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Zhuo SY, Li GF, Gong HQ, Qiu WB, Zheng HR, Liang PJ. Low-frequency, low-intensity ultrasound modulates light responsiveness of mouse retinal ganglion cells. J Neural Eng 2022; 19. [PMID: 35772385 DOI: 10.1088/1741-2552/ac7d75] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 06/30/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Ultrasound modulates the firing activity of retinal ganglion cells (RGCs), but the effects of lower-frequency, lower-intensity ultrasound on RGCs and underlying mechanism(s) remain poorly understood. This study aims to address these questions. APPROACH Multi-electrode recordings were used in this study to record the firing sequences of RGCs in isolated mouse retinas. RGCs' background firing activities as well as their light responses were recorded with or without ultrasound stimulation. Cross-correlation analyses were performed to investigate the possible cellular/circuitry mechanism(s) underlying ultrasound modulation. MAIN RESULTS It was found that ultrasound stimulation of isolated mouse retina enhanced the background activity of ON-RGCs and OFF-RGCs. In addition, background ultrasound stimulation shortened the light response latency of both ON-RGCs and OFF-RGCs, while enhancing part of the RGCs' (both ON- and OFF-subtypes) light response and decreasing that of the others. In some ON-OFF RGCs, the ON- and OFF-responses of an individual cell were oppositely modulated by the ultrasound stimulation, which suggests that ultrasound stimulation does not necessarily exert its effect directly on RGCs, but rather via its influence on other type(s) of cells. By analyzing the cross-correlation between the firing sequences of RGC pairs, it was found that concerted activity occurred during ultrasound stimulation differed from that occurred during light stimulation, in both spatial and temporal aspects. These results suggest that the cellular circuits involved in ultrasound- and light-induced concerted activities are different and glial cells may be involved in the circuit in response to ultrasound. SIGNIFICANCE These findings demonstrate that ultrasound affects neuronal background activity and light responsiveness, which are critical for visual information processing. These results may also imply a hitherto unrecognized role of glial cell activation in the bidirectional modulation effects of RGCs and may be critical for the nervous system.
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Affiliation(s)
- Shun-Yi Zhuo
- Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, CHINA
| | - Guo-Feng Li
- Guangdong Medical University, Songshan Lake Science and Technology Park, Dongguan, Guangdong, 523000, CHINA
| | - Hai-Qing Gong
- School of Biomedical Engineering, Shanghai Jiao Tong University, Dongchuan 800 road, Shanghai, 200240, CHINA
| | - Wei-Bao Qiu
- Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Ave.,, Nanshan, Shenzhen, Guangdong, 518055, CHINA
| | - Hai-Rong Zheng
- Paul C. Lauterbur Research Centre for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Shenzhen Institutes of Advanced Technology, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, P.R.China, Shenzhen, 518055, CHINA
| | - Pei-Ji Liang
- School of Biomedical Engineering, Shanghai Jiao Tong University, China, Shanghai, 800 Dongchuan Road, Shanghai, Shanghai, 200240, CHINA
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Abstract
This study presents a computational model to reproduce the biological dynamics of "listening to music." A biologically plausible model of periodicity pitch detection is proposed and simulated. Periodicity pitch is computed across a range of the auditory spectrum. Periodicity pitch is detected from subsets of activated auditory nerve fibers (ANFs). These activate connected model octopus cells, which trigger model neurons detecting onsets and offsets; thence model interval-tuned neurons are innervated at the right interval times; and finally, a set of common interval-detecting neurons indicate pitch. Octopus cells rhythmically spike with the pitch periodicity of the sound. Batteries of interval-tuned neurons stopwatch-like measure the inter-spike intervals of the octopus cells by coding interval durations as first spike latencies (FSLs). The FSL-triggered spikes synchronously coincide through a monolayer spiking neural network at the corresponding receiver pitch neurons.
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Affiliation(s)
- Frank Klefenz
- Fraunhofer Institute for Digital Media Technology IDMT, Ilmenau, Germany
| | - Tamas Harczos
- Fraunhofer Institute for Digital Media Technology IDMT, Ilmenau, Germany
- Auditory Neuroscience and Optogenetics Laboratory, German Primate Center, Göttingen, Germany
- audifon GmbH & Co. KG, Kölleda, Germany
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Bourien J, Tang Y, Batrel C, Huet A, Lenoir M, Ladrech S, Desmadryl G, Nouvian R, Puel JL, Wang J. Contribution of auditory nerve fibers to compound action potential of the auditory nerve. J Neurophysiol 2014; 112:1025-39. [PMID: 24848461 DOI: 10.1152/jn.00738.2013] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Sound-evoked compound action potential (CAP), which captures the synchronous activation of the auditory nerve fibers (ANFs), is commonly used to probe deafness in experimental and clinical settings. All ANFs are believed to contribute to CAP threshold and amplitude: low sound pressure levels activate the high-spontaneous rate (SR) fibers, and increasing levels gradually recruit medium- and then low-SR fibers. In this study, we quantitatively analyze the contribution of the ANFs to CAP 6 days after 30-min infusion of ouabain into the round window niche. Anatomic examination showed a progressive ablation of ANFs following increasing concentration of ouabain. CAP amplitude and threshold plotted against loss of ANFs revealed three ANF pools: 1) a highly ouabain-sensitive pool, which does not participate in either CAP threshold or amplitude, 2) a less sensitive pool, which only encoded CAP amplitude, and 3) a ouabain-resistant pool, required for CAP threshold and amplitude. Remarkably, distribution of the three pools was similar to the SR-based ANF distribution (low-, medium-, and high-SR fibers), suggesting that the low-SR fiber loss leaves the CAP unaffected. Single-unit recordings from the auditory nerve confirmed this hypothesis and further showed that it is due to the delayed and broad first spike latency distribution of low-SR fibers. In addition to unraveling the neural mechanisms that encode CAP, our computational simulation of an assembly of guinea pig ANFs generalizes and extends our experimental findings to different species of mammals. Altogether, our data demonstrate that substantial ANF loss can coexist with normal hearing threshold and even unchanged CAP amplitude.
