFC and mid-cingulate cortex (MCC). In Study 2, we used inhibitory, 1 Hz deep rTMS with the H7-coil targeting MPFC and dorsal anterior cingulate (dACC) in a separate group of 20 healthy volunteers and examined pre- and post-TMS functional connectivity using seed-based and independent components analysis. Results: In Study 1, we show that MPFC and MCC have distinct patterns of functional connectivity with MPFC-ventral striatum showing negative, whereas MCC-ventral striatum showing positive functional connectivity. Low-frequency rTMS decreased functional connectivity of MPFC and dACC with the ventral striatum. We further showed enhanced connectivity between MCC and ventral striatum. Conclusions: These findings emphasize how deep inhibitory rTMS using the H7-coil can influence underlying network functional connectivity by decreasing connectivity of the targeted MPFC regions, thus potentially enhancing response inhibition and decreasing drug-cue reactivity processes relevant to addictions. The unexpected finding of enhanced default connectivity between MCC and ventral striatum may be related to the decreased influence and connectivity between the MPFC and MCC. These findings are highly relevant to the treatment of disorders relying on the mesio-prefrontal-cingulo-striatal circuit.
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Affiliation(s)
- Traian Popa
- Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Laurel S. Morris
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
| | - Rachel Hunt
- Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
- Oakland University William Beaumont School of Medicine, Rochester, MI, United States
| | - Zhi-De Deng
- Non-Invasive Neuromodulation Unit, Experimental Therapeutics & Pathophysiology Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, United States
- Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, United States
| | - Silvina Horovitz
- Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Karin Mente
- Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Hitoshi Shitara
- Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Kwangyeol Baek
- Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Mark Hallett
- Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Valerie Voon
- Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom
- Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
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Asok A, Kandel ER, Rayman JB. The Neurobiology of Fear Generalization. Front Behav Neurosci 2019; 12:329. [PMID: 30697153 PMCID: PMC6340999 DOI: 10.3389/fnbeh.2018.00329] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 12/13/2018] [Indexed: 12/12/2022] Open
Abstract
The generalization of fear memories is an adaptive neurobiological process that promotes survival in complex and dynamic environments. When confronted with a potential threat, an animal must select an appropriate defensive response based on previous experiences that are not identical, weighing cues and contextual information that may predict safety or danger. Like other aspects of fear memory, generalization is mediated by the coordinated actions of prefrontal, hippocampal, amygdalar, and thalamic brain areas. In this review article, we describe the current understanding of the behavioral, neural, genetic, and biochemical mechanisms involved in the generalization of fear. Fear generalization is a hallmark of many anxiety and stress-related disorders, and its emergence, severity, and manifestation are sex-dependent. Therefore, to improve the dialog between human and animal studies as well as to accelerate the development of effective therapeutics, we emphasize the need to examine both sex differences and remote timescales in rodent models.
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Affiliation(s)
- Arun Asok
- Jerome L. Greene Science Center, Department of Neuroscience, Columbia University, New York, NY, United States
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY, United States
| | - Eric R. Kandel
- Jerome L. Greene Science Center, Department of Neuroscience, Columbia University, New York, NY, United States
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY, United States
- Howard Hughes Medical Institute (HHMI), Columbia University, New York, NY, United States
- Kavli Institute for Brain Science, Columbia University, New York, NY, United States
| | - Joseph B. Rayman
- Jerome L. Greene Science Center, Department of Neuroscience, Columbia University, New York, NY, United States
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY, United States
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Sanchez LM, Goss J, Wagner J, Davies S, Savage DD, Hamilton DA, Clark BJ. Moderate prenatal alcohol exposure impairs performance by adult male rats in an object-place paired-associate task. Behav Brain Res 2018; 360:228-234. [PMID: 30529401 DOI: 10.1016/j.bbr.2018.12.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 12/06/2018] [Accepted: 12/06/2018] [Indexed: 11/19/2022]
Abstract
Memory impairments, including spatial and object processing, are often observed in individuals with Fetal Alcohol Spectrum Disorders. The neurobiological basis of memory deficits after prenatal alcohol exposure (PAE) is often linked to structural and functional alterations in the medial temporal lobe, including the hippocampus. Recent evidence suggests that the medial temporal lobe plays a critical role in processing high-order sensory stimuli such as complex objects and their associated locations in space. In the first experiment, we tested male rat offspring with moderate PAE in a medial temporal-dependent object-place paired-associate (OPPA) task. The OPPA task requires a conditional discrimination between an identical pair of objects presented at two spatial locations 180° opposite arms of a radial arm maze. Food reinforcement is contingent upon selecting the correct object of the pair for a given spatial location. Adult rats were given a total of 10 trials per day over 14 consecutive days of training. PAE male rats made significantly more errors than male saccharin (SACC) control rats during acquisition of the OPPA task. In Experiment 2, rats performed an object-discrimination task in which a pair of objects were presented in a single arm of the maze. Moderate PAE and SACC control rats exhibited comparable performance. The results suggest that moderate PAE rats can learn to discriminate objects, but are impaired when required to discriminate between objects on the basis of spatial location in the environment.
