1
|
Vartzoka F, Parlantza MA, Tarantilis PA, Pitsikas N. Co-administration of sub-effective doses of the constituents of Crocus sativus L. crocins with those of the antipsychotics clozapine and risperidone counteract memory deficits caused by blockade of the NMDA receptor in rats. Phytother Res 2024. [PMID: 39031890 DOI: 10.1002/ptr.8266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 04/03/2024] [Accepted: 05/25/2024] [Indexed: 07/22/2024]
Abstract
Experimental evidence indicates that the noncompetitive N-methyl-D-aspartate (NMDA) receptor antagonists ketamine and MK-801 induce schizophrenia-like symptoms in rodents, including cognitive deficits. Crocins are among the active components of the plant Crocus sativus L. and were found to be effective in different models of psychiatric disorders comprising schizophrenia. The present study was designed to evaluate the efficacy of the joint administration of sub-effective doses of crocins with those of the atypical antipsychotics clozapine and risperidone in alleviating nonspatial recognition and emotional memory deficits induced either by ketamine (3 mg/kg) or MK-801 (0.1 mg/kg) in the rat. To this end, the object recognition and the step-through passive avoidance tests were used. Co-administration of sub-effective doses of crocins (5 mg/kg) with those of clozapine (0.1 mg/kg) or risperidone (0.03 mg/kg) counteracted nonspatial recognition and emotional memory deficits induced by NMDA receptor antagonists. The current findings suggest that this combinatorial treatment was efficacious in attenuating cognitive impairments related to the blockade of the NMDA receptor. In addition, the present results support the potential of crocins as an adjunctive drug for the therapy of schizophrenia.
Collapse
Affiliation(s)
- Foteini Vartzoka
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Maria Anastasia Parlantza
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Petros A Tarantilis
- Laboratory of Chemistry, Department of Food Science and Human Nutrition, School of Food and Nutritional Sciences, Agricultural University of Athens, Athens, Greece
| | - Nikolaos Pitsikas
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| |
Collapse
|
2
|
Nguyen R, Sivakumaran S, Lambe EK, Kim JC. Ventral hippocampal cholecystokinin interneurons gate contextual reward memory. iScience 2024; 27:108824. [PMID: 38303709 PMCID: PMC10831933 DOI: 10.1016/j.isci.2024.108824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 11/06/2023] [Accepted: 01/03/2024] [Indexed: 02/03/2024] Open
Abstract
Associating contexts with rewards depends on hippocampal circuits, with local inhibitory interneurons positioned to play an important role in shaping activity. Here, we demonstrate that the encoding of context-reward memory requires a ventral hippocampus (vHPC) to nucleus accumbens (NAc) circuit that is gated by cholecystokinin (CCK) interneurons. In a sucrose conditioned place preference (CPP) task, optogenetically inhibiting vHPC-NAc terminals impaired the acquisition of place preference. Transsynaptic rabies tracing revealed vHPC-NAc neurons were monosynaptically innervated by CCK interneurons. Using intersectional genetic targeting of CCK interneurons, ex vivo optogenetic activation of CCK interneurons increased GABAergic transmission onto vHPC-NAc neurons, while in vivo optogenetic inhibition of CCK interneurons increased cFos in these projection neurons. Notably, CCK interneuron inhibition during sucrose CPP learning increased time spent in the sucrose-associated location, suggesting enhanced place-reward memory. Our findings reveal a previously unknown hippocampal microcircuit crucial for modulating the strength of contextual reward learning.
Collapse
Affiliation(s)
- Robin Nguyen
- Department of Psychology, University of Toronto, Toronto, ON, Canada
| | | | - Evelyn K. Lambe
- Department of Physiology, University of Toronto, Toronto, ON, Canada
- Department of OBGYN, University of Toronto, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Jun Chul Kim
- Department of Psychology, University of Toronto, Toronto, ON, Canada
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
3
|
Vartzoka F, Ozenoglu E, Pitsikas N. The Nitric Oxide (NO) Donor Molsidomine Attenuates Memory Impairments Induced by the D1/D2 Dopaminergic Receptor Agonist Apomorphine in the Rat. Molecules 2023; 28:6861. [PMID: 37836704 PMCID: PMC10574075 DOI: 10.3390/molecules28196861] [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: 08/18/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Several lines of evidence suggest that scarcity of the gaseous molecule nitric oxide (NO) is associated with the pathogenesis of schizophrenia. Therefore, compounds, such as NO donors, that can normalize NO levels might be of utility for the treatment of this pathology. It has been previously shown that the NO donor molsidomine attenuated schizophrenia-like behavioral deficits caused by glutamate hypofunction in rats. The aim of the current study was to investigate the efficacy of molsidomine and that of the joint administration of this NO donor with sub-effective doses of the non-typical antipsychotics clozapine and risperidone to counteract memory deficits associated with dysregulation of the brain dopaminergic system in rats. Molsidomine (2 and 4 mg/kg) attenuated spatial recognition and emotional memory deficits induced by the mixed dopamine (DA) D1/D2 receptor agonist apomorphine (0.5 mg/kg). Further, the joint administration of sub-effective doses of molsidomine (1 mg/kg) with those of clozapine (0.1 mg/kg) or risperidone (0.03 mg/kg) counteracted non-spatial recognition memory impairments caused by apomorphine. The present findings propose that molsidomine is sensitive to DA dysregulation since it attenuates memory deficits induced by apomorphine. Further, the current findings reinforce the potential of molsidomine as a complementary molecule for the treatment of schizophrenia.
Collapse
Affiliation(s)
- Foteini Vartzoka
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, Panepistimiou 3, 415-00 Larissa, Greece
| | - Elif Ozenoglu
- School of Medicine, University of Acibadem, 415-00 Istanbul, Turkey
| | - Nikolaos Pitsikas
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, Panepistimiou 3, 415-00 Larissa, Greece
| |
Collapse
|
4
|
Sun CW, Yan C, Lv QY, Wang YJ, Xiao WY, Wang Y, Yi ZH, Wang JK. Emotion Context Insensitivity is generalized in individuals with major depressive disorder but not in those with subclinical depression. J Affect Disord 2022; 313:204-213. [PMID: 35777495 DOI: 10.1016/j.jad.2022.06.069] [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] [Received: 03/01/2022] [Revised: 06/02/2022] [Accepted: 06/23/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Depressed individuals experience deficits in emotional reactivity. One well-established theory is the Emotion Context Insensitivity (ECI) theory. To better understand impairments in emotional reactivity, we investigated whether the ECI theory is applicable to anticipatory, consummatory, and remembered affect, in both clinical and subclinical depression. METHODS Participants were divided into four groups: Major Depressive Disorder Group (MDD, N = 60), Control Group for MDD (ControlMDD, N = 50), Subclinical Depression Group (SD, N = 56), and Control Group for SD (ControlSD, N = 56). The Hamilton Depression Rating Scale and the Beck Depression Inventory were used to assess the severity of depression and anhedonia symptoms. The Monetary Incentive Delay Task evaluated participants' affective responses towards monetary stimuli. RESULTS The MDD group was more insensitive to both monetary reward and loss across most types of affect than was the control group. Compared with the controls, the SD group exhibited lower reactivity in anticipatory positive affect but enhanced reactivity in consummatory positive, anticipatory, and remembered negative affect. LIMITATIONS Emotional affect was evaluated by subjective ratings, which may lack objectivity. Additionally, laboratory settings and monetary rewards used in this study may cause the results less generalized to daily life and to other types of rewards. CONCLUSION The pattern of emotional reactivity in the MDD group was partly consistent with the ECI theory, whereas the SD group showed greater arousal and instability of emotional reactions. These different patterns could facilitate the understanding of emotional reactivity and develop further treatments across the course of depression.
Collapse
Affiliation(s)
- Ching-Wen Sun
- Key Laboratory of Brain Functional Genomics (MOE&STCSM), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China; Shanghai Changning Mental Health Center, Shanghai, China
| | - Chao Yan
- Key Laboratory of Brain Functional Genomics (MOE&STCSM), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China; Shanghai Changning Mental Health Center, Shanghai, China.
| | - Qin-Yu Lv
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya-Jing Wang
- Key Laboratory of Brain Functional Genomics (MOE&STCSM), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China
| | - Wen-Yi Xiao
- Key Laboratory of Brain Functional Genomics (MOE&STCSM), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China
| | - Yi Wang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Zheng-Hui Yi
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Ji-Kun Wang
- Key Laboratory of Brain Functional Genomics (MOE&STCSM), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China.
| |
Collapse
|
5
|
Raucher-Chéné D, Lavigne KM, Lepage M. Episodic Memory and Schizophrenia: From Characterization of Relational Memory Impairments to Neuroimaging Biomarkers. Curr Top Behav Neurosci 2022; 63:115-136. [PMID: 35902545 DOI: 10.1007/7854_2022_379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Episodic memory research in schizophrenia has a long history already which has clearly established significant impairments and strong associations with brain measures and functional outcome. The purpose of this chapter is not to make an exhaustive review of the recent literature but to highlight some relatively recent developments in the cognitive neuroscience field of episodic memory and schizophrenia. Hence, we present a contemporary view focusing specifically of relational memory which represents a form of episodic memory that refers to associations or binding among items or elements presented together. We describe the major tasks used and illustrate how their combination with brain imaging has: (1) favored the use of experimental memory tasks to isolate specific processes with specific neural correlates, (2) led to a distributed view of the neural correlates of memory impairments in schizophrenia where multiple regions are contributing, and (3) made possible the identification of fMRI biomarkers specific to episodic memory. We then briefly propose what we see as the next steps for memory research in schizophrenia so that the impact of this work can be maximized.
Collapse
Affiliation(s)
- Delphine Raucher-Chéné
- Cognition, Health, and Society Laboratory (EA 6291), University of Reims Champagne-Ardenne, Reims, France.,Academic Department of Psychiatry, University Hospital of Reims, EPSM Marne, Reims, France
| | - Katie M Lavigne
- Douglas Research Centre, Verdun, QC, Canada.,Department of Psychiatry, McGill University, Montréal, QC, Canada.,McGill Centre for Integrative Neuroscience, Montreal Neurological Institute, McGill University, Montreal, Canada
| | - Martin Lepage
- Douglas Research Centre, Verdun, QC, Canada. .,Department of Psychiatry, McGill University, Montréal, QC, Canada.
| |
Collapse
|
6
|
Courtenay K, Wong AHC, Patel R, Girard TA. Emotional memory for facial expressions in schizophrenia spectrum disorders: The role of encoding method. J Psychiatr Res 2022; 146:43-49. [PMID: 34953304 DOI: 10.1016/j.jpsychires.2021.12.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/27/2021] [Accepted: 12/11/2021] [Indexed: 11/19/2022]
Abstract
Memory is better for emotional rather than neutral events or materials (emotional enhancement of memory; EEM). Evidence suggests that this memory benefit remains intact in schizophrenia, but conflicting findings present the need for further research to understand how and when this process occurs. Here, we examine whether different encoding methods for learning emotional faces may result in different EEM patterns in those with schizophrenia spectrum disorders (SSD). A patient group (n = 28) and healthy comparisons (n = 29) encoded faces in two conditions that manipulated attentional focus to promote direct (emotion judgements) or indirect (sex discrimination) processing of emotional content. Based on literature in schizophrenia showing selective emotion perception deficits on tasks of direct processing but relatively intact emotion perception on indirect processing tasks, we hypothesized that patients would show greater EEM effects when faces were encoded indirectly. This hypothesis was not supported, and the patient group instead showed a similar intact EEM for angry and fearful faces to healthy comparisons in both encoding conditions. Further, using the Remember/Know paradigm, we demonstrated that the EEM in SSD appears selective to recollection-based memory, which helps to explain inconsistencies in past literature that has not differentiated between recognition domains. These findings have important implications for improving emotional memory and functional outcomes in SSD; future research should establish how the EEM for facial expressions may relate to social functioning.
