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Han HB, Shin HS, Jeong Y, Kim J, Choi JH. Dynamic switching of neural oscillations in the prefrontal-amygdala circuit for naturalistic freeze-or-flight. Proc Natl Acad Sci U S A 2023; 120:e2308762120. [PMID: 37669394 PMCID: PMC10500169 DOI: 10.1073/pnas.2308762120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/10/2023] [Indexed: 09/07/2023] Open
Abstract
The medial prefrontal cortex (mPFC) and basolateral amygdala (BLA) are involved in the regulation of defensive behavior under threat, but their engagement in flexible behavior shifts remains unclear. Here, we report the oscillatory activities of mPFC-BLA circuit in reaction to a naturalistic threat, created by a predatory robot in mice. Specifically, we found dynamic frequency tuning among two different theta rhythms (~5 or ~10 Hz) was accompanied by agile changes of two different defensive behaviors (freeze-or-flight). By analyzing flight trajectories, we also found that high beta (~30 Hz) is engaged in the top-down process for goal-directed flights and accompanied by a reduction in fast gamma (60 to 120 Hz, peak near 70 Hz). The elevated beta nested the fast gamma activity by its phase more strongly. Our results suggest that the mPFC-BLA circuit has a potential role in oscillatory gear shifting allowing flexible information routing for behavior switches.
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Affiliation(s)
- Hio-Been Han
- Computational Cognitive & Systems Neuroscience Laboratory, Brain Science Institute, Korea Institute of Science and Technology, Seoul02792, Republic of Korea
- Program of Brain and Cognitive Engineering, Korea Advanced Institute of Science and Technology, Daejeon34141, Republic of Korea
| | - Hee-Sup Shin
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon34126, Republic of Korea
- SL Bigen Co., Incheon21983, Republic of Korea
| | - Yong Jeong
- Program of Brain and Cognitive Engineering, Korea Advanced Institute of Science and Technology, Daejeon34141, Republic of Korea
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon34141, Republic of Korea
| | - Jisoo Kim
- Computational Cognitive & Systems Neuroscience Laboratory, Brain Science Institute, Korea Institute of Science and Technology, Seoul02792, Republic of Korea
- Department of Physiology, Development and Neuroscience, University of Cambridge, CambridgeCB2 3EG, United Kingdom
| | - Jee Hyun Choi
- Computational Cognitive & Systems Neuroscience Laboratory, Brain Science Institute, Korea Institute of Science and Technology, Seoul02792, Republic of Korea
- Division of Bio-Medical Science & Technology, Korea University of Science and Technology, Daejeon34113, Republic of Korea
- Department of Physics and Center for Theoretical Physics, Seoul National University, Seoul08826, Republic of Korea
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Laha M, Konar A, Rakshit P, Nagar AK. Hemodynamic Analysis for Olfactory Perceptual Degradation Assessment Using Generalized Type-2 Fuzzy Regression. IEEE Trans Cogn Dev Syst 2022. [DOI: 10.1109/tcds.2021.3101897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mousumi Laha
- Department of Electronics and Tele-Communication Engineering, Jadavpur University, Kolkata, India
| | - Amit Konar
- Department of Electronics and Tele-Communication Engineering, Jadavpur University, Kolkata, India
| | - Pratyusha Rakshit
- Department of Electronics and Tele-Communication Engineering, Jadavpur University, Kolkata, India
| | - Atulya K. Nagar
- Department of Mathematics and Computer Science, Liverpool Hope University, Liverpool, U.K
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Yoon Y, Kim S, Seol Y, Im H, Park U, Han HB, Choi JH, Ryu H. Increases of Phosphorylated Tau (Ser202/Thr205) in the Olfactory Regions Are Associated with Impaired EEG and Olfactory Behavior in Traumatic Brain Injury Mice. Biomedicines 2022; 10:865. [PMID: 35453615 PMCID: PMC9031269 DOI: 10.3390/biomedicines10040865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/30/2022] [Accepted: 04/03/2022] [Indexed: 02/04/2023] Open
Abstract
Traumatic brain injury (TBI) leads to long-term cognitive impairments, with an increased risk for neurodegenerative and psychiatric disorders. Among these various impairments, olfactory dysfunction is one of the most common symptoms in TBI patients. However, there are very few studies that show the association between olfactory dysfunction and repetitive TBI. To investigate the effects of repetitive TBI on olfactory functioning and the related pathological neuronal injuries in mice, we applied a weight-drop model of TBI and performed neuropathological examinations and electroencephalography (EEG) in olfactory-bulb-associated areas. Through neuropathological examinations, we found significant increases of amyloid precursor protein (APP) and phosphorylated Tau (p-Tau) (S202/T205) in olfactory-bulb-associated areas. Neuronal atrophy in the lateral anterior olfactory nucleus (AOL), granule layer olfactory bulb (GrO), and dorsal tenia tecta (DTT) was also found to be correlated with p-Tau levels. However, there was no difference in the total Tau levels in the olfactory-bulb-associated areas of TBI mice. Electroencephalography (EEG) of repetitive TBI mouse models showed impaired spontaneous delta oscillation, as well as altered cross-frequency coupling between delta phase and amplitudes of the fast oscillations in the resting-state olfactory bulb. Furthermore, abnormal alterations in EEG band powers were observed during the olfactory oddball paradigm test. TBI also led to impairments of the olfactory-function-associated behaviors. This study provides evidence of behavioral, neuropathological, and physiological alterations in the mouse olfactory system caused by repetitive TBI. Together, p-Tau alterations and EEG impairments may serve as important biomarkers of olfactory-track-associated dysfunctions in repetitive TBI.