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Affiliation(s)
- Lilliana M Sanchez
- Department of Psychology, University of New Mexico, Albuquerque, NM, United States
| | - Jonathan Goss
- Department of Psychology, University of New Mexico, Albuquerque, NM, United States
| | - Jennifer Wagner
- Department of Neurosciences, University of New Mexico, Albuquerque, NM, United States
| | - Suzy Davies
- Department of Neurosciences, University of New Mexico, Albuquerque, NM, United States
| | - Daniel D Savage
- Department of Psychology, University of New Mexico, Albuquerque, NM, United States; Department of Neurosciences, University of New Mexico, Albuquerque, NM, United States
| | - Derek A Hamilton
- Department of Psychology, University of New Mexico, Albuquerque, NM, United States; Department of Neurosciences, University of New Mexico, Albuquerque, NM, United States
| | - Benjamin J Clark
- Department of Psychology, University of New Mexico, Albuquerque, NM, United States.
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10
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Abstract
BACKGROUND Previously, the authors have developed a model of how reward-seeking and distress- avoiding behaviour is regulated by the human brain. The forebrain's evolution in vertebrates was taken as a starting point. AIMS The authors want to inspire colleagues to study in particular the pharmacological effects on the described ancient forebrain structures in order to modify specific symptoms of mental disorders. METHODS Compilation of data and ideas of previous articles, with examples to illustrate. RESULTS A primary (lamprey-like), secondary (frog-like) and tertiary (mammal-like) forebrain can be distinguished, organized according to a Russian doll model. The first constituent is primarily involved in producing the emotional response, while the last is principally concerned with constructing conscious cognitive behaviour (including verbal and written communication). Mental disorders comprise (partly related and partly unrelated) biological and rational phenomena. The secondary system regulates the intensity of reward-seeking and distress-avoiding behaviour. An essential component of the primary forebrain evaluates the results of behavioural actions: the lateral habenula-projecting pallidum. These neurons regulate the activity of ascending dopaminergic pathways. The authors suggest that these habenula-projecting pallidum neurons are targeted by subanaesthetic dosages of ketamine. The medial habenula is enriched with nicotinergic acetylcholine receptors and regulates the activity of ascending adrenergic and serotonergic neurons. This may link varenicline-induced hostility to selective serotonin reuptake inhibitor-induced aggression. CONCLUSIONS Studying the effects of new compounds on the primary and secondary brains in lampreys and frogs may yield interesting new treatments of mental disorders.
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Affiliation(s)
- Anton JM Loonen
- University of Groningen, Groningen Research Institute of Pharmacy (GRIP), Unit of PharmacoTherapy, -Epidemiology & -Economics, Groningen, The Netherlands,Mental Health Institute Westelijk Noord-Brabant (GGZWNB), Halsteren, The Netherlands,Anton JM Loonen, University of Groningen, Groningen Research Institute of Pharmacy, PharmacoTherapy, -Epidemiology & -Economics, Antonius Deusinglaan 1, 9713AV Groningen, The Netherlands.