Collapse
Affiliation(s)
- Kesia Courtenay
- Department of Psychology, X University (formerly Ryerson University), Toronto, ON, Canada.
| | - Albert H C Wong
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry in the Faculty of Medicine at the University of Toronto, Toronto, ON, Canada.
| | - Ronak Patel
- Department of Clinical Health Psychology, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.
| | - Todd A Girard
- Department of Psychology, X University (formerly Ryerson University), Toronto, ON, Canada.
| |
Collapse
|
7
|
Cervone D. Five paths to personality coherence: Integrative implications of the Knowledge-and-Appraisal Personality Architecture. EUROPEAN JOURNAL OF PERSONALITY 2021. [DOI: 10.1177/08902070211015599] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The study of personality coherence can be grounded in an analysis of personality architecture, that is, the overall structure and dynamics of intra-individual personality systems. A personality architecture can identify, and organize the study of, interrelated phenomena that each are instances of personality coherence. It thereby can provide an integrative framework for understanding relations among distinct lines of research. This thesis is advanced by drawing on the Knowledge-and-Appraisal Personality Architecture, or KAPA model. KAPA model principles distinguish among three classes of social-cognitive knowledge structures: beliefs, goals, and evaluative standards. These distinctions, in turn, provide a foundation for understanding five aspects of personality coherence: 1) Belief-Based Coherence, 2) Goal-Based Coherence, 3) Evaluative Standards-Based Coherence, 4) Intra-Psychic Coherence (that is, coherent functional interrelations among personality systems), and 5) Phenomenological Coherence. Research documenting each of these five paths to personality coherence is reviewed. The paper also reviews the strengths and limitations of 20th-century social-cognitive formulations that provide key foundations for the KAPA model.
Collapse
|
8
|
Culbreth AJ, Waltz JA, Frank MJ, Gold JM. Retention of Value Representations Across Time in People With Schizophrenia and Healthy Control Subjects. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2021; 6:420-428. [PMID: 32712211 PMCID: PMC7708393 DOI: 10.1016/j.bpsc.2020.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/24/2020] [Accepted: 05/18/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND The current study aimed to further etiological understanding of the psychological mechanisms underlying negative symptoms in people with schizophrenia. Specifically, we tested whether negative symptom severity is associated with reduced retention of reward-related information over time and thus a degraded ability to utilize such information to guide future action selection. METHODS Forty-four patients with a diagnosis of schizophrenia or schizoaffective disorder and 28 healthy control volunteers performed a probabilistic reinforcement-learning task involving stimulus pairs in which choices resulted in reward or in loss avoidance. Following training, participants indicated their valuation of learned stimuli in a test/transfer phase. The test/transfer phase was administered immediately following training and 1 week later. Percent retention was defined as accuracy at week-long delay divided by accuracy at immediate delay. RESULTS Healthy control subjects and people with schizophrenia showed similarly robust retention of reinforcement learning over a 1-week delay interval. However, in the schizophrenia group, negative symptom severity was associated with reduced retention of information regarding the value of actions across a week-long interval. This pattern was particularly notable for stimuli associated with reward compared with loss avoidance. CONCLUSIONS Our results show that although individuals with schizophrenia may initially learn about rewarding aspects of their environment, such learning decays at a more rapid rate in patients with severe negative symptoms. Thus, previously learned reward-related information may be more difficult to access to guide future decision making and to motivate action selection.
Collapse
Affiliation(s)
- Adam J Culbreth
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland, School of Medicine, Baltimore, Maryland.
| | - James A Waltz
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland, School of Medicine, Baltimore, Maryland
| | - Michael J Frank
- Department of Cognitive, Linguistics, and Psychological Sciences, Brown University, Providence, Rhode Island
| | - James M Gold
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland, School of Medicine, Baltimore, Maryland
| |
Collapse
|
9
|
Pitsikas N, Zoupa E, Gravanis A. The novel dehydroepiandrosterone (DHEA) derivative BNN27 counteracts cognitive deficits induced by the D1/D2 dopaminergic receptor agonist apomorphine in rats. Psychopharmacology (Berl) 2021; 238:227-237. [PMID: 33005973 DOI: 10.1007/s00213-020-05672-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/28/2020] [Indexed: 01/07/2023]
Abstract
RATIONALE Schizophrenia is a devastating mental disease that affects nearly 1% of the population worldwide. It is well documented that the dopaminergic (DAergic) system is compromised in schizophrenia. It is of note that the mixed dopamine (DA) D1/D2 receptor agonist apomorphine induces schizophrenia-like symptoms in rodents, including disruption of memory abilities. Neuroactive steroids, comprising dehydroepiandrosterone (DHEA) and dehydroepiandrosterone sulphate (DHEAS), were shown to affect brain DAergic system and to be involved in schizophrenia. BNN27 is a novel DHEA derivative, which is devoid of steroidogenic activity. It has recently been reported that BNN27 counteracted schizophrenia-like behavioural deficits produced by glutamate hypofunction in rats. OBJECTIVES The aim of the present study was to investigate the ability of BNN27 to attenuate non-spatial, spatial recognition and discrete memory deficits induced by apomorphine in rats. METHODS To this end, the object recognition task (ORT), the object location task (OLT) and the step-through passive avoidance test (STPAT) were used. RESULTS BNN27 (3 and 6 mg/kg, i.p.) attenuated apomorphine (0.5 mg/kg, i.p.)-induced non-spatial, spatial recognition and discrete memory deficits. Interestingly, the effects of compounds on memory cannot be ascribed to changes in locomotor activity. CONCLUSIONS Our findings suggest that BNN27 is effective to DA dysfunction caused by apomorphine, attenuating cognitive impairments induced by this D1/D2 receptor agonist in rats. Additionally, our findings illustrate a functional interaction between BNN27 and the DAergic system that may be of relevance for schizophrenia-like behavioural symptoms.
Collapse
Affiliation(s)
- Nikolaos Pitsikas
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, Panepistimiou 3, 415-00, Larissa, Greece.
| | - Elli Zoupa
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, Panepistimiou 3, 415-00, Larissa, Greece
| | - Achille Gravanis
- Department of Pharmacology, School of Medicine, and Institute of Molecular Biology & Biotechnology, Foundation of Research & Technology-Hellas, University of Crete, Heraklion, Greece
| |
Collapse
|
10
|
Wei GX, Ge L, Chen LZ, Cao B, Zhang X. Structural abnormalities of cingulate cortex in patients with first-episode drug-naïve schizophrenia comorbid with depressive symptoms. Hum Brain Mapp 2020; 42:1617-1625. [PMID: 33296139 PMCID: PMC7978138 DOI: 10.1002/hbm.25315] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 11/27/2020] [Accepted: 11/30/2020] [Indexed: 11/07/2022] Open
Abstract
Depressive symptoms are common in patients with first-episode psychosis. However, the neural mechanisms underlying the comorbid depression in schizophrenia are still unknown. The main purpose of this study was to characterize the structural abnormalities of first-episodes drug-naïve (FEDN) schizophrenia comorbid with depression by utilizing both volume-based and surface-based morphometric measurements. Forty-two patients with FEDN schizophrenia and 29 healthy controls were recruited. The 24-item Hamilton Depression Rating Scale (HAMD-24) was administrated to divide all patients into depressive patients (DP) and non-depressive patients (NDP). Compared with NDP, DP had a significantly larger volume and surface area in the left isthmus cingulate cortex and also had a greater volume in the left posterior cingulate cortex. Correlation analysis showed that HAMD total score was positively correlated with the surface area of the left isthmus cingulate and gray matter volume of the left isthmus cingulate cortex. In addition, gray matter volume of the left isthmus cingulate was also correlated with the PANSS general psychopathology or total score. The findings suggest that prominent structural abnormalities of gray matter are mainly concentrated on the cingulate cortex in FEDN schizophrenia patients comorbid with depression, which may contribute to depressive symptoms and psychopathological symptoms.
Collapse
Affiliation(s)
- Gao-Xia Wei
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,CAS Key Laboratory of Behavioral Science, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Likun Ge
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Li-Zhen Chen
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Bo Cao
- Department of Psychiatry, Faculty of Medicine & Dentistry, University of Alberta, Alberta, Canada
| | - Xiangyang Zhang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China
| |
Collapse
|
11
|
Mow JL, Gandhi A, Fulford D. Imaging the "social brain" in schizophrenia: A systematic review of neuroimaging studies of social reward and punishment. Neurosci Biobehav Rev 2020; 118:704-722. [PMID: 32841653 DOI: 10.1016/j.neubiorev.2020.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/20/2020] [Accepted: 08/07/2020] [Indexed: 10/23/2022]
Abstract
Decreased social functioning and high levels of loneliness and social isolation are common in schizophrenia spectrum disorders (SSD), contributing to reduced quality of life. One key contributor to social impairment is low social motivation, which may stem from aberrant neural processing of socially rewarding or punishing stimuli. To summarize research on the neurobiology of social motivation in SSD, we performed a systematic literature review of neuroimaging studies involving the presentation of social stimuli intended to elicit feelings of reward and/or punishment. Across 11 studies meeting criteria, people with SSD demonstrated weaker modulation of brain activity in regions within a proposed social interaction network, including prefrontal, cingulate, and striatal regions, as well as the amygdala and insula. Firm conclusions regarding neural differences in SSD in these regions, as well as connections within networks, are limited due to conceptual and methodological inconsistencies across the available studies. We conclude by making recommendations for the study of social reward and punishment processing in SSD in future research.
Collapse
Affiliation(s)
- Jessica L Mow
- Department of Psychological & Brain Sciences, Boston University, 64 Cummington Mall, Boston, MA, 02215, United States.
| | - Arti Gandhi
- Sargent College of Health and Rehabilitation Sciences, Boston University, 635 Commonwealth Avenue, Boston, MA, 02215, United States
| | - Daniel Fulford
- Department of Psychological & Brain Sciences, Boston University, 64 Cummington Mall, Boston, MA, 02215, United States; Sargent College of Health and Rehabilitation Sciences, Boston University, 635 Commonwealth Avenue, Boston, MA, 02215, United States
| |
Collapse
|
12
|
Fulford D, Mote J, Gard DE, Mueser KT, Gill K, Leung L, Dillaway K. Development of the Motivation and Skills Support (MASS) social goal attainment smartphone app for (and with) people with schizophrenia. ACTA ACUST UNITED AC 2020; 30:23-32. [PMID: 33437970 DOI: 10.1016/j.jbct.2020.03.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
People with schizophrenia and schizoaffective disorder (SZ) often struggle with social impairment, including small social networks and loneliness. Limitations in social skills and reduced social motivation-effort to engage in social connection-are key contributors to social impairment. While evidence-based approaches to improving social outcomes are available, including social skills training and cognitive behavioral therapy for psychosis, ongoing access to these interventions is often limited. Mobile technologies, including smartphone applications (apps), may address some of this need. In this paper, we describe the development of a smartphone app designed to address social skill and motivation deficits in SZ: the Motivation and Skills Support (MASS) app. We discuss the incorporation of stakeholder input into intervention design as well as results from usability pilot testing of the app in a sample of people with SZ. Finally, we describe next steps in the development and testing process of the MASS app.
