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Fitzgerald PJ. Frontal Alpha Asymmetry and Its Modulation by Monoaminergic Neurotransmitters in Depression. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE : THE OFFICIAL SCIENTIFIC JOURNAL OF THE KOREAN COLLEGE OF NEUROPSYCHOPHARMACOLOGY 2024; 22:405-415. [PMID: 39069680 PMCID: PMC11289606 DOI: 10.9758/cpn.23.1138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 01/22/2024] [Accepted: 02/13/2024] [Indexed: 07/30/2024]
Abstract
Frontal alpha asymmetry (FAA) is an electroencephalography (EEG) measure that quantifies trait-like left versus right hemisphere lateralization in alpha power. Increased FAA indicates relatively greater left than right frontal cortex activation and is associated with enhanced reward-related approach behaviors rather than avoidance or withdrawal. Studies dating back several decades have often suggested that having greater FAA supports enhanced positive affect and protection against major depressive disorder (MDD), whereas having greater right frontal activation (i.e., reduced FAA) is associated with negative affect and risk for MDD. While this hypothesis is widely known, a number of other studies instead have found increased FAA in MDD, or evidence that either leftward or rightward bias in FAA is associated with depression. Here we briefly review the literature on leftward or rightward lateralization in FAA in MDD, and find much evidence that MDD is not always characterized by reduced FAA. We also review the limited literature on FAA and monoaminergic neurotransmitter systems, including pharmacologic agents that act on them. Studies of serotonin in particular provide genetic and pharmacologic evidence for modulation of FAA, where some of these data may suggest that serotonin reduces FAA. In a synthesis of the collective literature on FAA and the monoamines, we suggest that serotonin and norepinephrine may differentially affect FAA, with serotonin tending to promote right frontal activation and norepinephrine biased toward left frontal activation. These putative differences in frontal lateralization may influence MDD phenotypes or potential subtypes of the disorder, and suggest pharmacologic treatment strategies.
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Affiliation(s)
- Paul J. Fitzgerald
- Department of Psychological Sciences, Purdue University, West Lafayette, IN, USA
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Liao J, Zhang C, Shi Y, Sui R, Yuan S, Li Y, Zhang M, Xu W, Han D. Sleep apnea evokes right hemisphere dominance and psychological disorders: An exploratory study. Sleep Med 2024; 122:128-133. [PMID: 39173208 DOI: 10.1016/j.sleep.2024.08.009] [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: 08/30/2023] [Revised: 01/17/2024] [Accepted: 08/11/2024] [Indexed: 08/24/2024]
Abstract
BACKGROUND Obstructive sleep apnea (OSA) is considered one of the major causes of sleep disorders and psychological disorders in individuals. Brain asymmetry (BA) demonstrates individual hemispheric activity and psychological disorders. This study aimed to explore the characteristics of BA and psychology in OSA. METHODS Enrolment of patients for sleep assessment at the Sleep Medicine Center. Clinical characteristics, handedness, and psychological scales were prospectively collected from subjects. Subsequently, EEG power in alpha, beta, and theta bilaterally was calculated for the rest and sleep phases. RESULTS A total of 152 OSA and 21 non-OSA subjects were included in the study. In the frontal, central and occipital regions, OSA exhibited increased interhemispheric asymmetry with increasing apnea-hypopnea index (AHI) during rest and sleep. Simultaneously, the results showed that greater activity in the right hemisphere was positively associated with anxiety and extraversion, while inversely with positive and lie scale. In addition, the results show that OSA contributes to abnormal BA fluctuations during sleep. CONCLUSIONS Our results suggest that sleep disorders associated with apnea-hypopnea and arousal may contribute to increased BA during sleep. Such changes may persist into wakefulness with psychological traits.
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Affiliation(s)
- Jianhong Liao
- Department of Sleep Medical Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, China
| | - Chao Zhang
- Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China
| | - Yunhan Shi
- Department of Sleep Medical Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, China
| | - Rongcui Sui
- Department of Sleep Medical Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, China
| | - Shizhen Yuan
- Department of Sleep Medical Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, China
| | - Yanru Li
- Department of Sleep Medical Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, China.
| | - Milin Zhang
- Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China
| | - Wen Xu
- Department of Sleep Medical Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, China
| | - Demin Han
- Department of Sleep Medical Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, China.