| | - Svetlana A Ivanova
- Mental Health Research Institute, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk, Russian Federation,National Research Tomsk Polytechnic University, School of Non-Destructive Testing & Security, Division for Control and Diagnostics, Tomsk, Russian Federation
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11
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Glavis-Bloom C, Bachevalier J. Neonatal hippocampal lesions facilitate biconditional contextual discrimination learning in monkeys. Behav Neurosci 2018; 132:480-496. [PMID: 30359064 DOI: 10.1037/bne0000277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study examined whether selective neonatal hippocampal lesions in monkeys (Macaca mulatta), which left the surrounding cortical areas (parahippocampal cortex) intact, affect contextual learning and memory compared with controls. Monkeys were tested with an automated touch-screen apparatus so that stimuli and contextual cues could be manipulated independently of one another. The data suggest that animals with neonatal hippocampal lesions have sparing of function with regard to contextual learning and memory when (a) contextual information is irrelevant or (b) relevant for good discrimination performance, and (c) when transferring a contextual rule to new discriminations. These findings are at odds with studies examining contextual learning and memory in monkeys with selective adult-onset hippocampal lesions, and those with nonselective neonatal hippocampal lesions, which have demonstrated impairment in contextual learning and memory. Therefore, the sparing of function seen in this study may be attributable to the early nature of the damage and the plastic nature of the infant brain, as well as the intact medial temporal lobe cortical areas as a result of the lesion methodology. Specifically, by removing the hippocampus early in life, before it has begun to function, the parahippocampal (TH/TF) and perirhinal cortices and its interactions with the lateral prefrontal cortex may be able to support context processing throughout life. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
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Affiliation(s)
- Courtney Glavis-Bloom
- Yerkes National Primate Research Center and Department of Psychology, Emory University
| | - Jocelyne Bachevalier
- Yerkes National Primate Research Center and Department of Psychology, Emory University
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12
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Morici JF, Miranda M, Gallo FT, Zanoni B, Bekinschtein P, Weisstaub NV. 5-HT2a receptor in mPFC influences context-guided reconsolidation of object memory in perirhinal cortex. eLife 2018; 7:33746. [PMID: 29717980 PMCID: PMC5931799 DOI: 10.7554/elife.33746] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 04/07/2018] [Indexed: 12/12/2022] Open
Abstract
Context-dependent memories may guide adaptive behavior relaying in previous experience while updating stored information through reconsolidation. Retrieval can be triggered by partial and shared cues. When the cue is presented, the most relevant memory should be updated. In a contextual version of the object recognition task, we examined the effect of medial PFC (mPFC) serotonin 2a receptor (5-HT2aR) blockade during retrieval in reconsolidation of competing objects memories. We found that mPFC 5-HT2aR controls retrieval and reconsolidation of object memories in the perirhinal cortex (PRH), but not in the dorsal hippocampus in rats. Also, reconsolidation of objects memories in PRH required a functional interaction between the ventral hippocampus and the mPFC. Our results indicate that in the presence of conflicting information at retrieval, mPFC 5-HT2aR may facilitate top-down context-guided control over PRH to control the behavioral response and object memory reconsolidation.
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Affiliation(s)
- Juan Facundo Morici
- Departamento de Ciencias Fisiológicas, Instituto de Fisiología y Biofísica Bernardo Houssay, Facultad de Medicina, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina.,Instituto de Neurociencia Cognitiva y Translacional, Universidad Favaloro, INECO, CONICET, Buenos Aires, Argentina
| | - Magdalena Miranda
- Instituto de Neurociencia Cognitiva y Translacional, Universidad Favaloro, INECO, CONICET, Buenos Aires, Argentina.,Instituto de Biologia Celular y Neurociencias, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Francisco Tomás Gallo
- Instituto de Neurociencia Cognitiva y Translacional, Universidad Favaloro, INECO, CONICET, Buenos Aires, Argentina.,Instituto de Biologia Celular y Neurociencias, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Belén Zanoni
- Instituto de Neurociencia Cognitiva y Translacional, Universidad Favaloro, INECO, CONICET, Buenos Aires, Argentina
| | - Pedro Bekinschtein
- Instituto de Neurociencia Cognitiva y Translacional, Universidad Favaloro, INECO, CONICET, Buenos Aires, Argentina.,Instituto de Biologia Celular y Neurociencias, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Noelia V Weisstaub
- Departamento de Ciencias Fisiológicas, Instituto de Fisiología y Biofísica Bernardo Houssay, Facultad de Medicina, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina.,Instituto de Neurociencia Cognitiva y Translacional, Universidad Favaloro, INECO, CONICET, Buenos Aires, Argentina