Collapse
Affiliation(s)
- Daniel Fulford
- Sargent College of Health & Rehabilitation Sciences, Boston University, Boston, USA.,Department of Psychological & Brain Sciences, Boston University, Boston, USA
| | - Jasmine Mote
- Sargent College of Health & Rehabilitation Sciences, Boston University, Boston, USA
| | - David E Gard
- Department of Psychology, San Francisco State University, San Francisco, USA
| | - Kim T Mueser
- Sargent College of Health & Rehabilitation Sciences, Boston University, Boston, USA.,Department of Psychological & Brain Sciences, Boston University, Boston, USA.,Department of Psychiatry, Boston University, Boston, USA
| | - Kathryn Gill
- Sargent College of Health & Rehabilitation Sciences, Boston University, Boston, USA
| | - Lawrence Leung
- Department of Psychology, San Francisco State University, San Francisco, USA
| | - Kara Dillaway
- Sargent College of Health & Rehabilitation Sciences, Boston University, Boston, USA
| |
Collapse
|
13
|
Learning the Affective Value of Others in Schizophrenia: Examining the Role of Negative Symptoms and Cognitive Deficits. JOURNAL OF PSYCHOPATHOLOGY AND BEHAVIORAL ASSESSMENT 2020. [DOI: 10.1007/s10862-020-09818-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
14
|
Weittenhiller LP, Painter JM, Moran EK, Kring AM. The discrepancy between momentary and remembered pleasure in schizophrenia. Schizophr Res 2020; 216:536-537. [PMID: 31818633 DOI: 10.1016/j.schres.2019.11.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 11/15/2019] [Accepted: 11/17/2019] [Indexed: 11/19/2022]
Affiliation(s)
| | | | - Erin K Moran
- Department of Psychology, University of California, Berkeley, USA
| | - Ann M Kring
- Department of Psychology, University of California, Berkeley, USA
| |
Collapse
|
15
|
Moret-Tatay C, Rueda PM, Bernabé-Valero G, Gamermann D. Emotional Recognition in Schizophrenia: An Analysis of Response Components in Middle-Aged Adults. Psychiatr Q 2019; 90:543-552. [PMID: 31134418 DOI: 10.1007/s11126-019-09649-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ageing seems to present a bias towards positive stimuli that might be reflected in response times. However, this process is more complex for middle-aged adults, and even more in schizophrenia. In order to examine this issue, an experimental study was carried out in which 48 participants were divided into two groups: an experimental group of 24 participants diagnosed with schizophrenia and a control group of 24 subjects with no disorders. The main objective of the study was to evaluate response time components according to the emotional valence of the stimulus, to test recognition and discrimination in both groups. A battery of 120 images from the International Affective Picture System (IAPS), representing positive, negative and neutral emotional valences, was employed. Response times were evaluated in terms of analysis of variance, as well as its inherent response times components. The results showed slower responses in the group with schizophrenia than in the control one. Moreover, a poorer performance was depicted in the latency components this group. Finally, a differential deficit pattern for emotion between groups was not found.
Collapse
Affiliation(s)
- Carmen Moret-Tatay
- Facultad de Psicología, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain.
| | - Paula Melero Rueda
- Facultad de Psicología, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
| | - Gloria Bernabé-Valero
- Facultad de Psicología, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
| | - Daniel Gamermann
- Department of Physics, Universidade Federal do Rio Grande do Sul (UFRGS).-Instituto de Física, Av. Bento Gonçalves 9500, Porto Alegre, RS, 90040-060, Brazil
| |
Collapse
|
16
|
Castro MK, Bailey DH, Zinger JF, Martin EA. Late electrophysiological potentials and emotion in schizophrenia: A meta-analytic review. Schizophr Res 2019; 211:21-31. [PMID: 31324440 DOI: 10.1016/j.schres.2019.07.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 06/24/2019] [Accepted: 07/07/2019] [Indexed: 11/28/2022]
Abstract
INTRODUCTION There is mixed evidence about emotional processing abnormalities in schizophrenia and schizoaffective disorder, with self-reports and clinician ratings indicating significant differences between patients and controls, but studies of in-the-moment, self-reported emotional experience finding only small differences between these groups. The current meta-analysis synthesizes statistics from studies measuring the P3 and LPP, two event-related potential (ERP) components sensitive to attentional allocation, to examine whether patients exhibit ERP response abnormalities to neutral and valenced visual stimuli. METHODS Standardized mean amplitudes and standard errors of P3 and/or LPP waveforms (300-2000 ms) in response to neutral and valenced images were calculated for 13 studies (total n = 339 individuals with schizophrenia, 331 healthy controls). RESULTS In response to neutral images, there were very small, non-significant differences in ERP amplitudes between patient and control groups (k = 9; Hedges' g = -0.06, 95% CI: -055, 0.43, p = 0.81). In contrast, patients showed a small, significant reduction in ERP amplitudes compared to controls in response to negative images (k = 13; Hedges' g = -0.32, 95% CI: -0.59, -0.05, p = 0.02) and a small, but nonsignificant, reduction in amplitudes in response to positive images (k = 7; Hedges' g = -0.27, 95% CI: -0.71, 0.18, p = 0.24). CONCLUSIONS AND IMPLICATIONS The current review indicates that compared to controls, patients have slightly diminished P3 and LPP amplitudes in response to positive and negative stimuli. This small reduction may reflect decreased attention allocation, possibly indicating an abnormality during a distinct stage of early processing related to evaluating the motivational salience of a stimulus.
Collapse
Affiliation(s)
- Mayan K Castro
- University of California, Irvine, United States of America.
| | - Drew H Bailey
- University of California, Irvine, United States of America.
| | | | | |
Collapse
|
17
|
Boecker L, Pauli P. Affective startle modulation and psychopathology: Implications for appetitive and defensive brain systems. Neurosci Biobehav Rev 2019; 103:230-266. [PMID: 31129237 DOI: 10.1016/j.neubiorev.2019.05.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 05/12/2019] [Accepted: 05/18/2019] [Indexed: 02/06/2023]
Abstract
Startle reflex potentiation versus startle attenuation to unpleasant versus pleasant stimuli likely reflect priming of the defensive versus appetitive motivational systems, respectively. This review summarizes and systemizes the literature on affective startle modulation related to psychopathologies with the aim to reveal underlying mechanisms across psychopathologies. We found evidence for psychopathologies characterized by increased startle potentiation to unpleasant stimuli (anxiety disorders), decreased startle potentiation to unpleasant stimuli (psychopathy), decreased startle attenuation to pleasant stimuli (ADHD), as well as a general hyporeactivity to affective stimuli (depression). Increased versus decreased startle responses to disorder-specific stimuli characterize specific phobia and drug dependence. No psychopathology is characterized by increased startle attenuation to standard pleasant stimuli or a general hyperreactivity to affective stimuli. This review indicates that the defensive and the appetitive systems operate independently mostly in accordance with the motivational priming hypothesis and that affective startle modulation is a highly valuable paradigm to unraveling dysfunctions of the defensive and appetitive systems in psychopathologies as requested by the Research Domain Criteria initiative.
Collapse
Affiliation(s)
- Lea Boecker
- Department of Economic Psychology, Social Psychology & Experimental Methods, Leuphana University of Lüneburg, Universitätsallee 1, 21335 Lüneburg, Germany.
| | - Paul Pauli
- Department of Psychology (Biological Psychology, Clinical Psychology, and Psychotherapy), University of Würzburg, Marcusstraße 9-11, 97070 Germany; Center of Mental Health, Medical Faculty, University of Würzburg, Germany
| |
Collapse
|
18
|
Adem A, Madjid N, Stiedl O, Bonito-Oliva A, Konradsson-Geuken Å, Holst S, Fisone G, Ögren SO. Atypical but not typical antipsychotic drugs ameliorate phencyclidine-induced emotional memory impairments in mice. Eur Neuropsychopharmacol 2019; 29:616-628. [PMID: 30910381 DOI: 10.1016/j.euroneuro.2019.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 02/28/2019] [Accepted: 03/07/2019] [Indexed: 01/09/2023]
Abstract
Schizophrenia is associated with cognitive impairments related to hypofunction in glutamatergic N-methyl-D-aspartate receptor (NMDAR) transmission. Phencyclidine (PCP), a non-competitive NMDAR antagonist, models schizophrenia-like behavioral symptoms including cognitive deficits in rodents. This study examined the effects of PCP on emotional memory function examined in the passive avoidance (PA) task in mice and the ability of typical and atypical antipsychotic drugs (APDs) to rectify the PCP-mediated impairment. Pre-training administration of PCP (0.5, 1, 2 or 3 mg/kg) dose-dependently interfered with memory consolidation in the PA task. In contrast, PCP was ineffective when administered after training, and immediately before the retention test indicating that NMDAR blockade interferes with memory encoding mechanisms. The typical APD haloperidol and the dopamine D2/3 receptor antagonist raclopride failed to block the PCP-induced PA impairment suggesting a negligible role of D2 receptors in the PCP impairment. In contrast, the memory impairment was blocked by the atypical APDs clozapine and olanzapine in a dose-dependent manner while risperidone was effective only at the highest dose tested (1 mg/kg). The PCP-induced impairment involves 5-HT1A receptor mechanisms since the antagonist NAD-299 blocked the memory impairment caused by PCP and the ability of clozapine to attenuate the impairment by PCP. These results indicate that atypical but not typical APDs can ameliorate NMDAR-mediated memory impairments and support the view that atypical APDs such as clozapine can modulate glutamatergic memory dysfunctions through 5-HT1A receptor mechanisms. These findings suggest that atypical APDs may improve cognitive impairments related to glutamatergic dysfunction relevant for emotional memories in schizophrenia.
Collapse
Affiliation(s)
- Abdu Adem
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, United Arab Emirates.
| | - Nather Madjid
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, United Arab Emirates; Department of Neuroscience, Karolinska Institutet, Solnavägen 9, S-171 77 Stockholm, Sweden
| | - Oliver Stiedl
- Center for Neurogenomics and Cognitive Research, VU University Amsterdam, the Netherlands
| | | | - Åsa Konradsson-Geuken
- Department of Neuroscience, Karolinska Institutet, Solnavägen 9, S-171 77 Stockholm, Sweden
| | - Sarah Holst
- Department of Neuroscience, Karolinska Institutet, Solnavägen 9, S-171 77 Stockholm, Sweden
| | - Gilberto Fisone
- Department of Neuroscience, Karolinska Institutet, Solnavägen 9, S-171 77 Stockholm, Sweden
| | - Sven Ove Ögren
- Department of Neuroscience, Karolinska Institutet, Solnavägen 9, S-171 77 Stockholm, Sweden.
| |
Collapse
|
19
|
Fan F, Xiang H, Tan S, Yang F, Fan H, Guo H, Kochunov P, Wang Z, Hong LE, Tan Y. Subcortical structures and cognitive dysfunction in first episode schizophrenia. Psychiatry Res Neuroimaging 2019; 286:69-75. [PMID: 30921760 PMCID: PMC6475899 DOI: 10.1016/j.pscychresns.2019.01.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 01/09/2019] [Accepted: 01/11/2019] [Indexed: 12/14/2022]
Abstract
Schizophrenia is associated with widespread cortical and subcortical abnormalities. Studies examining cognitive deficits in schizophrenia have historically focused on cortical deficits; however, many subcortical areas also support cognition. We sought to determine whether deficits in subcortical gray matter are linked to neurocognitive dysfunction in patients with first-episode schizophrenia. This study included 170 patients with first-episode schizophrenia and 88 healthy controls. Clinical symptoms, neurocognitive function, and structural images were assessed. Subcortical volumes were recorded. Patients had significant deficits in all cognitive domains, including processing speed, attention, memory, executive function and social cognition. Patients also demonstrated significantly smaller volumes in the amygdala, hippocampus, thalamus, and total cortical gray matter than did controls after Bonferroni correction for multiple comparisons. Reasoning/problem solving was significantly and positively correlated with the volume of the amygdala and nucleus accumbens in patients. Positive symptoms of psychosis were positively correlated with the volume of the amygdala and nucleus accumbens. In addition, the dose of antipsychotic medication was positively correlated with the volume of the amygdala, nucleus accumbens, caudate, putamen, and pallidum. In conclusion, schizophrenia is associated with profound cognitive deficits. Our findings suggest that subcortical structures contribute to specific domains of cognitive dysfunction in first-episode schizophrenia.
