Fritjof Helmchen

Q: What Schools Are Affiliated With Fritjof Helmchen

Fritjof Helmchen is affiliated with the following schools: University College London, University of Zurich

Fritjof Helmchen's AcademicInfluence.com Rankings

Fritjof Helmchen

Biology

#9573

World Rank

#12795

Historical Rank

Neuroscience

#1406

World Rank

#1454

Historical Rank

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Biology

Fritjof Helmchen's Degrees

PhD Neuroscience University of Zurich
Masters Biology University of Zurich

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Fritjof Helmchen's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Resting Microglial Cells Are Highly Dynamic Surveillants of Brain Parenchyma in Vivo (2005) (4780)
Deep tissue two-photon microscopy (2005) (3631)
Transgenic Mice for Intersectional Targeting of Neural Sensors and Effectors with High Specificity and Performance (2015) (829)
Fluctuations and stimulus-induced changes in blood flow observed in individual capillaries in layers 2 through 4 of rat neocortex. (1998) (801)
Sulforhodamine 101 as a specific marker of astroglia in the neocortex in vivo (2004) (778)
Ca2+ buffering and action potential-evoked Ca2+ signaling in dendrites of pyramidal neurons. (1996) (596)
A Miniature Head-Mounted Two-Photon Microscope High-Resolution Brain Imaging in Freely Moving Animals (2001) (562)
Imaging input and output of neocortical networks in vivo. (2005) (490)
Lentivirus-based genetic manipulations of cortical neurons and their optical and electrophysiological monitoring in vivo (2004) (463)
Pre‐ and postsynaptic whole‐cell recordings in the medial nucleus of the trapezoid body of the rat. (1995) (438)
In vivo dendritic calcium dynamics in deep-layer cortical pyramidal neurons (1999) (380)
Imaging cellular network dynamics in three dimensions using fast 3D laser scanning (2007) (362)
High-speed in vivo calcium imaging reveals neuronal network activity with near-millisecond precision (2010) (322)
Barrel cortex function (2013) (311)
Scanning fiber endoscopy with highly flexible, 1 mm catheterscopes for wide‐field, full‐color imaging (2010) (304)
Calcium dynamics associated with a single action potential in a CNS presynaptic terminal. (1997) (303)
Rapid 3D light-sheet microscopy with a tunable lens. (2013) (280)
Fast two-layer two-photon imaging of neuronal cell populations using an electrically tunable lens (2011) (279)
Behaviour-dependent recruitment of long-range projection neurons in somatosensory cortex (2013) (278)
Asynchronous therapy restores motor control by rewiring of the rat corticospinal tract after stroke (2014) (275)
Ultra-compact fiber-optic two-photon microscope for functional fluorescence imaging in vivo. (2008) (266)
Spatial Organization of Neuronal Population Responses in Layer 2/3 of Rat Barrel Cortex (2007) (261)
Miniaturized two-photon microscope based on a flexible coherent fiber bundle and a gradient-index lens objective. (2004) (256)
High-speed in vivo calcium imaging reveals neuronal network activity with near-millisecond precision (2010) (246)
Spread of dendritic excitation in layer 2/3 pyramidal neurons in rat barrel cortex in vivo (1999) (242)
Spatial profile of dendritic calcium transients evoked by action potentials in rat neocortical pyramidal neurones. (1995) (237)
Supralinear Ca2+ Influx into Dendritic Tufts of Layer 2/3 Neocortical Pyramidal Neurons In Vitro and In Vivo (2003) (224)
Simultaneous BOLD fMRI and fiber-optic calcium recording in rat neocortex (2012) (213)
Live imaging of neurogenesis in the adult mouse hippocampus (2018) (212)
In vivo calcium imaging of neural network function. (2007) (206)
Background Synaptic Activity Is Sparse in Neocortex (2006) (192)
Dendritic Spikes in Apical Dendrites of Neocortical Layer 2/3 Pyramidal Neurons (2007) (189)
Optical Recording of Neuronal Activity with a Genetically-Encoded Calcium Indicator in Anesthetized and Freely Moving Mice (2010) (188)
Reorganization of cortical population activity imaged throughout long-term sensory deprivation (2012) (183)
New developments in multiphoton microscopy (2002) (161)
Radially expanding transglial calcium waves in the intact cerebellum (2009) (146)
Optical probing of neuronal ensemble activity (2009) (141)
The mesoSPIM initiative – open-source light-sheet microscopes for imaging cleared tissue (2019) (132)
Calcium indicator loading of neurons using single-cell electroporation (2007) (129)
