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  1. Buch: Analysis of parallel spike trains

    Grün, Sonja / Rotter, Stefan

    (Springer series in computational neuroscience ; 106)

    2010  

    Verfasserangabe Sonja Grün ; Stefan Rotter, ed
    Serientitel Springer series in computational neuroscience ; 106
    Überordnung
    Sprache Englisch
    Umfang XIX, 441 S. : Ill., graph. Darst., 24 cm
    Verlag Springer
    Erscheinungsort New York u.a.
    Erscheinungsland Vereinigte Staaten
    Dokumenttyp Buch
    HBZ-ID HT016525283
    ISBN 978-1-4419-5674-3 ; 1-4419-5674-3 ; 9781441956750 ; 1441956751
    Datenquelle Katalog ZB MED Medizin, Gesundheit

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    SignaturLeihstatusStandort
    2010 A 4758 bestellbar zur Ausleihe Magazin

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  2. Artikel ; Online: Ultrafast Excitation Exchange in a Maxwell Fish-Eye Lens.

    Diekmann, Oliver / Krimer, Dmitry O / Rotter, Stefan

    Physical review letters

    2024  Band 132, Heft 1, Seite(n) 13602

    Abstract: The strong coupling of quantum emitters to a cavity mode has been of paramount importance in the development of quantum optics. Recently, also the strong coupling to more than a single mode of an electromagnetic resonator has drawn considerable interest. ...

    Abstract The strong coupling of quantum emitters to a cavity mode has been of paramount importance in the development of quantum optics. Recently, also the strong coupling to more than a single mode of an electromagnetic resonator has drawn considerable interest. We investigate how this multimode strong coupling regime can be harnessed to coherently control quantum systems. Specifically, we demonstrate that a Maxwell fish-eye lens can be used to implement a pulsed excitation exchange between two distant quantum emitters. This periodic exchange is mediated by single-photon pulses and can be extended to a photon-exchange between two atomic ensembles, for which the coupling strength is enhanced collectively.
    Sprache Englisch
    Erscheinungsdatum 2024-01-19
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.013602
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  3. Artikel: Repetitive transcranial magnetic stimulation (rTMS) triggers dose-dependent homeostatic rewiring in recurrent neuronal networks.

    Anil, Swathi / Lu, Han / Rotter, Stefan / Vlachos, Andreas

    bioRxiv : the preprint server for biology

    2023  

    Abstract: Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive brain stimulation technique used to induce neuronal plasticity in healthy individuals and patients. Designing effective and reproducible rTMS protocols poses a major challenge in the ... ...

    Abstract Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive brain stimulation technique used to induce neuronal plasticity in healthy individuals and patients. Designing effective and reproducible rTMS protocols poses a major challenge in the field as the underlying biomechanisms remain elusive. Current clinical protocol designs are often based on studies reporting rTMS-induced long-term potentiation or depression of synaptic transmission. Herein, we employed computational modeling to explore the effects of rTMS on long-term structural plasticity and changes in network connectivity. We simulated a recurrent neuronal network with homeostatic structural plasticity between excitatory neurons, and demonstrated that this mechanism was sensitive to specific parameters of the stimulation protocol (i.e., frequency, intensity, and duration of stimulation). The feedback-inhibition initiated by network stimulation influenced the net stimulation outcome and hindered the rTMS-induced homeostatic structural plasticity, highlighting the role of inhibitory networks. These findings suggest a novel mechanism for the lasting effects of rTMS, i.e., rTMS-induced homeostatic structural plasticity, and highlight the importance of network inhibition in careful protocol design, standardization, and optimization of stimulation.
    Sprache Englisch
    Erscheinungsdatum 2023-03-21
    Erscheinungsland United States
    Dokumenttyp Preprint
    DOI 10.1101/2023.03.20.533396
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Repetitive transcranial magnetic stimulation (rTMS) triggers dose-dependent homeostatic rewiring in recurrent neuronal networks.

    Anil, Swathi / Lu, Han / Rotter, Stefan / Vlachos, Andreas

    PLoS computational biology

    2023  Band 19, Heft 11, Seite(n) e1011027

    Abstract: Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive brain stimulation technique used to induce neuronal plasticity in healthy individuals and patients. Designing effective and reproducible rTMS protocols poses a major challenge in the ... ...