Collapse
Affiliation(s)
- Fengmei Fan
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing 100096, China; State Key Laboratory of Cognitive Neuroscience and Learning & International Data Group/McGovern Institute for Brain Research, Center for Collaboration and Innovation in Brain and Learning Sciences, Beijing Normal University, Beijing 100875, China.
| | - Hong Xiang
- Chongqing Three Gorges Central Hospital, Chongqing 404000, China
| | - Shuping Tan
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing 100096, China
| | - Fude Yang
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing 100096, China
| | - Hongzhen Fan
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing 100096, China
| | - Hua Guo
- Zhumadian Psychiatry Hospital, Henan Province, China
| | - Peter Kochunov
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, USA
| | - Zhiren Wang
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing 100096, China
| | - L Elliot Hong
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, USA
| | - Yunlong Tan
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing 100096, China.
| |
Collapse
|
20
|
Lee SW, Jeong B, Park JI, Chung GH, Lee HJ, Cui Y, Kim WS, Oh KH, Oh IS, Shen GF, Chung YC. Alteration of Semantic Networks during Swear Words Processing in Schizophrenia. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2019; 17:64-73. [PMID: 30690941 PMCID: PMC6361040 DOI: 10.9758/cpn.2019.17.1.64] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/22/2017] [Accepted: 10/14/2017] [Indexed: 01/06/2023]
Abstract
Objective Positive symptoms, such as delusion and hallucination, commonly include negative emotional content in schizophrenia. We investigated the neural basis implicated during the processing of strong negative emotional words in patients with schizophrenia. Methods In our study, 35 patients with schizophrenia and 19 healthy controls were recruited, and the participants were asked to passively view the words that contained swearing and neutral content during functional magnetic resonance imaging. Results Patients with schizophrenia, compared to healthy controls, showed hypoactivation to the swear and neutral words stimuli in the left inferior frontal gyrus, left middle frontal gyrus, and left angular/supramarginal gyrus. More specifically, patients with remitted schizophrenia were found to have greater activation to the stimuli in the left middle/inferior frontal gyrus than patients with active schizophrenia. Furthermore, in the analysis of regions of interests, the left inferior and middle frontal gyrus activity was related to the severity of positive symptoms, including delusion and suspiciousness. Conclusion Our results suggest that patients with schizophrenia have difficulty in semantic processing and inhibitory control of swear words, and these abnormalities may be connected with the severity of positive symptoms.
Collapse
Affiliation(s)
- Sang Won Lee
- Laboratory of Clinical Neuroscience and Development, Graduate School of Medical Science and Engineering, KAIST, Daejeon, Korea
| | - Bumseok Jeong
- Laboratory of Clinical Neuroscience and Development, Graduate School of Medical Science and Engineering, KAIST, Daejeon, Korea.,Center of Optics for Health Science, KAIST Institute, KAIST, Daejeon, Korea
| | - Jong-Il Park
- Department of Psychiatry, Chonbuk National University Medical School, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Gyung Ho Chung
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea.,Department of Radiology, Chonbuk National University Medical School, Jeonju, Korea
| | - Hyo-Jong Lee
- Department of Computer Science and Engineering & Center for Advanced Image and Information Technology, Chonbuk National University, Jeonju, Korea
| | - Yin Cui
- Department of Psychiatry, Chonbuk National University Medical School, Jeonju, Korea
| | - Woo-Sung Kim
- Department of Biomedical Engineering, Chonbuk National University, Jeonju, Korea
| | - Kang Han Oh
- Division of Computer Science and Engineering, Chonbuk National University, Jeonju, Korea
| | - Il Seok Oh
- Division of Computer Science and Engineering, Chonbuk National University, Jeonju, Korea
| | - Guang Fan Shen
- Department of Psychiatry, Chonbuk National University Medical School, Jeonju, Korea
| | - Young-Chul Chung
- Department of Psychiatry, Chonbuk National University Medical School, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| |
Collapse
|
21
|
Timing matters in elaborative processing of positive stimuli: Gamma band reactivity in schizophrenia compared to depression and healthy adults. Schizophr Res 2019; 204:111-119. [PMID: 30121184 PMCID: PMC6377351 DOI: 10.1016/j.schres.2018.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 03/12/2018] [Accepted: 08/08/2018] [Indexed: 11/24/2022]
Abstract
Some individuals with schizophrenia report similar feelings of positive affect "in the moment" compared to control participants but report decreased trait positive affect overall. One possible explanation for this disconnection between state and trait positive affect is the extent to which individuals with schizophrenia engage in elaborative processing of positive stimuli. To assess this, we examined evoked gamma band activity in response to positive words over several seconds in a group with schizophrenia, a group with major depressive disorder, and a healthy control group. From a pre-stimulus baseline to 2000 ms after onset of the stimulus (henceforth, "early period"), the schizophrenia group showed a reliable increase in gamma activity compared to both the control and depressed groups, who did not differ from each other. In contrast, the depressed group showed a reliable increase in gamma activity from 2001 to 8000 ms (henceforth, "late period") compared to the other groups, who did not differ from each other. At the same time, the schizophrenia group showed a reliable decrease from the early to late period while the depressed group showed the opposite pattern. In addition, self-reported depression and social anhedonia in the schizophrenia group were related to decreased gamma band activity over the entire processing window. Overall, these results suggest that schizophrenia is associated with increased initial reactivity but decreased sustained elaborative processing over time, which could be related to decreased trait positive affect. The results also highlight the importance of considering depressive symptomology and anhedonia when examining emotional abnormalities in schizophrenia.
Collapse
|
22
|
Yang TX, Cui XL, Wang Y, Huang J, Lui SSY, Zhang RT, Cheung EFC, Chan RCK. Effect of emotional cues on prospective memory performance in patients with schizophrenia and major depressive disorder. Schizophr Res 2018; 201:145-150. [PMID: 29803365 DOI: 10.1016/j.schres.2018.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 04/14/2018] [Accepted: 05/13/2018] [Indexed: 10/16/2022]
Abstract
Prospective memory (PM) is the ability to remember to carry out future intentions when prompted by a cue, and previous studies have suggested that emotional PM cues may enhance PM performance. This study examined the influence of emotional cues on PM performance in patients with schizophrenia and major depressive disorder. All participants were required to respond to emotional or neutral PM cues while completing a working memory task. Healthy participants showed improved PM performance with positive and negative cues. Patients with major depressive disorder were not impaired in PM performance and showed significant improvement in PM performance when cued by negative but not positive cues. Patients with schizophrenia had impaired PM performance irrespective of cue emotionality. In addition, the majority of patients with schizophrenia failed to show an emotional enhancement effect, and only those who had normal arousal ratings for negative PM cues showed emotional enhancement effect. These findings show for the first time that patients with schizophrenia exhibit PM impairments even with emotional cues, and suggest that arousal may be a critical factor for schizophrenia patients to utilize emotional cues to facilitate execution of future actions. In patients with major depressive disorder, our findings suggest that the negative bias in attention and retrospective memory may also extend to memory for future actions. These novel findings have both theoretical and clinical implications.
Collapse
Affiliation(s)
- Tian-Xiao Yang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Xi-Long Cui
- Mental Health Institute of the Second Xiangya Hospital, National Technology Institute of Psychiatry, Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Ya Wang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Jing Huang
- Beijing Anding Hospital of Capital Medical University, Beijing, China
| | - Simon S Y Lui
- Castle Peak Hospital, Hong Kong Special Administrative Region
| | - Rui-Ting Zhang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Eric F C Cheung
- Castle Peak Hospital, Hong Kong Special Administrative Region
| | - Raymond C K Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China.
| |
Collapse
|
23
|
Eom TY, Bayazitov IT, Anderson K, Yu J, Zakharenko SS. Schizophrenia-Related Microdeletion Impairs Emotional Memory through MicroRNA-Dependent Disruption of Thalamic Inputs to the Amygdala. Cell Rep 2018; 19:1532-1544. [PMID: 28538174 PMCID: PMC5457478 DOI: 10.1016/j.celrep.2017.05.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/24/2017] [Accepted: 04/27/2017] [Indexed: 11/18/2022] Open
Abstract
Individuals with 22q11.2 deletion syndrome (22q11DS) are at high risk of developing psychiatric diseases such as schizophrenia. Individuals with 22q11DS and schizophrenia are impaired in emotional memory, anticipating, recalling, and assigning a correct context to emotions. The neuronal circuits responsible for these emotional memory deficits are unknown. Here, we show that 22q11DS mouse models have disrupted synaptic transmission at thalamic inputs to the lateral amygdala (thalamo-LA projections). This synaptic deficit is caused by haploinsufficiency of the 22q11DS gene Dgcr8, which is involved in microRNA processing, and is mediated by the increased dopamine receptor Drd2 levels in the thalamus and by reduced probability of glutamate release from thalamic inputs. This deficit in thalamo-LA synaptic transmission is sufficient to cause fear memory deficits. Our results suggest that dysregulation of the Dgcr8–Drd2 mechanism at thalamic inputs to the amygdala underlies emotional memory deficits in 22q11DS. Thalamic inputs to the lateral amygdala (LA) are impaired in 22q11DS mice Thalamo-LA disruption is sufficient to cause associative fear memory deficits Deficiency in microRNA-processing Dgcr8 causes thalamo-LA and fear memory deficits Fear memory deficits in 22q11DS mice are rescued by thalamic Drd2 inhibition
Collapse
Affiliation(s)
- Tae-Yeon Eom
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Ildar T Bayazitov
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Kara Anderson
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jing Yu
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Stanislav S Zakharenko
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| |
Collapse
|
24
|
Kananovich PS, Barkhatova AN. [A history and overview of anhedonia in endogenous mental disorders]. Zh Nevrol Psikhiatr Im S S Korsakova 2017; 117:96-101. [PMID: 28399104 DOI: 10.17116/jnevro20171173196-101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Anhedonia is the inability to experience pleasure. This disorder is heterogeneous across psychiatric disorders and is difficult for measuring and submitting to scientific analysis. Over the last several decades there has been increasing interest in the role that anhedonia plays in various psychopathologies. This article reviews the recent literature on anhedonia and its psychopathological features, which are important for prognosis in affective disorders and schizophrenia. Attempts to dissect various subtypes of anhedonia observed in negative syndrome and depression are reviewed as well.