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Affiliation(s)
- Younghyun Yoon
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235, USA;
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (S.K.); (Y.S.); (H.I.); (U.P.); (H.-B.H.)
| | - SuHyun Kim
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (S.K.); (Y.S.); (H.I.); (U.P.); (H.-B.H.)
| | - YunHee Seol
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (S.K.); (Y.S.); (H.I.); (U.P.); (H.-B.H.)
| | - Hyoenjoo Im
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (S.K.); (Y.S.); (H.I.); (U.P.); (H.-B.H.)
| | - Uiyeol Park
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (S.K.); (Y.S.); (H.I.); (U.P.); (H.-B.H.)
| | - Hio-Been Han
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (S.K.); (Y.S.); (H.I.); (U.P.); (H.-B.H.)
- Program of Brain and Cognitive Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
| | - Jee Hyun Choi
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (S.K.); (Y.S.); (H.I.); (U.P.); (H.-B.H.)
- Neuroscience Program, Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Korea
| | - Hoon Ryu
- Center for Neuroscience, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (S.K.); (Y.S.); (H.I.); (U.P.); (H.-B.H.)
- Neuroscience Program, Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Korea
- Boston University Alzheimer’s Disease Research Center, Department of Neurology, Boston University School of Medicine, Boston, MA 02130, USA
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Behavior of olfactory-related frontal lobe oscillations in Alzheimer's disease and MCI: A pilot study. Int J Psychophysiol 2022; 175:43-53. [PMID: 35217110 DOI: 10.1016/j.ijpsycho.2022.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 12/19/2021] [Accepted: 02/17/2022] [Indexed: 11/20/2022]
Abstract
Slow-gamma (35-45 Hz) phase synchronization and the coupling between slow-gamma and low-frequency theta oscillations (4-8 Hz) are closely related to memory retrieval and cognitive functions. In this pilot study, we assess the Phase Amplitude Coupling (PAC) between theta and slow-gamma oscillatory bands and the quality of synchronization in slow-gamma oscillations using Phase Locking Value (PLV) on EEG data from healthy individuals and patients diagnosed with amnestic Mild Cognitive Impairment (aMCI) and Alzheimer's Disease (AD) during an oddball olfactory task. Our study indicates noticeable differences between the PLV and PAC values corresponding to olfactory stimulation in the three groups of participants. These differences can help explain the underlying processes involved in these cognitive disorders and the differences between aMCI and AD patients in performing cognitive tasks. Our study also proposes a diagnosis method for aMCI through comparing the brain's response characteristics during olfactory stimulation and rest. Early diagnosis of aMCI can potentially lead to its timely treatment and prevention from progression to AD.
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Ross JM, Hamm JP. Cortical Microcircuit Mechanisms of Mismatch Negativity and Its Underlying Subcomponents. Front Neural Circuits 2020; 14:13. [PMID: 32296311 PMCID: PMC7137737 DOI: 10.3389/fncir.2020.00013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 03/17/2020] [Indexed: 12/11/2022] Open
Abstract
In the neocortex, neuronal processing of sensory events is significantly influenced by context. For instance, responses in sensory cortices are suppressed to repetitive or redundant stimuli, a phenomenon termed “stimulus-specific adaptation” (SSA). However, in a context in which that same stimulus is novel, or deviates from expectations, neuronal responses are augmented. This augmentation is termed “deviance detection” (DD). This contextual modulation of neural responses is fundamental for how the brain efficiently processes the sensory world to guide immediate and future behaviors. Notably, context modulation is deficient in some neuropsychiatric disorders such as schizophrenia (SZ), as quantified by reduced “mismatch negativity” (MMN), an electroencephalography waveform reflecting a combination of SSA and DD in sensory cortex. Although the role of NMDA-receptor function and other neuromodulatory systems on MMN is established, the precise microcircuit mechanisms of MMN and its underlying components, SSA and DD, remain unknown. When coupled with animal models, the development of powerful precision neurotechnologies over the past decade carries significant promise for making new progress into understanding the neurobiology of MMN with previously unreachable spatial resolution. Currently, rodent models represent the best tool for mechanistic study due to the vast genetic tools available. While quantifying human-like MMN waveforms in rodents is not straightforward, the “oddball” paradigms used to study it in humans and its underlying subcomponents (SSA/DD) are highly translatable across species. Here we summarize efforts published so far, with a focus on cortically measured SSA and DD in animals to maintain relevance to the classically measured MMN, which has cortical origins. While mechanistic studies that measure and contrast both components are sparse, we synthesize a potential set of microcircuit mechanisms from the existing rodent, primate, and human literature. While MMN and its subcomponents likely reflect several mechanisms across multiple brain regions, understanding fundamental microcircuit mechanisms is an important step to understand MMN as a whole. We hypothesize that SSA reflects adaptations occurring at synapses along the sensory-thalamocortical pathways, while DD depends on both SSA inherited from afferent inputs and resulting disinhibition of non-adapted neurons arising from the distinct physiology and wiring properties of local interneuronal subpopulations and NMDA-receptor function.
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Affiliation(s)
- Jordan M Ross
- Neuroscience Institute, Georgia State University, Atlanta, GA, United States.,Center for Behavioral Neuroscience, Georgia State University, Atlanta, GA, United States
| | - Jordan P Hamm
- Neuroscience Institute, Georgia State University, Atlanta, GA, United States.,Center for Behavioral Neuroscience, Georgia State University, Atlanta, GA, United States.,Center for Neuroinflammation and Cardiometabolic Diseases, Georgia State University, Atlanta, GA, United States
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