In vivo calcium imaging of circuit activity in cerebellar cortex. (2005) (129)
Pathway-specific reorganization of projection neurons in somatosensory cortex during learning (2015) (128)
Specific Early and Late Oddball-Evoked Responses in Excitatory and Inhibitory Neurons of Mouse Auditory Cortex (2015) (113)
High-density multi-fiber photometry for studying large-scale brain circuit dynamics (2018) (112)
Distortion-free delivery of nanojoule femtosecond pulses from a Ti:sapphire laser through a hollow-core photonic crystal fiber. (2004) (108)
Boosting of Action Potential Backpropagation by Neocortical Network Activity In Vivo (2004) (100)
Spatially segregated feedforward and feedback neurons support differential odor processing in the lateral entorhinal cortex (2016) (97)
Long-range population dynamics of anatomically defined neocortical networks (2016) (97)
Inference of neuronal network spike dynamics and topology from calcium imaging data (2013) (96)
Ca2+ imaging in the mammalian brain in vivo. (2002) (91)
Miniaturization of Fluorescence Microscopes Using Fibre Optics (2002) (90)
New angles on neuronal dendrites in vivo. (2007) (87)
Steady or changing? Long-term monitoring of neuronal population activity (2013) (86)
Behavioral Strategy Determines Frontal or Posterior Location of Short-Term Memory in Neocortex (2018) (84)
Sindbis vector SINrep(nsP2S726): a tool for rapid heterologous expression with attenuated cytotoxicity in neurons (2004) (82)
Distinct Functional Properties of Primary and Posteromedial Visual Area of Mouse Neocortex (2012) (82)
Value-guided remapping of sensory cortex by lateral orbitofrontal cortex (2020) (80)
Miniaturization of two-photon microscopy for imaging in freely moving animals. (2013) (77)
The Challenge of Connecting the Dots in the B.R.A.I.N. (2013) (75)
Functional Imaging of Dentate Granule Cells in the Adult Mouse Hippocampus (2016) (73)
Dendritic NMDA spikes are necessary for timing-dependent associative LTP in CA3 pyramidal cells (2016) (68)
A brain-wide functional map of the serotonergic responses to acute stress and fluoxetine (2019) (66)
Competitive Calcium Binding: Implications for Dendritic Calcium Signaling (1998) (66)
Enhanced two-photon excitation through optical fiber by single-mode propagation in a large core. (2002) (64)
Tactile frequency discrimination is enhanced by circumventing neocortical adaptation (2014) (62)
Layer-specific integration of locomotion and sensory information in mouse barrel cortex (2019) (60)
In vivo Ca2+ imaging of dorsal horn neuronal populations in mouse spinal cord (2010) (56)
A Sensitive Dynamic and Active Pixel Vision Sensor for Color or Neural Imaging Applications (2017) (55)
Long-term self-renewing stem cells in the adult mouse hippocampus identified by intravital imaging (2020) (55)
Layer-Specific Refinement of Sensory Coding in Developing Mouse Barrel Cortex (2016) (54)
A Miniature Head-Mounted Neurotechnique Two-Photon Microscope: High-Resolution Brain Imaging in Freely Moving Animals (2001) (53)
Fiber-optic implant for simultaneous fluorescence-based calcium recordings and BOLD fMRI in mice (2018) (53)
Chronic imaging of cortical sensory map dynamics using a genetically encoded calcium indicator (2012) (53)
In vivo labeling of cortical astrocytes with sulforhodamine 101 (SR101). (2012) (52)
Representation of visual scenes by local neuronal populations in layer 2/3 of mouse visual cortex (2011) (52)
HelioScan: A software framework for controlling in vivo microscopy setups with high hardware flexibility, functional diversity and extendibility (2013) (52)
Miniaturized selective plane illumination microscopy for high-contrast in vivo fluorescence imaging. (2010) (51)
Optogenetically stimulating intact rat corticospinal tract post-stroke restores motor control through regionalized functional circuit formation (2017) (51)
Nonlinear anisotropic diffusion filtering of three-dimensional image data from two-photon microscopy. (2004) (49)
Enhanced fluorescence signal in nonlinear microscopy through supplementary fiber-optic light collection. (2009) (47)
Online correction of licking‐induced brain motion during two‐photon imaging with a tunable lens (2013) (47)
Postsynaptic Ca2+ Influx Mediated by Three Different Pathways during Synaptic Transmission at a Calyx-Type Synapse (1998) (47)
Novel Approaches to Monitor and Manipulate Single Neurons In Vivo (2004) (46)