Collapse
|
25
|
General and emotion-specific neural effects of ketamine during emotional memory formation. Neuroimage 2017; 150:308-317. [PMID: 28232170 DOI: 10.1016/j.neuroimage.2017.02.049] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 01/04/2017] [Accepted: 02/18/2017] [Indexed: 01/07/2023] Open
Abstract
Animal studies suggest that N-methyl-D-aspartate receptor (NMDAR) dependent signalling in limbic and prefrontal regions is critically involved in both cognitive and emotional functions. In humans, ketamine-induced transient, and disorder associated chronic NMDAR hypofunction (i.e. in schizophrenia) has been associated with deficient performance in the domains of memory and higher-order emotional functioning, as well as altered neural activity in the underlying limbic-prefrontal circuits. To model the effects of NMDAR hypofunction on the integration of emotion and cognition the present pharmacological fMRI study applied the NMDAR antagonist ketamine (target plasma level=100ng/ml) to 21 healthy volunteers in a within-subject placebo-controlled crossover design during encoding of neutral, positive and negative pictures. Our results show that irrespective of emotion, ketamine suppressed parahippocampal and medial prefrontal activity. In contrast, ketamine selectively increased amygdala and orbitofrontal activity during successful encoding of negative stimuli. On the network level ketamine generally increased medial prefrontal-parahippocampal coupling while specifically decreasing amygdala-orbitofrontal interplay during encoding of negative stimuli. On the behavioural level, ketamine produced generally decreased memory performance and abolished the emotional enhancement of memory after a wash-out period of 5 days. The present findings suggest that ketamine produces general as well as valence-specific effects during emotional memory formation. The pattern partly overlaps with alterations previously observed in patients with schizophrenia.
Collapse
|
26
|
Lee JS, Jung S, Park IH, Kim JJ. Neural Basis of Anhedonia and Amotivation in Patients with Schizophrenia: The Role of Reward System. Curr Neuropharmacol 2016; 13:750-9. [PMID: 26630955 PMCID: PMC4759314 DOI: 10.2174/1570159x13666150612230333] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 02/25/2015] [Accepted: 02/25/2015] [Indexed: 01/29/2023] Open
Abstract
Anhedonia, the inability to feel pleasure, and amotivation, the lack of motivation, are two
prominent negative symptoms of schizophrenia, which contribute to the poor social and occupational
behaviors in the patients. Recently growing evidence shows that anhedonia and amotivation are tied
together, but have distinct neural correlates. It is important to note that both of these symptoms may derive from deficient
functioning of the reward network. A further analysis into the neuroimaging findings of schizophrenia shows that the
neural correlates overlap in the reward network including the ventral striatum, anterior cingulate cortex and orbitofrontal
cortex. Other neuroimaging studies have demonstrated the involvement of the default mode network in anhedonia. The
identification of a specific deficit in hedonic and motivational capacity may help to elucidate the mechanisms behind
social functioning deficits in schizophrenia, and may also lead to more targeted treatment of negative symptoms.
Collapse
Affiliation(s)
| | | | | | - Jae-Jin Kim
- Department of Psychiatry, Gangnam Severance Hospital, 211 Eonju-ro, Gangnam-gu, Seoul, Korea 135- 720.
| |
Collapse
|
27
|
Abstract
PURPOSE OF REVIEW Anhedonia, traditionally defined as a diminished capacity to experience pleasure, has long been considered a core symptom of schizophrenia. However, recent research calls into question whether individuals with schizophrenia are truly anhedonic, suggesting intact subjective and neurophysiological response to rewarding stimuli in-the-moment. Despite a presumably intact capacity to experience pleasure, people with schizophrenia still engage in fewer reward-seeking behaviors. This discrepancy has been explained as a dissociation between "liking" and "wanting", with dopaminergic and prefrontal influences on incentive salience leading hedonic responses to not effectively translate into motivated behavior. In the current review, the literature on a key aspect of the wanting deficit is reviewed, anticipatory pleasure. RECENT FINDINGS Results provide consistent evidence for impairment in some aspects of anticipatory pleasure (e.g., prospection, associative learning between reward predictive cues and outcomes), and inconsistent evidence for others (e.g., anticipatory affect and affective forecasting). SUMMARY Mechanisms underlying anticipatory pleasure abnormalities in schizophrenia are discussed and a new model of anticipatory pleasure deficits is proposed. Findings suggest that anticipatory pleasure may be a critical component of impairments in wanting that impact motivated behavior in schizophrenia.
Collapse
Affiliation(s)
- Katherine H Frost
- Department of Psychology, State University of New York at Binghamton
| | - Gregory P Strauss
- Department of Psychology, State University of New York at Binghamton
| |
Collapse
|
28
|
Pais-Vieira C, Wing EA, Cabeza R. The influence of self-awareness on emotional memory formation: an fMRI study. Soc Cogn Affect Neurosci 2016; 11:580-92. [PMID: 26645274 PMCID: PMC4814787 DOI: 10.1093/scan/nsv141] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 11/12/2015] [Accepted: 11/14/2015] [Indexed: 01/08/2023] Open
Abstract
Evidence from functional neuroimaging studies of emotional perception shows that when attention is focused on external features of emotional stimuli (external perceptual orienting--EPO), the amygdala is primarily engaged, but when attention is turned inwards towards one's own emotional state (interoceptive self-orienting--ISO), regions of the salience network, such as the anterior insula (AI) and the dorsal anterior cingulate cortex (dACC), also play a major role. Yet, it is unknown if ISO boosts the contributions of AI and dACC not only to emotional 'perception' but also to emotional 'memory'. To investigate this issue, participants were scanned with functional magnetic resonance imaging (fMRI) while viewing emotional and neutral pictures under ISO or EPO, and memory was tested several days later. The study yielded three main findings: (i) emotion boosted perception-related activity in the amygdala during both ISO and EPO and in the right AI exclusively during ISO; (ii) emotion augmented activity predicting subsequent memory in AI and dACC during ISO but not during EPO and (iii) high confidence memory was associated with increased amygdala-dACC connectivity, selectively for ISO encoding. These findings show, for the first time, that ISO promotes emotional memory formation via regions associated with interoceptive awareness of emotional experience, such as AI and dACC.
Collapse
Affiliation(s)
- Carla Pais-Vieira
- Department of Education, University of Aveiro, Aveiro 3810-193, Portugal, and Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, USA
| | - Erik A Wing
- Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, USA
| | - Roberto Cabeza
- Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, USA
| |
Collapse
|
29
|
Strauss GP, Whearty KM, Frost KH, Carpenter WT. An Affective Neuroscience Model of Impaired Approach Motivation in Schizophrenia. NEBRASKA SYMPOSIUM ON MOTIVATION. NEBRASKA SYMPOSIUM ON MOTIVATION 2016; 63:159-203. [PMID: 27627827 DOI: 10.1007/978-3-319-30596-7_6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
30
|
Olsen EK, Bjorkquist OA, Bodapati AS, Shankman SA, Herbener ES. Associations between trait anhedonia and emotional memory deficits in females with schizophrenia versus major depression. Psychiatry Res 2015; 230:323-30. [PMID: 26386600 PMCID: PMC4655124 DOI: 10.1016/j.psychres.2015.09.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 08/05/2015] [Accepted: 09/06/2015] [Indexed: 12/22/2022]
Abstract
Individuals with schizophrenia (SZ) and individuals with major depressive disorder (MDD) demonstrate impaired emotional memory and decreased enjoyment of pleasant experiences (e.g., anhedonia). However, it is unclear whether these impairments reflect similar or different processes in the two diagnostic groups. This study compared emotional memory performance in three groups of females - controls, MDD, and SZ. Given that physical and social trait anhedonia has been shown to differentiate course of illness and emotional functioning within each disorder, the present study also examined whether trait anhedonia related to emotional memory differently in the groups. Participants viewed emotional and neutral images and twenty-four hours later completed an incidental recognition test. SZ participants demonstrated a trend for the worst memory performance. Across all groups, high intensity and negative images were remembered most accurately, while groups were not differentially influenced by the valence of the stimuli. Physical anhedonia was predictive of reduced memory for negative stimuli across all diagnostic groups. Group specific findings indicated that higher levels of social anhedonia were predictive of poorer memory, but only in the SZ group. Effects remained significant when controlling for depressive symptoms. Results are considered in light of the differing role of anhedonia in SZ and MDD.
Collapse
Affiliation(s)
- Emily K. Olsen
- Department of Psychology, University of Illinois at Chicago, 1007 W Harrison Ave, Chicago IL 60607,Corresponding author: Emily K. Olsen, , Phone: 708-669-9914, Fax: 312-413-4122, Address: 1007 W Harrison Ave, Chicago IL 60607, USA
| | - Olivia A. Bjorkquist
- Department of Psychology, University of Illinois at Chicago, 1007 W Harrison Ave, Chicago IL 60607
| | - Anjuli S. Bodapati
- Department of Psychology, University of Illinois at Chicago, 1007 W Harrison Ave, Chicago IL 60607
| | - Stewart A. Shankman
- Department of Psychology, University of Illinois at Chicago, 1007 W Harrison Ave, Chicago IL 60607, Department of Psychiatry, University of Illinois at Chicago, 912 S Wood St, Chicago IL 60612
| | - Ellen S. Herbener
- Department of Psychology, University of Illinois at Chicago, 1007 W Harrison Ave, Chicago IL 60607, Department of Psychiatry, University of Illinois at Chicago, 912 S Wood St, Chicago IL 60612
| |
Collapse
|
31
|
Fairfield B, Mammarella N, Palumbo R, Di Domenico A. Emotional Meta-Memories: A Review. Brain Sci 2015; 5:509-20. [PMID: 26569320 PMCID: PMC4701025 DOI: 10.3390/brainsci5040509] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/08/2015] [Accepted: 11/03/2015] [Indexed: 12/19/2022] Open
Abstract
Emotional meta-memory can be defined as the knowledge people have about the strategies and monitoring processes that they can use to remember their emotionally charged memories. Although meta-memory per se has been studied in many cognitive laboratories for many years, fewer studies have explicitly focused on meta-memory for emotionally charged or valenced information. In this brief review, we analyzed a series of behavioral and neuroimaging studies that used different meta-memory tasks with valenced information in order to foster new research in this direction, especially in terms of commonalities/peculiarities of the emotion and meta-memory interaction. In addition, results further support meta-cognitive models that take emotional factors into account when defining meta-memory per se.
Collapse
Affiliation(s)
- Beth Fairfield
- Department of Psychological Sciences, Health and Territory, University of Chieti, Via deiVestini 31, Chieti 66013, Italy.
| | - Nicola Mammarella
- Department of Psychological Sciences, Health and Territory, University of Chieti, Via deiVestini 31, Chieti 66013, Italy.
| | - Rocco Palumbo
- Department of Psychological Sciences, Health and Territory, University of Chieti, Via deiVestini 31, Chieti 66013, Italy.