    Abstract Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive brain stimulation technique used to induce neuronal plasticity in healthy individuals and patients. Designing effective and reproducible rTMS protocols poses a major challenge in the field as the underlying biomechanisms of long-term effects remain elusive. Current clinical protocol designs are often based on studies reporting rTMS-induced long-term potentiation or depression of synaptic transmission. Herein, we employed computational modeling to explore the effects of rTMS on long-term structural plasticity and changes in network connectivity. We simulated a recurrent neuronal network with homeostatic structural plasticity among excitatory neurons, and demonstrated that this mechanism was sensitive to specific parameters of the stimulation protocol (i.e., frequency, intensity, and duration of stimulation). Particularly, the feedback-inhibition initiated by network stimulation influenced the net stimulation outcome and hindered the rTMS-induced structural reorganization, highlighting the role of inhibitory networks. These findings suggest a novel mechanism for the lasting effects of rTMS, i.e., rTMS-induced homeostatic structural plasticity, and highlight the importance of network inhibition in careful protocol design, standardization, and optimization of stimulation.
    Mesh-Begriff(e) Humans ; Transcranial Magnetic Stimulation/methods ; Long-Term Potentiation/physiology ; Neuronal Plasticity/physiology ; Brain ; Neurons
    Sprache Englisch
    Erscheinungsdatum 2023-11-13
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2193340-6
    ISSN 1553-7358 ; 1553-734X
    ISSN (online) 1553-7358
    ISSN 1553-734X
    DOI 10.1371/journal.pcbi.1011027
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  5. Artikel ; Online: Optical physics: A laser model for cosmology.

    Rotter, Stefan

    Nature

    2017  Band 549, Heft 7671, Seite(n) 163–164

    Sprache Englisch
    Erscheinungsdatum 2017-09-13
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/549163a
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  6. Artikel ; Online: Neurostimulation targeting the epileptic focus: Current understanding and perspectives for treatment.

    Schulze-Bonhage, Andreas / Nitsche, Michael A / Rotter, Stefan / Focke, Niels K / Rao, Vikram R

    Seizure

    2024  Band 117, Seite(n) 183–192

    Abstract: For the one third of people with epilepsy whose seizures are not controlled with medications, targeting the seizure focus with neurostimulation can be an effective therapeutic strategy. In this focused review, we summarize a discussion of targeted ... ...

    Abstract For the one third of people with epilepsy whose seizures are not controlled with medications, targeting the seizure focus with neurostimulation can be an effective therapeutic strategy. In this focused review, we summarize a discussion of targeted neurostimulation modalities during a workshop held in Frankfurt, Germany in September 2023. Topics covered include: available devices for seizure focus stimulation; alternating current (AC) and direct current (DC) stimulation to reduce focal cortical excitability; modeling approaches to simulate DC stimulation; reconciling the efficacy of focal stimulation with the network theory of epilepsy; and the emerging concept of 'neurostimulation zones,' which are defined as cortical regions where focal stimulation is most effective for reducing seizures and which may or may not directly involve the seizure onset zone. By combining experimental data, modeling results, and clinical outcome analysis, rational selection of target regions and stimulation parameters is increasingly feasible, paving the way for a broader use of neurostimulation for epilepsy in the future.
    Mesh-Begriff(e) Humans ; Epilepsy/therapy ; Electric Stimulation Therapy/methods
    Sprache Englisch
    Erscheinungsdatum 2024-03-02
    Erscheinungsland England
    Dokumenttyp Journal Article ; Review
    ZDB-ID 1137610-7
    ISSN 1532-2688 ; 1059-1311
    ISSN (online) 1532-2688
    ISSN 1059-1311
    DOI 10.1016/j.seizure.2024.03.001
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

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  7. Artikel ; Online: Homeostatic control of synaptic rewiring in recurrent networks induces the formation of stable memory engrams.

    Gallinaro, Júlia V / Gašparović, Nebojša / Rotter, Stefan

    PLoS computational biology

    2022  Band 18, Heft 2, Seite(n) e1009836

    Abstract: Brain networks store new memories using functional and structural synaptic plasticity. Memory formation is generally attributed to Hebbian plasticity, while homeostatic plasticity is thought to have an ancillary role in stabilizing network dynamics. Here ...

    Abstract Brain networks store new memories using functional and structural synaptic plasticity. Memory formation is generally attributed to Hebbian plasticity, while homeostatic plasticity is thought to have an ancillary role in stabilizing network dynamics. Here we report that homeostatic plasticity alone can also lead to the formation of stable memories. We analyze this phenomenon using a new theory of network remodeling, combined with numerical simulations of recurrent spiking neural networks that exhibit structural plasticity based on firing rate homeostasis. These networks are able to store repeatedly presented patterns and recall them upon the presentation of incomplete cues. Storage is fast, governed by the homeostatic drift. In contrast, forgetting is slow, driven by a diffusion process. Joint stimulation of neurons induces the growth of associative connections between them, leading to the formation of memory engrams. These memories are stored in a distributed fashion throughout connectivity matrix, and individual synaptic connections have only a small influence. Although memory-specific connections are increased in number, the total number of inputs and outputs of neurons undergo only small changes during stimulation. We find that homeostatic structural plasticity induces a specific type of "silent memories", different from conventional attractor states.
    Mesh-Begriff(e) Homeostasis/physiology ; Models, Neurological ; Nerve Net/physiology ; Neuronal Plasticity/physiology ; Neurons/physiology ; Synapses/physiology
    Sprache Englisch
    Erscheinungsdatum 2022-02-10
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2193340-6
    ISSN 1553-7358 ; 1553-734X
    ISSN (online) 1553-7358
    ISSN 1553-734X
    DOI 10.1371/journal.pcbi.1009836
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  8. Artikel ; Online: Transforming Space with Non-Hermitian Dielectrics.