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Kéri S. Stress Responses Among Individuals with Spiritual Struggles in Hungary: An Experimental Study. JOURNAL OF RELIGION AND HEALTH 2024; 63:185-201. [PMID: 37097409 PMCID: PMC10861601 DOI: 10.1007/s10943-023-01819-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/14/2023] [Indexed: 06/19/2023]
Abstract
Individuals with a Religious or Spiritual Problem (RSP), as defined in the DSM-5, experience distress associated with faith-related moral dilemmas, existential meaning, and transpersonal attitudes toward other people. It is unclear whether a RSP reflects a generally heightened stress reactivity or whether the stress response is confined to religious and spiritual contexts. To elucidate this issue, we measured behavioral and physiological responses during social-evaluative stress (public speaking-Trier Social Stress Test) and in religious/spiritual contexts (Bible reading and listening to sacred music) in 35 individuals with RSP and 35 matched participants. We found no stress reduction in the religious/spiritual context in RSP, as indicated by increased heart rate, saliva cortisol, and relatively higher left than right frontal activity. Religious stimuli evoked physiological stress responses in RSP. Contrary to the physiological parameters, participants with RSP reported less anxiety in the religious/spiritual context. Religious individuals with and without RSP showed similar stress responses during public speaking. Religious individuals without RSP displayed reduced stress responses in the religious/spiritual context. These results indicate that specific physiological distress in religious/spiritual contexts should be considered in the psychological care of RSP.
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Affiliation(s)
- Szabolcs Kéri
- Department of Cognitive Science, Budapest University of Technology and Economics, Egry J. Str. 1, Budapest, 1111, Hungary.
- National Institute of Mental Health, Neurology and Neurosurgery - Nyírő Gyula Hospital, Budapest, Hungary.
- Faculty of Medicine, Department of Physiology, University of Szeged, Szeged, Hungary.
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Ren Y, Liu Y, Zhao X, Hu W, Wei Z, Tang Z, Luo J, Li M, Guo K, Wu Y, Yang J. Hair Cortisone Predicts Lower Stress-induced Salivary Cortisol Response: Resting-state Functional Connectivity Between Salience and Limbic Networks. Neuroscience 2023; 517:61-69. [PMID: 36924986 DOI: 10.1016/j.neuroscience.2023.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 03/04/2023] [Accepted: 03/08/2023] [Indexed: 03/15/2023]
Abstract
Previous studies revealed that high long-term hypothalamic-pituitaryadrenal (HPA) axis activity measured by the hair cortisol concentrations predicts lower acute stress cortisol response and reported the influences of hair cortisol on brain activity during acute stress exposure. However, considering that long-term HPA axis activity has a close relationship with the brain's resting-state functional connectivity (RSFC), the current study aimed to explore the role of RSFC between limbic and salience network in this relationship. Seventy-seven healthy participants underwent resting-state imaging scans before performing the acute ScanSTRESS task. Saliva samples were collected to assess the levels of acute stress salivary cortisol. Hair samples were also collected, and the corticosteroid concentration extracted from these samples were used as a biomarker of long-term HPA axis activity. High hair cortisone (HairE) levels predicted lower acute stress cortisol response. Moreover, high HairE levels were significantly correlated with enhanced RSFC between limbic and salience networks, while RSFC was negatively associated with acute stress cortisol response. Importantly, the RSFC between left insula and left parahippocampus mediated the association between HairE and acute cortisol stress response. Taken together, this study uncovers the important role of RSFC between salience and limbic networks in the long-term relationship between HairE and acute cortisol response and contributes to a deeper understanding of the individual differences in acute stress response.
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Affiliation(s)
- Yipeng Ren
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Yadong Liu
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Xiaolin Zhao
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Weiyu Hu
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Zhenni Wei
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Zihan Tang
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Jiahao Luo
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Mengyi Li
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Kaige Guo
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China
| | - Yan Wu
- Key Laboratory of Child Development and Learning Science (Ministry of Education), Southeast University, Nanjing, China
| | - Juan Yang
- Faculty of Psychology, Southwest University, Chongqing 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, China.
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Shi X, Nie X, Wu J. The cortisol awakening response and the late positive potentials evoked by unpleasant emotional pictures in healthy adults. Stress 2022; 25:40-47. [PMID: 34882046 DOI: 10.1080/10253890.2021.2008902] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
The cortisol awakening response (CAR) refers to a sharp rise in cortisol concentrations within the 45 min following morning awakening. Alterations in CAR have been associated with various internalizing symptoms and brain function. The current study aimed to investigate the association between CAR and neural activity in response to unpleasant emotional pictures. A total of 46 healthy adults (22.55 years ± 1.69) collected saliva samples at 0, 30, and 45 min post-awakening on two days to assess the CAR. In the afternoon after CAR measurement on the first day, electroencephalograms were recorded when the participants completed a passive viewing task. The results showed that a greater CAR was associated with a decreased late positive potential difference score between unpleasant and neutral stimuli. This finding indicates that a larger CAR may be associated with decreased attentional engagement to unpleasant emotional information in healthy adults.
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Affiliation(s)
- Xia Shi
- Department of Psychology, Tianjin University of Technology and Education, Tianjin, China
| | - Xin Nie
- Department of Psychology, Tianjin University of Technology and Education, Tianjin, China
| | - Jianhui Wu
- Center for Brain Disorder and Cognitive Sciences, Shenzhen University, Shenzhen, Guangdong, China
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