- Schepens Eye Research Institute, Harvard Medical School, 20 Stanford St., Boston, MA 02149, USA.
| | - Alberto Di Domenico
- Department of Psychological Sciences, Health and Territory, University of Chieti, Via deiVestini 31, Chieti 66013, Italy.
| |
Collapse
|
32
|
Edwards CJ, Cella M, Tarrier N, Wykes T. Investigating the empirical support for therapeutic targets proposed by the temporal experience of pleasure model in schizophrenia: A systematic review. Schizophr Res 2015; 168:120-44. [PMID: 26342966 DOI: 10.1016/j.schres.2015.08.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 08/06/2015] [Accepted: 08/07/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Anhedonia and amotivation are substantial predictors of poor functional outcomes in people with schizophrenia and often present a formidable barrier to returning to work or building relationships. The Temporal Experience of Pleasure Model proposes constructs which should be considered therapeutic targets for these symptoms in schizophrenia e.g. anticipatory pleasure, memory, executive functions, motivation and behaviours related to the activity. Recent reviews have highlighted the need for a clear evidence base to drive the development of targeted interventions. OBJECTIVE To review systematically the empirical evidence for each TEP model component and propose evidence-based therapeutic targets for anhedonia and amotivation in schizophrenia. METHOD Following PRISMA guidelines, PubMed and PsycInfo were searched using the terms "schizophrenia" and "anhedonia". Studies were included if they measured anhedonia and participants had a diagnosis of schizophrenia. The methodology, measures and main findings from each study were extracted and critically summarised for each TEP model construct. RESULTS 80 independent studies were reviewed and executive functions, emotional memory and the translation of motivation into actions are highlighted as key deficits with a strong evidence base in people with schizophrenia. However, there are many relationships that are unclear because the empirical work is limited by over-general tasks and measures. CONCLUSIONS Promising methods for research which have more ecological validity include experience sampling and behavioural tasks assessing motivation. Specific adaptations to Cognitive Remediation Therapy, Cognitive Behavioural Therapy and the utilisation of mobile technology to enhance representations and emotional memory are recommended for future development.
Collapse
Affiliation(s)
- Clementine J Edwards
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, Kings College London, UK.
| | - Matteo Cella
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, Kings College London, UK.
| | - Nicholas Tarrier
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, Kings College London, UK.
| | - Til Wykes
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, Kings College London, UK.
| |
Collapse
|
33
|
Dieleman S, van der Veen F, van Beveren N, Röder C. Preserved emotional memory modulation in first episode psychosis. Psychiatry Res 2015; 226:301-7. [PMID: 25639371 DOI: 10.1016/j.psychres.2015.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 01/05/2015] [Accepted: 01/10/2015] [Indexed: 02/08/2023]
Abstract
Although patients with schizophrenia have severe memory impairments and emotional deficits, studies investigating emotional memory modulation (EMM) in schizophrenia show contradictory results, possibly due to methodological differences and small group size. We investigated whether impaired EMM is already present in First Episode Psychosis (FEP) and whether impairments in EMM are task or stimulus dependent. Forty-five FEP and thirty-seven Healthy Control (HC) male participants matched for age performed visual and verbal short-term (immediate recall) and long-term (after 24h recognition) memory tasks with neutral, negative and positive stimuli. On all tasks overall memory performance for FEP was significantly below that of HC. Although EMM varied by task and type of stimulus, none of the tasks showed a difference in EMM between FEP and HC. There were no differences between FEP and HC in the way emotion modulates different memory domains. This could mean that EMM is spared in the early course of schizophrenia.
Collapse
Affiliation(s)
- Sieds Dieleman
- Erasmus University Medical Center, Department of Psychiatry, P.O. box 2040, 3000 CA Rotterdam, The Netherlands; Bavo-Europoort Psychiatric Institute, Oudedijk 76, 3062 AG Rotterdam, The Netherlands.
| | - Frederik van der Veen
- Erasmus University, Institute of Psychology, Woudestein, T13-01, P.O. box 1738, 3000 DR Rotterdam, The Netherlands.
| | - Nico van Beveren
- Erasmus University Medical Center, Department of Psychiatry, P.O. box 2040, 3000 CA Rotterdam, The Netherlands; Delta Center for Mental Health Care, Postbus 800, 3170 DZ Poortugaal, The Netherlands.
| | - Christian Röder
- Erasmus University Medical Center, Department of Psychiatry, P.O. box 2040, 3000 CA Rotterdam, The Netherlands.
| |
Collapse
|
34
|
Neurophysiological correlates of emotional directed-forgetting in persons with Schizophrenia: An event-related brain potential study. Int J Psychophysiol 2015; 98:612-23. [PMID: 25620125 DOI: 10.1016/j.ijpsycho.2015.01.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 01/10/2015] [Accepted: 01/16/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND Recent research has shown that patients with schizophrenia (SCZ) exhibit reduced directed forgetting (DF) for negative words, suggesting impaired ability to instantiate goal-directed inhibition in order to suppress a competing, emotion-driven responses (i.e., emotional memory enhancement). However, disrupted inhibition is not the only possible mechanism by which patients could manifest reduced emotional DF. Therefore, the primary objective of the current study was to use event-related brain potential (ERP) recordings to investigate alternative hypotheses. METHODS ERPs were recorded while patients and controls completed an item-method DF paradigm using negative and neutral words. The N2 indexed goal-directed inhibition of to-be-forgotten items. The late positive potential (LPP) indexed emotional memory enhancement for negative study items. The P300 indexed selective rehearsal of to-be-remembered items. RESULTS The SCZ group exhibited a reduced DF effect overall, but this was not modulated by emotion. N2 amplitude at anterior sites was larger for forget versus remember cues in the control group only, but this effect was not modulated by emotion. LPP amplitude was greater for negative versus neutral words in both groups, independent of region. P300 amplitude at posterior sites was greater for remember versus forget cues in the control group only. DISCUSSION These data suggest that reduced DF in SCZ may be due, in part, to both diminished goal-directed inhibition of to-be-forgotten items and reduced selective rehearsal of to-be-remembered items. However, these data do not support the hypothesis that goal-directed, inhibitory processes are disrupted by competing, emotion-driven processes in SCZ. Patients' ERP data also suggested that they did not exhibit disproportionately heightened encoding of emotional stimuli, nor did they have deficient selective rehearsal of to-be-remembered emotional items.
Collapse
|
35
|
Trémeau F, Antonius D, Nolan K, Butler P, Javitt DC. Immediate affective motivation is not impaired in schizophrenia. Schizophr Res 2014; 159:157-63. [PMID: 25159096 DOI: 10.1016/j.schres.2014.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 07/30/2014] [Accepted: 08/04/2014] [Indexed: 11/19/2022]
Abstract
BACKGROUND Among the various cognitive and affective evaluations that contribute to decisions about whether to engage in a future activity, three affective evaluations are particularly relevant: 1) interest in the activity itself, 2) the pleasure anticipated from the activity and 3) the excitement experienced while looking forward to the activity. In addition to these pre-activity evaluations, affective evaluations that are done after the activity is completed impact people's motivation to repeat the same activity. Although extant research suggests that these affective processes may be impaired in schizophrenia, it is not clear whether these impairments are mostly secondary to cognitive deficits. METHOD In three independent studies utilizing simple laboratory tasks with minimal cognitive demands, patients with schizophrenia or schizoaffective disorder and healthy control subjects evaluated their pleasure, interest, and excitement immediately before and after completing the tasks. RESULTS Patients' anticipated pleasure and posttest evaluations of pleasure and interest were significantly greater than controls'. No group differences were found for excitement. In patients, there were significant negative correlations between anticipated pleasure, pretest excitement and depression scores, and between pretest interest and negative symptoms. CONCLUSIONS In these experiments, immediate affective evaluations reported by participants with schizophrenia or schizoaffective disorder were greater or similar to controls'. This finding is consistent with recent affective research showing that experiences of pleasure are intact in schizophrenia. These results emphasize the need to disentangle affective from cognitive processes in order to better understand the complex impairments present in schizophrenia spectrum disorders.
Collapse
Affiliation(s)
- Fabien Trémeau
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States; Department of Psychiatry, New York University School of Medicine, New York, NY, United States; Rockland Psychiatric Center, Orangeburg, NY, United States; Department of Psychiatry, Columbia University, New York, NY, United States.
| | - Daniel Antonius
- Department of Psychiatry, New York University School of Medicine, New York, NY, United States; University at Buffalo, State University of New York, Buffalo, NY, United States
| | - Karen Nolan
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States; Department of Psychiatry, New York University School of Medicine, New York, NY, United States
| | - Pamela Butler
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States; Department of Psychiatry, New York University School of Medicine, New York, NY, United States
| | - Daniel C Javitt
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States; Department of Psychiatry, Columbia University, New York, NY, United States
| |
Collapse
|
36
|
Spei E, Muenzenmaier K, Conan M, Battaglia J. Trauma-informed cognitive remediation group therapy. Int J Group Psychother 2014; 64:381-9. [PMID: 24911229 DOI: 10.1521/ijgp.2014.64.3.381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
This brief report presents the rationale for the importance of integrating trauma therapy with cognitive remediation in order to enhance both component interventions in the treatment of serious mental illness. It describes a general format that allows the above integration and suggests that future studies should investigate the efficacy of the proposed group design.
Collapse
|
37
|
Open, randomized trial of the effects of aripiprazole versus risperidone on social cognition in schizophrenia. Eur Neuropsychopharmacol 2014; 24:575-84. [PMID: 24418213 DOI: 10.1016/j.euroneuro.2013.12.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 12/03/2013] [Accepted: 12/10/2013] [Indexed: 11/21/2022]
Abstract
To date, only few studies have examined the impact of medication on social cognition and none have examined the effects of aripiprazole in this respect. The goal of this 8-week, randomized, multicenter, open-label study was to examine the effects of aripiprazole and risperidone on social cognition and neurocognition in individuals with schizophrenia. Eighty schizophrenia patients (DSM-IV-TR) aged 16-50 years were administered multiple computerized measures of social cognition and neurocognition including reaction times at baseline and the end of week 8. Social functioning was mapped with the Social Functioning scale and Quality of Life scale. The study ran from June 2005 to March 2011. Scores on social cognitive and neurocognitive tests improved with both treatments, as did reaction time. There were few differences between the two antipsychotics on (social) cognitive test-scores. The aripiprazole group performed better (more correct items) on symbol substitution (P=.003). Aripiprazole was also superior to risperidone on reaction time for emotional working memory and working memory (P=.006 and P=.023, respectively). Improvements on these tests were correlated with social functioning. In conclusion, aripiprazole and risperidone showed a similar impact on social cognitive test-scores. However, aripiprazole treatment produced a greater effect on patients' processing speed compared to risperidone, with these improvements being associated with concurrent improvements in social functioning. Further research on the long-term effects of aripiprazole on cognition is warranted.
Collapse
|
38
|
Harvey PO, Lepage M. Neural correlates of recognition memory of social information in people with schizophrenia. J Psychiatry Neurosci 2014; 39:97-109. [PMID: 24119792 PMCID: PMC3937286 DOI: 10.1503/jpn.130007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND Social dysfunction is a hallmark characteristic of schizophrenia. Part of it may stem from an inability to efficiently encode social information into memory and retrieve it later. This study focused on whether patients with schizophrenia show a memory boost for socially relevant information and engage the same neural network as controls when processing social stimuli that were previously encoded into memory. METHODS Patients with schizophrenia and healthy controls performed a social and nonsocial picture recognition memory task while being scanned. We calculated memory performance using d'. Our main analysis focused on brain activity associated with recognition memory of social and nonsocial pictures. RESULTS Our study included 28 patients with schizophrenia and 26 controls. Healthy controls demonstrated a memory boost for socially relevant information. In contrast, patients with schizophrenia failed to show enhanced recognition sensitivity for social pictures. At the neural level, patients did not engage the dorsomedial prefrontal cortex (DMPFC) as much as controls while recognizing social pictures. LIMITATIONS Our study did not include direct measures of self-referential processing. All but 3 patients were taking antipsychotic medications, which may have altered both the behavioural performance during the picture recognition memory task and brain activity. CONCLUSION Impaired social memory in patients with schizophrenia may be associated with altered DMPFC activity. A reduction of DMPFC activity may reflect less involvement of self-referential processes during memory retrieval. Our functional MRI results contribute to a better mapping of the neural disturbances associated with social memory impairment in patients with schizophrenia and may facilitate the development of innovative treatments, such as transcranial magnetic stimulation.