A database and deep learning toolbox for noise-optimized, generalized spike inference from calcium imaging (2020) (45)
Ossified blood vessels in primary familial brain calcification elicit a neurotoxic astrocyte response (2019) (43)
Imaging in neuroscience : a laboratory manual (2011) (42)
Neuron to Astrocyte Communication via Cannabinoid Receptors Is Necessary for Sustained Epileptiform Activity in Rat Hippocampus (2012) (39)
Stimulus relevance modulates contrast adaptation in visual cortex (2016) (39)
Calibration of fluorescent calcium indicators. (2011) (38)
Chapter 10. In vivo measurements of blood flow and glial cell function with two-photon laser-scanning microscopy. (2008) (37)
Two-photon imaging and analysis of neural network dynamics (2011) (35)
Multiphoton in vivo imaging with a femtosecond semiconductor disk laser. (2017) (35)
Spatiotemporal refinement of signal flow through association cortex during learning (2019) (33)
A single-compartment model of calcium dynamics in nerve terminals and dendrites. (2015) (33)
An R-CaMP1.07 reporter mouse for cell-type-specific expression of a sensitive red fluorescent calcium indicator (2017) (33)
Dendrites as biochemical compartments (1999) (32)
Calcium influx during an action potential. (1998) (31)
Opto‐E‐Dura: A Soft, Stretchable ECoG Array for Multimodal, Multiscale Neuroscience (2020) (31)
Cortical Excitation:Inhibition Imbalance Causes Abnormal Brain Network Dynamics as Observed in Neurodevelopmental Disorders (2018) (30)
Two-photon imaging of spinal cord cellular networks (2013) (30)
Nonlinear anisotropic diffusion filtering of three-dimensional image data from two-photon microscopy (2003) (30)
Enhancement of CA3 hippocampal network activity by activation of group II metabotropic glutamate receptors (2011) (28)
In Vivo Measurements of Blood Flow and Glial Cell Function with Two-Photon Laser-Scanning Microscopy (2008) (27)
Post hoc immunostaining of GABAergic neuronal subtypes following in vivo two-photon calcium imaging in mouse neocortex (2011) (27)
Sensory and Behavioral Components of Neocortical Signal Flow in Discrimination Tasks with Short-Term Memory (2020) (27)
Sparse, reliable, and long-term stable representation of periodic whisker deflections in the mouse barrel cortex (2015) (25)
Microcircuit dynamics of map plasticity in barrel cortex (2014) (24)
Selective Regulation of NR2B by Protein Phosphatase-1 for the Control of the NMDA Receptor in Neuroprotection (2012) (23)
Raising the speed limit – fast Ca2+ handling in dendritic spines (2002) (22)
Model-based analysis of pattern motion processing in mouse primary visual cortex (2015) (22)
In vivo Ca 2 + imaging of dorsal horn neuronal populations in mouse spinal cord (2010) (22)
Representation of Thermal Information in the Antennal Lobe of Leaf-Cutting Ants (2010) (21)
Brain mapping across 16 autism mouse models reveals a spectrum of functional connectivity subtypes (2021) (20)
Context-dependent limb movement encoding in neuronal populations of motor cortex (2019) (20)
Activity in a Premotor Cortical Nucleus of Zebra Finches Is Locally Organized and Exhibits Auditory Selectivity in Neurons but Not in Glia (2013) (20)
Whole brain optoacoustic tomography reveals strain-specific regional beta-amyloid densities in Alzheimer’s disease amyloidosis models (2020) (18)
Tissue Clearing and Light Sheet Microscopy: Imaging the Unsectioned Adult Zebra Finch Brain at Cellular Resolution (2019) (18)
iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem (2019) (17)
Two-Photon Functional Imaging of Neuronal Activity (2009) (17)
A modular two-photon microscope for simultaneous imaging of distant cortical areas in vivo (2015) (16)
Neocortical Dynamics During Whisker-Based Sensory Discrimination in Head-Restrained Mice (2018) (15)
Biochemical compartmentalization in dendrites (2007) (14)
Corrigendum: Deep tissue two-photon microscopy (2006) (14)
The mesoSPIM initiative: open-source light-sheet mesoscopes for imaging in cleared tissue (2019) (14)
Optical Imaging of Neocortical Dynamics (2014) (13)
Correction: Brain mapping across 16 autism mouse models reveals a spectrum of functional connectivity subtypes (2020) (13)
Molecular Supralinear Ca 2 Influx into Dendritic Tufts of Layer 2 / 3 Neocortical Pyramidal Neurons In Vitro and In Vivo (2003) (13)
Developmental divergence of sensory stimulus representation in cortical interneurons (2020) (13)