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Affiliation(s)
- Jérôme Bourien
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
| | - Yong Tang
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and Department of Otolaryngology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Charlène Batrel
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
| | - Antoine Huet
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
| | - Marc Lenoir
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
| | - Sabine Ladrech
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
| | - Gilles Desmadryl
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
| | - Régis Nouvian
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
| | - Jean-Luc Puel
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
| | - Jing Wang
- Institut National de la Santé et de la Recherche Médicale UMR 1051, Institute for Neurosciences of Montpellier, Montpellier, France; University of Montpellier 1 and 2, Montpellier, France; and
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Wang N, Wang X, Yang X, Tang J, Xiao Z. Interdependent effects of sound duration and amplitude on neuronal onset response in mice inferior colliculus. Brain Res 2014; 1543:209-22. [PMID: 24201024 DOI: 10.1016/j.brainres.2013.10.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 10/10/2013] [Accepted: 10/21/2013] [Indexed: 11/30/2022]
Abstract
In this study, we adopted iso-frequency pure tone bursts to investigate the interdependent effects of sound amplitude/intensity and duration on mice inferior colliculus (IC) neuronal onset responses. On the majority of the sampled neurons (n=57, 89.1%), sound amplitude and duration had effects on the neuronal response to each other by showing complex changes of the rat-intensity function/duration selectivity types and/or best amplitudes (BAs)/durations (BDs), evaluated by spike counts. These results suggested that the balance between the excitatory and inhibitory inputs set by one acoustic parameter, amplitude or duration, affected the neuronal spike counts responses to the other. Neuronal duration selectivity types were altered easily by the low-amplitude sounds while the changes of rate-intensity function types had no obvious preferred stimulus durations. However, the first spike latencies (FSLs) of the onset response neurons were relative stable to iso-amplitude sound durations and changing systematically along with the sound levels. The superimposition of FSL and duration threshold (DT) as a function of stimulus amplitude after normalization indicated that the effects of the sound levels on FSLs are considered on DT actually.
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Affiliation(s)
- Ningqian Wang
- Department of Physiology, School of Basic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Xiao Wang
- Department of Physiology, School of Basic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Xiaoli Yang
- Department of Physiology, School of Basic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jie Tang
- Department of Physiology, School of Basic Medicine, Southern Medical University, Guangzhou 510515, China
| | - Zhongju Xiao
- Department of Physiology, School of Basic Medicine, Southern Medical University, Guangzhou 510515, China.
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Sivaramakrishnan S, Sanchez JT, Grimsley CA. High concentrations of divalent cations isolate monosynaptic inputs from local circuits in the auditory midbrain. Front Neural Circuits 2013; 7:175. [PMID: 24194701 PMCID: PMC3810775 DOI: 10.3389/fncir.2013.00175] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 10/09/2013] [Indexed: 11/23/2022] Open
Abstract
Hierarchical processing of sensory information occurs at multiple levels between the peripheral and central pathway. Different extents of convergence and divergence in top down and bottom up projections makes it difficult to separate the various components activated by a sensory input. In particular, hierarchical processing at sub-cortical levels is little understood. Here we have developed a method to isolate extrinsic inputs to the inferior colliculus (IC), a nucleus in the midbrain region of the auditory system, with extensive ascending and descending convergence. By applying a high concentration of divalent cations (HiDi) locally within the IC, we isolate a HiDi-sensitive from a HiDi-insensitive component of responses evoked by afferent input in brain slices and in vivo during a sound stimulus. Our results suggest that the HiDi-sensitive component is a monosynaptic input to the IC, while the HiDi-insensitive component is a local polysynaptic circuit. Monosynaptic inputs have short latencies, rapid rise times, and underlie first spike latencies. Local inputs have variable delays and evoke long-lasting excitation. In vivo, local circuits have variable onset times and temporal profiles. Our results suggest that high concentrations of divalent cations should prove to be a widely useful method of isolating extrinsic monosynaptic inputs from local circuits in vivo.
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