Collapse
Affiliation(s)
- Philippe-Olivier Harvey
- Correspondence to: P.-O. Harvey, Department of Psychiatry, McGill University, Douglas Mental Health University Institute, 6875 LaSalle Blvd, Montréal QC H4H 1R3;
| | | |
Collapse
|
39
|
Strauss GP, Waltz JA, Gold JM. A review of reward processing and motivational impairment in schizophrenia. Schizophr Bull 2014; 40 Suppl 2:S107-16. [PMID: 24375459 PMCID: PMC3934394 DOI: 10.1093/schbul/sbt197] [Citation(s) in RCA: 299] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This article reviews and synthesizes research on reward processing in schizophrenia, which has begun to provide important insights into the cognitive and neural mechanisms associated with motivational impairments. Aberrant cortical-striatal interactions may be involved with multiple reward processing abnormalities, including: (1) dopamine-mediated basal ganglia systems that support reinforcement learning and the ability to predict cues that lead to rewarding outcomes; (2) orbitofrontal cortex-driven deficits in generating, updating, and maintaining value representations; (3) aberrant effort-value computations, which may be mediated by disrupted anterior cingulate cortex and midbrain dopamine functioning; and (4) altered activation of the prefrontal cortex, which is important for generating exploratory behaviors in environments where reward outcomes are uncertain. It will be important for psychosocial interventions targeting negative symptoms to account for abnormalities in each of these reward processes, which may also have important interactions; suggestions for novel behavioral intervention strategies that make use of external cues, reinforcers, and mobile technology are discussed.
Collapse
Affiliation(s)
- Gregory P. Strauss
- Department of Psychology, State University of New York at Binghamton, Binghamton, NY;,*To whom correspondence should be addressed; Department of Psychology, State University of New York at Binghamton, PO Box 6000, Binghamton, NY 13902; tel: 607-777-5408, fax: 607-777-4890, e-mail:
| | - James A. Waltz
- Department of Psychiatry, University of Maryland School of Medicine and Maryland Psychiatric Research Center, Baltimore, MD
| | - James M. Gold
- Department of Psychiatry, University of Maryland School of Medicine and Maryland Psychiatric Research Center, Baltimore, MD
| |
Collapse
|
40
|
Guo S, Kendrick KM, Yu R, Wang HLS, Feng J. Key functional circuitry altered in schizophrenia involves parietal regions associated with sense of self. Hum Brain Mapp 2014; 35:123-39. [PMID: 23008170 PMCID: PMC6869177 DOI: 10.1002/hbm.22162] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 06/13/2012] [Accepted: 06/15/2012] [Indexed: 11/11/2022] Open
Abstract
There is still no clear consensus as to which of the many functional and structural changes in the brain in schizophrenia are of most importance, although the main focus to date has been on those in the frontal and cingulate cortices. In the present study, we have used a novel holistic approach to identify brain-wide functional connectivity changes in medicated schizophrenia patients, and functional connectivity changes were analyzed using resting-state fMRI data from 69 medicated schizophrenia patients and 62 healthy controls. As far as we are aware, this is the largest population reported in the literature for a resting-state study. Voxel-based morphometry was also used to investigate gray and white matter volume changes. Changes were correlated with illness duration/symptom severity and a support vector machine analysis assessed predictive validity. A network involving the inferior parietal lobule, superior parietal gyrus, precuneus, superior marginal, and angular gyri was by far the most affected (68% predictive validity compared with 82% using all connections) and different components correlated with illness duration and positive and negative symptom severity. Smaller changes occurred in emotional memory and sensory and motor processing networks along with weakened interhemispheric connections. Our findings identify the key functional circuitry altered in schizophrenia involving the default network midline cortical system and the cortical mirror neuron system, both playing important roles in sensory and cognitive processing and particularly self-processing, all of which are affected in this disorder. Interestingly, the functional connectivity changes with the strongest links to schizophrenia involved parietal rather than frontal regions.
Collapse
Affiliation(s)
- Shuixia Guo
- College of Mathematics and Computer Science, Key Laboratory of High Performance Computing and Stochastic Information Processing, Ministry of Education of China, Hunan Normal University, Changsha, Hunan, China
| | | | | | | | | |
Collapse
|
41
|
Patrick RE, Christensen BK. Reduced directed forgetting for negative words suggests schizophrenia-related disinhibition of emotional cues. Psychol Med 2013; 43:2289-2299. [PMID: 23510530 DOI: 10.1017/s0033291713000445] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Several psychological and neurobiological models imply that patients with schizophrenia (SCZ) are more inclined to utilize emotional cues as response determinants to the detriment of more task-appropriate cognitive or contextual cues. However, there is a lack of behavioural data from human clinical studies to support this assertion. Therefore, it is important to evaluate the performance of persons with SCZ using tasks designed to index the resolution between competing emotional and cognitive determinants of goal-directed behaviour. METHOD The current study employed a list-method, emotional directed-forgetting (DF) paradigm designed to invoke inhibitory mechanisms necessary to override emotional memory enhancement for successful task completion. Four psycholinguistically matched lists were constructed that were comprised of five negative, five positive, and five neutral words. RESULTS Compared with healthy controls, individuals with SCZ showed a reduced DF effect overall. When broken down according to valence, this effect was only observed for negative words, which, in turn, resulted from reduced forgetting of list 1 words following the forget cue. CONCLUSIONS These results indicate that individuals with SCZ were less able to engage strategic inhibitory mechanisms for the purpose of overriding recall of negative stimuli when tasks demand call for such action. Thus, our data support the theoretical assertion that SCZ patients have difficulty utilizing cognitive or contextual cues as determinants of goal-directed behaviour in the face of countermanding emotional cues.
Collapse
Affiliation(s)
- R E Patrick
- Department of Psychiatry and Behavioural Neuroscience, McMaster University, Hamilton, ON, Canada
| | | |
Collapse
|
42
|
Peters MJV, Hauschildt M, Moritz S, Jelinek L. Impact of emotionality on memory and meta-memory in schizophrenia using video sequences. J Behav Ther Exp Psychiatry 2013; 44:77-83. [PMID: 22925714 DOI: 10.1016/j.jbtep.2012.07.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 06/06/2012] [Accepted: 07/09/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND AND OBJECTIVES A vast amount of memory and meta-memory research in schizophrenia shows that these patients perform worse on memory accuracy and hold false information with strong conviction compared to healthy controls. So far, studies investigating these effects mainly used traditional static stimulus material like word lists or pictures. The question remains whether these memory and meta-memory effects are also present in (1) more near-life dynamic situations (i.e., using standardized videos) and (2) whether emotionality has an influence on memory and meta-memory deficits (i.e., response confidence) in schizophrenia compared to healthy controls. METHOD Twenty-seven schizophrenia patients and 24 healthy controls were administered a newly developed emotional video paradigm with five videos differing in emotionality (positive, two negative, neutral, and delusional related). After each video, a recognition task required participants to make old-new discriminations along with confidence ratings, investigating memory accuracy and meta-memory deficits in more dynamic settings. RESULTS For all but the positively valenced video, patients recognized fewer correct items compared to healthy controls, and did not differ with regard to the number of false memories for related items. In line with prior findings, schizophrenia patients showed more high-confident responses for misses and false memories for related items but displayed underconfidence for hits when compared to healthy controls, independent of emotionality. LIMITATIONS Limited sample size and control group; combined valence and arousal indicator for emotionality; general psychopathology indicator. CONCLUSIONS Emotionality differentially moderated memory accuracy, biases in schizophrenia patients compared to controls. Moreover, the meta-memory deficits identified in static paradigms also manifest in more dynamic settings near-life settings and seem to be independent of emotionality.
Collapse
Affiliation(s)
- Maarten J V Peters
- Department of Clinical Psychological Science, Faculty of Psychology and Neuroscience, PO Box 616, 6200 MD, Maastricht University, The Netherlands.
| | | | | | | |
Collapse
|
43
|
Dieleman S, Röder CH. Emotional memory modulation in schizophrenia: an overview. Acta Psychiatr Scand 2013; 127:183-94. [PMID: 23216101 DOI: 10.1111/acps.12047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/08/2012] [Indexed: 11/28/2022]
Abstract
OBJECTIVE In healthy controls, the emotional charge of stimuli influences how well stimuli are remembered. Although patients with schizophrenia (SCZ) have deficits in memory and in emotional processing, studies on emotional memory modulation (EMM) in SCZ report contradictory results. The aim of this review was to investigate whether methodological differences could explain these contradictory results. METHOD We reviewed the literature to investigate whether task differences could explain these differences. Due to the methodological differences, a meta-analysis was not possible. RESULTS Fourteen studies were identified that used a total of 22 tasks to study EMM in patients with SCZ. Two-thirds of the tasks showed no differences in EMM between patients with SCZ and healthy controls. Differences in EMM were found more often when long-term compared to short-term memory was measured, when memory instructions were implicit instead of explicit and when stronger emotional stimuli were used. An overall memory deficit or the mode of retrieval was not related to EMM. CONCLUSION Deficits in EMM in long-term compared to short-term memory point toward impaired emotional modulation of memory consolidation. Reduced EMM on implicit, but not explicit, tasks suggests a deficit in unconsciously using emotional content to modulate memory.
Collapse
Affiliation(s)
- S Dieleman
- Department of Psychiatry, Erasmus MC, Rotterdam, The Netherlands.
| | | |
Collapse
|
44
|
Strauss GP, Catalano LT, Llerena K, Gold JM. The processing of emotional stimuli during periods of limited attentional resources in schizophrenia. JOURNAL OF ABNORMAL PSYCHOLOGY 2013; 122:492-505. [PMID: 23421529 DOI: 10.1037/a0031212] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
When participants are asked to attend to two target stimuli in a rapid serial visual presentation sequence, the successful identification of the 1st target (T1) leads to transient impairment in reporting the 2nd target (T2)--this effect is known as the attentional blink (AB). In healthy individuals, this AB effect is either diminished or accentuated when emotional stimuli are presented in the T2 or T1 positions, respectively, suggesting that affective content influences bottom-up (i.e., exogenous) attention. In the current study, we conducted two separate experiments using the Emotional Attentional Blink paradigm where emotional words were presented in the T2 or T1 position to determine whether schizophrenia patients with high and low negative symptoms differ from controls in the extent to which emotional stimuli influence bottom-up attentional processes. Participants included 33 schizophrenia patients and 28 controls in Experiment 1 (T2 Task), and 30 schizophrenia patients and 24 controls in Experiment 2 (T1 Task). In both experiments, patients were divided into high (HI-NEG) and low (LOW-NEG) negative symptom subgroups using the Scale for the Assessment of Negative Symptoms. Results of Experiment 1 indicated that controls and LOW-NEG patients displayed the typical pattern of AB sparing at early lags for emotional relative to neutral words; however, HI-NEG patients showed no difference in T2 accuracy between emotional and neutral stimuli. Results of Experiment 2 indicated that controls and LOW-NEG patients displayed reduced T2 accuracy following unpleasant T1 stimuli, while HI-NEG patients showed no decrement in T2 accuracy after emotional T1s. Across both experiments, findings suggest that emotional stimuli have a bottom-up competitive advantage in LOW-NEG patients and controls; however, this bottom-up advantage is absent in HI-NEG patients.