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Sanchez LM, Thompson SM, Clark BJ. Influence of Proximal, Distal, and Vestibular Frames of Reference in Object-Place Paired Associate Learning in the Rat. PLoS One 2016; 11:e0163102. [PMID: 27658299 PMCID: PMC5033391 DOI: 10.1371/journal.pone.0163102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 09/04/2016] [Indexed: 11/18/2022] Open
Abstract
Object-place paired associate learning has been used to test hypotheses regarding the neurobiological basis of memory in rodents. Much of this work has focused on the role of limbic and hippocampal-parahippocampal regions, as well as the use of spatial information derived from allothetic visual stimuli to determine location in an environment. It has been suggested that idiothetic self-motion (vestibular) signals and internal representations of directional orientation might play an important role in disambiguating between spatial locations when forming object-place associations, but this hypothesis has not been explicitly tested. In the present study, we investigated the relationship between allothetic (i.e., distal and proximal cues) and vestibular stimuli on performance of an object-place paired-associate task. The paired-associate task was composed of learning to discriminate between an identical pair of objects presented in 180° opposite arms of a radial arm maze. Thus, animals were required to select a particular object on the basis of spatial location (i.e., maze arm). After the animals acquired the object-place rule, a series of probe tests determined that rats utilize self-generated vestibular cues to discriminate between the two maze arms. Further, when available, animals showed a strong preference for local proximal cues associated with the maze. Together, the work presented here supports the establishment of an object-place task that requires both idiothetic and allothetic stimulus sources to guide choice behavior, and which can be used to further investigate the dynamic interactions between neural systems involved in pairing sensory information with spatial locations.
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Affiliation(s)
| | | | - Benjamin J. Clark
- Department of Psychology, University of New Mexico, Albuquerque, New Mexico
- * E-mail:
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Ahn JR, Lee I. Intact CA3 in the hippocampus is only sufficient for contextual behavior based on well-learned and unaltered visual background. Hippocampus 2014; 24:1081-93. [DOI: 10.1002/hipo.22292] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Revised: 04/11/2014] [Accepted: 04/11/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Jae-Rong Ahn
- Department of Brain and Cognitive Sciences; Seoul National University; Seoul Korea
| | - Inah Lee
- Department of Brain and Cognitive Sciences; Seoul National University; Seoul Korea
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Lee I, Park SB. Perirhinal cortical inactivation impairs object-in-place memory and disrupts task-dependent firing in hippocampal CA1, but not in CA3. Front Neural Circuits 2013; 7:134. [PMID: 23966912 PMCID: PMC3743073 DOI: 10.3389/fncir.2013.00134] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 07/26/2013] [Indexed: 11/13/2022] Open
Abstract
Objects and their locations can associatively define an event and a conjoint representation of object-place can form an event memory. Remembering how to respond to a certain object in a spatial context is dependent on both hippocampus and perirhinal cortex (PER). However, the relative functional contributions of the two regions are largely unknown in object-place associative memory. We investigated the PER influence on hippocampal firing in a goal-directed object-place memory task by comparing the firing patterns of CA1 and CA3 of the dorsal hippocampus between conditions of PER muscimol inactivation and vehicle control infusions. Rats were required to choose one of the two objects in a specific spatial context (regardless of the object positions in the context), which was shown to be dependent on both hippocampus and PER. Inactivation of PER with muscimol (MUS) severely disrupted performance of well-trained rats, resulting in response bias (i.e., choosing any object on a particular side). MUS did not significantly alter the baseline firing rates of hippocampal neurons. We measured the similarity in firing patterns between two trial conditions in which the same target objects were chosen on opposite sides within the same arm [object-in-place (O-P) strategy] and compared the results with the similarity in firing between two trial conditions in which the rat chose any object encountered on a particular side [response-in-place (R-P) strategy]. We found that the similarity in firing patterns for O-P trials was significantly reduced with MUS compared to control conditions (CTs). Importantly, this was largely because MUS injections affected the O-P firing patterns in CA1 neurons, but not in CA3. The results suggest that PER is critical for goal-directed organization of object-place associative memory in the hippocampus presumably by influencing how object information is associated with spatial information in CA1 according to task demand.
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Affiliation(s)
- Inah Lee
- Department of Brain and Cognitive Sciences, Seoul National University Seoul, South Korea
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