    Krešić, Ivor / Makris, Konstantinos G / Leonhardt, Ulf / Rotter, Stefan

    Physical review letters

    2022  Band 128, Heft 18, Seite(n) 183901

    Abstract: Coordinate transformations are a versatile tool to mold the flow of light, enabling a host of astonishing phenomena such as optical cloaking with metamaterials. Moving away from the usual restriction that links isotropic materials with conformal ... ...

    Abstract Coordinate transformations are a versatile tool to mold the flow of light, enabling a host of astonishing phenomena such as optical cloaking with metamaterials. Moving away from the usual restriction that links isotropic materials with conformal transformations, we show how nonconformal distortions of optical space are intimately connected to the complex refractive index distribution of an isotropic non-Hermitian medium. Remarkably, this insight can be used to circumvent the material requirement of working with refractive indices below unity, which limits the applications of transformation optics. We apply our approach to design a broadband unidirectional dielectric cloak, which relies on nonconformal coordinate transformations to tailor the non-Hermitian refractive index profile around a cloaked object. Our insights bridge the fields of two-dimensional transformation optics and non-Hermitian photonics.
    Sprache Englisch
    Erscheinungsdatum 2022-05-20
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.128.183901
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  9. Artikel ; Online: Optimal Cooling of Multiple Levitated Particles through Far-Field Wavefront Shaping.

    Hüpfl, Jakob / Bachelard, Nicolas / Kaczvinszki, Markus / Horodynski, Michael / Kühmayer, Matthias / Rotter, Stefan

    Physical review letters

    2023  Band 130, Heft 8, Seite(n) 83203

    Abstract: Light forces can be harnessed to levitate mesoscopic objects and cool them down toward their motional quantum ground state. Roadblocks on the way to scale up levitation from a single to multiple particles in close proximity are the requirements to ... ...

    Abstract Light forces can be harnessed to levitate mesoscopic objects and cool them down toward their motional quantum ground state. Roadblocks on the way to scale up levitation from a single to multiple particles in close proximity are the requirements to constantly monitor the particles' positions as well as to engineer light fields that react fast and appropriately to their movements. Here, we present an approach that solves both problems at once. By exploiting the information stored in a time-dependent scattering matrix, we introduce a formalism enabling the identification of spatially modulated wavefronts, which simultaneously cool down multiple objects of arbitrary shapes. An experimental implementation is suggested based on stroboscopic scattering-matrix measurements and time-adaptive injections of modulated light fields.
    Sprache Englisch
    Erscheinungsdatum 2023-03-02
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.130.083203
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  10. Artikel ; Online: Certifying Multimode Light-Matter Interaction in Lossy Resonators.

    Lentrodt, Dominik / Diekmann, Oliver / Keitel, Christoph H / Rotter, Stefan / Evers, Jörg

    Physical review letters

    2023  Band 130, Heft 26, Seite(n) 263602

    Abstract: Quantum models based on few-mode master equations have been a central tool in the study of resonator quantum electrodynamics, extending the seminal single-mode Jaynes-Cummings model to include loss and multiple modes. Despite their broad application ... ...

    Abstract Quantum models based on few-mode master equations have been a central tool in the study of resonator quantum electrodynamics, extending the seminal single-mode Jaynes-Cummings model to include loss and multiple modes. Despite their broad application range, previous approaches within this framework have either relied on a Markov approximation or a fitting procedure. By combining ideas from pseudomode and quasinormal mode theory, we develop a certification criterion for multi-mode effects in lossy resonators. It is based on a witness observable, and neither requires a fitting procedure nor a Markov approximation. Using the resulting criterion, we demonstrate that such multi-mode effects are important for understanding previous experiments in x-ray cavity QED with Mössbauer nuclei and that they allow one to tune the nuclear ensemble properties.
    Sprache Englisch
    Erscheinungsdatum 2023-01-09
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.130.263602
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