Collapse
Affiliation(s)
- Gregory P Strauss
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21228, USA.
| | | | | | | |
Collapse
|
45
|
Strauss GP, Allen DN. Emotional Verbal Learning Test: development and psychometric properties. Arch Clin Neuropsychol 2013; 28:435-51. [PMID: 23391503 DOI: 10.1093/arclin/act007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Memory deficits are a common feature of neurological and psychiatric disorders. Measures designed to evaluate memory in clinical populations have distinguished between memory for verbal and visual information; however, few tests assess the recall and recognition of emotional information, despite evidence suggesting that brain regions are differentially involved in memory for emotional and neutral stimuli and that affective disturbances are common in psychiatric and neurological disorders. The present study reports the test development and psychometric properties of the Emotional Verbal Learning Test (EVLT), a new neuropsychological measure that allows for the examination of emotional learning and memory. Psychometric analyses indicated that the EVLT has good internal consistency and test-retest reliability, as well as discriminant validity, clinical utility, and sensitivity to mood-congruency effects. This new measure has potential to be a valuable research and a clinical tool in the assessment of emotional memory and learning in healthy individuals and persons with neuropsychiatric disorders.
Collapse
Affiliation(s)
- Gregory P Strauss
- Department of Psychiatry and Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD 21228, USA.
| | | |
Collapse
|
46
|
Abstract
AIM OF THE STUDY Emotion recognition is a domain in which deficits have been reported in schizophrenia. A number of emotion classification studies have indicated that emotion processing deficits in schizophrenia are more pronounced for negative affects. Given the difficulty of developing material suitable for the study of these emotional deficits, it would be interesting to examine whether patients suffering from schizophrenia are responsive to positively and negatively charged emotion-related words that could be used within the context of remediation strategies. The emotional perception of words was examined in a clinical experiment involving schizophrenia patients. This emotional perception was expressed by the patients in terms of the valence associated with the words. In the present study, we investigated whether schizophrenia patients would assign the same negative and positive valences to words as healthy individuals. METHODS Twenty volunteer, clinically stable, outpatients from the Psychiatric Service of the University Hospital of Clermont-Ferrand were recruited. Diagnoses were based on DSM-IV criteria. Global psychiatric symptoms were assessed using the Positive and Negative Symptoms Scale (PANSS). The patients had to evaluate the emotional valence of a set of 300 words on a 5-point scale ranging from "very unpleasant" to "very pleasant". RESULTS . The collected results were compared with those obtained by Bonin et al. (2003) [13] from 97 University students. Correlational analyses of the two studies revealed that the emotional valences were highly correlated, i.e. the schizophrenia patients estimated very similar emotional valences. More precisely, it was possible to examine three separate sets of 100 words each (positive words, neutral words and negative words). The positive words that were evaluated were the more positive words from the norms collected by Bonin et al. (2003) [13], and the negative words were the more negative examples taken from these norms. The neutral words reflected the more neutral emotional valences collected. The results suggested that the emotional valences for the negative words were significantly greater in the patients than is observed in the collected norms (P<0.001). Moreover, the emotional valence associated with positive words was significantly lower in the patients than in the collected norms (P<0.001). Nevertheless, only 16 words differed significantly in terms of evaluated emotional valence between patients and young adults. CONCLUSIONS Despite their overall emotional impairments, the patients with schizophrenia had a very similar perception of word valence as controls. This result suggests that the emotional perception of most emotional words is preserved. This research provides data important to consider during rehabilitation. Moreover, this study will make it possible to select stimuli for use in future studies of emotion in patients.
Collapse
|
47
|
Strauss GP, Lee BG, Waltz JA, Robinson BM, Brown JK, Gold JM. Cognition-emotion interactions are modulated by working memory capacity in individuals with schizophrenia. Schizophr Res 2012; 141:257-61. [PMID: 22968207 PMCID: PMC3466085 DOI: 10.1016/j.schres.2012.08.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 08/09/2012] [Accepted: 08/14/2012] [Indexed: 11/28/2022]
Abstract
Prior research provides evidence for aberrant cognition-emotion interactions in schizophrenia. In the current study, we aimed to extend these findings by administering the "distractor devaluation" task to 40 individuals with schizophrenia and 32 demographically matched healthy controls. The task consisted of a simple visual search task for neutral faces, followed by an evaluative response made for one of the search items (or a novel item) to determine whether prior attentional selection results in a devaluation of a previously unattended stimulus. We also manipulated working memory demands by preceding the search array with a memory array that required subjects to hold 0, 1, or 2 items in working memory while performing the search array and devaluation task, to determine whether the normative process by which attentional states influence evaluative response is limited by working memory capacity. Results indicated that individuals with schizophrenia demonstrated the typical distractor devaluation effect at working memory load 0, suggesting intact evaluative response. However, the devaluation effect was absent at working memory loads of 1 and 2, suggesting that normal evaluative responses can be abolished in people with schizophrenia when working memory capacity is exceeded. Thus, findings provide further evidence for normal evaluative response in schizophrenia, but clarify that these normal experiences may not hold when working memory demands are too high.
Collapse
Affiliation(s)
- Gregory P. Strauss
- Correspondence concerning this article should be addressed to Gregory P. Strauss, Ph.D., . Phone: +1-410-402-6104. Fax: +1-410-402-7198. University of Maryland School of Medicine, Maryland Psychiatric Research Center, P.O. Box 21247, Baltimore, MD, 21228 USA
| | | | | | | | | | | |
Collapse
|
48
|
Lee JS, Chun JW, Kang JI, Kang DI, Park HJ, Kim JJ. Hippocampus and nucleus accumbens activity during neutral word recognition related to trait physical anhedonia in patients with schizophrenia: an fMRI study. Psychiatry Res 2012; 203:46-53. [PMID: 22867952 DOI: 10.1016/j.pscychresns.2011.09.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 08/24/2011] [Accepted: 09/07/2011] [Indexed: 01/19/2023]
Abstract
Emotional memory dysfunction may be associated with anhedonia in schizophrenia. This study aimed to investigate the neurobiological basis of emotional memory and its relationship with anhedonia in schizophrenia specifically in emotional memory relate brain regions of interest (ROIs) including the amygdala, hippocampus, nucleus accumbens, and ventromedial prefrontal cortex. Fourteen patients with schizophrenia and 16 healthy subjects performed a word-image associative encoding task, during which a neutral word was presented with a positive, neutral, or control image. Subjects underwent functional magnetic resonance imaging while performing the recognition task. Correlation analyses were performed between the percent signal change (PSC) in the ROIs and the anhedonia scores. We found no group differences in recognition accuracy and reaction time. The PSC of the hippocampus in the positive and neutral conditions, and the PSC in the nucleus accumbens in the control condition, appeared to be negatively correlated with the Physical Anhedonia Scale (PAS) scores in patients with schizophrenia, while significant correlations with the PAS scores were not observed in healthy subjects. This study provides further evidences of the role of the hippocampus and nucleus accumbens in trait physical anhedonia and possible associations between emotional memory deficit and trait physical anhedonia in patients with schizophrenia.
Collapse
Affiliation(s)
- Jung Suk Lee
- Department of Psychiatry, Bundang Jesaeng Hospital, Seohyeon-dong, Bundang-gu, Seongnam, Gyeonggi-do, South Korea
| | | | | | | | | | | |
Collapse
|
49
|
Yan C, Cao Y, Zhang Y, Song LL, Cheung EFC, Chan RCK. Trait and state positive emotional experience in schizophrenia: a meta-analysis. PLoS One 2012; 7:e40672. [PMID: 22815785 PMCID: PMC3399884 DOI: 10.1371/journal.pone.0040672] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 06/12/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Prior meta-analyses indicated that people with schizophrenia show impairment in trait hedonic capacity but retain their state hedonic experience (valence) in laboratory-based assessments. Little is known about what is the extent of differences for state positive emotional experience (especially arousal) between people with schizophrenia and healthy controls. It is also not clear whether negative symptoms and gender effect contribute to the variance of positive affect. METHODS AND FINDINGS The current meta-analysis examined 21 studies assessing state arousal experience, 40 studies measuring state valence experience, and 47 studies assessing trait hedonic capacity in schizophrenia. Patients with schizophrenia demonstrated significant impairment in trait hedonic capacity (Cohen's d = 0.81). However, patients and controls did not statistically differ in state hedonic (valence) as well as exciting (arousal) experience to positive stimuli (Cohen's d = -0.24 to 0.06). They also reported experiencing relatively robust state aversion and calmness to positive stimuli compared with controls (Cohen's d = 0.75, 0.56, respectively). Negative symptoms and gender contributed to the variance of findings in positive affect, especially trait hedonic capacity in schizophrenia. CONCLUSIONS Our findings suggest that schizophrenia patients have no deficit in state positive emotional experience but impairment in "noncurrent" hedonic capacity, which may be mediated by negative symptoms and gender effect.
Collapse
Affiliation(s)
- Chao Yan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
- Graduate School, Chinese Academy of Sciences, Beijing, China
| | - Yuan Cao
- Department of Applied Social Studies, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Yang Zhang
- College of Life Science and Bio-engineering, Beijing University of Technology, Beijing, China
| | - Li-Ling Song
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Eric F. C. Cheung
- Castle Peak Hospital, Hong Kong Special Administrative Region, China
| | - Raymond C. K. Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
50
|
Abstract
OBJECTIVE Previous research provides evidence for discrepancies in various types of emotional self-report in individuals with schizophrenia; patients and healthy subjects report similar levels of positive emotion when reporting current feelings, yet patients report lower levels of positive emotion when reporting on noncurrent feelings. Such apparent discrepancies, which have come to be termed the "emotion paradox" in schizophrenia, have complicated our understanding of what anhedonia actually reflects in this patient population. The authors sought to resolve this paradox. METHOD The authors reviewed the empirical literature on anhedonia and emotional experience in schizophrenia through the lens of the accessibility model of emotional self-report, a well-validated model of emotional self-report developed in the affective science literature that clarifies the sources of emotion knowledge that individuals access when providing different types of self-report. The authors used this model to propose a resolution to the "emotion paradox" and to provide a new psychological conceptualization of anhedonia. RESULTS Data are presented in support of this new perspective on anhedonia and to demonstrate how cognitive impairments may influence reports of noncurrent feelings in schizophrenia. CONCLUSIONS The authors conclude that anhedonia should no longer be considered an experiential deficit or a diminished "capacity" for pleasure in patients with schizophrenia. Rather, anhedonia reflects a set of beliefs related to low pleasure that surface when patients are asked to report their noncurrent feelings. Encoding and retrieval processes may serve to maintain these beliefs despite contrary real-world pleasurable experiences. Implications for assessment and treatment are discussed in relation to this new conceptualization of anhedonia.
Collapse
Affiliation(s)
- Gregory P. Strauss
- Correspondence concerning this article should be addressed to Gregory P. Strauss, Ph.D., . Phone: +1-410-402-6104. Fax: +1-410-402-7198. University of Maryland School of Medicine, Maryland Psychiatric Research Center, P.O. Box 21247, Baltimore, MD, 21228 USA
| | | |
Collapse
|