High-speed two-photon calcium imaging of neuronal population activity using acousto-optic deflectors. (2014) (10)
Prion pathogenesis is unaltered in a mouse strain with a permeable blood-brain barrier (2018) (10)
Sensory representation of an auditory cued tactile stimulus in the posterior parietal cortex of the mouse (2018) (10)
Calibration protocols for fluorescent calcium indicators. (2011) (9)
In Vivo Calcium Imaging of CA3 Pyramidal Neuron Populations in Adult Mouse Hippocampus (2021) (9)
Unsupervised behaviour analysis and magnification (uBAM) using deep learning (2021) (8)
Functional Architecture and Encoding of Tactile Sensorimotor Behavior in Rat Posterior Parietal Cortex (2019) (8)
Multiscale optical and optoacoustic imaging of amyloid-β deposits in mice (2022) (8)
Deep learning is widely applicable to phenotyping embryonic development and disease (2021) (8)
In-vivo imaging of neural activity with dynamic vision sensors (2017) (7)
In-Depth Characterization of Layer 5 Output Neurons of the Primary Somatosensory Cortex Innervating the Mouse Dorsal Spinal Cord (2020) (7)
Synaptic inhibition in the lateral habenula shapes reward anticipation (2021) (7)
Chronic Two-Photon Imaging of Neural Activity in the Anesthetized and Awake Behaving Rodent (2014) (6)
Conservation laws by virtue of scale symmetries in neural systems (2020) (6)
Layer-specific integration of locomotion and concurrent wall touching in mouse barrel cortex (2018) (6)
Temporal refinement of sensory‐evoked activity across layers in developing mouse barrel cortex (2019) (6)
Cortical excitation:inhibition imbalance causes network-specific functional hypoconnectivity: a DREADD-fMRI study (2018) (5)
Measuring neuronal population activity using 3D laser scanning. (2011) (5)
Isotropic imaging across spatial scales with axially swept light-sheet microscopy (2021) (5)
Basomedial amygdala activity in mice reflects specific and general aversion uncontrollability (2020) (5)
Two-Photon Imaging of Neuronal Network Dynamics in Neocortex (2014) (5)
Dendritic integration of sensory and reward information facilitates learning (2021) (5)
Spatiotemporal refinement of signal flow through association cortex during learning (2020) (4)
New views into the brain of mice on the move (2008) (4)
3D Reconstruction of the Clarified Rat Hindbrain Choroid Plexus (2021) (4)
Neural Systems Under Change of Scale (2021) (4)
Specific excitatory connectivity for feature integration in mouse primary visual cortex (2017) (4)
Axel Nimmerjahn Parenchyma in Vivo Resting Microglial Cells Are Highly Dynamic Surveillants of Brain (2013) (3)
Value-guided remapping of sensory circuits by lateral orbitofrontal cortex in reversal learning (2020) (3)
4.39 – Action Potentials in Dendrites and Spike-Timing-Dependent Plasticity (2008) (3)
uBAM: Unsupervised Behavior Analysis and Magnification using Deep Learning (2020) (3)
Striatum-projecting prefrontal cortex neurons support working memory maintenance (2021) (3)
Dendritic Branch-constrained N-Methyl-d-Aspartate Receptor-mediated Spikes Drive Synaptic Plasticity in Hippocampal CA3 Pyramidal Cells (2021) (3)
A single compartment model of calcium dynamics in dendrites and nerve terminals (2011) (3)
Dynamic reorganization of the cortico-basal ganglia-thalamo-cortical network during task learning (2022) (3)
Network constraints in scale free dynamical systems. (2019) (3)
, Surveillants of Brain Parenchyma in Vivo Resting Microglial Cells Are Highly Dynamic (2010) (2)
Opto-E-Dura: a Soft, Stretchable ECoG Array for Multimodal, Multi-scale Neuroscience (2020) (2)
Mesoscale brain dynamics reorganizes and stabilizes during learning (2020) (2)
Centripetal integration of past events by hippocampal astrocytes (2022) (2)
Imaging and analysis of neural network dynamics (2011) (1)
Conditional genetic labeling of the Renshaw cell population for functional studies of motor control (2009) (1)
Optogenetic analysis of mammalian neural circuits (2013) (1)
Little Strokes Fill Big Oaks: A Simple In Vivo Stain of Brain Cells (2007) (1)
Whole‐brain microscopy reveals distinct temporal and spatial efficacy of anti‐Aβ therapies (2022) (1)
Handbook of Neural Activity Measurement: Calcium imaging (2012) (1)
Value-guided remapping of sensory cortex (2021) (1)
Reflective multi-immersion microscope objectives inspired by the Schmidt telescope (2022) (1)
Chronic in vivo imaging defines age-dependent alterations of neurogenesis in the mouse hippocampus (2023) (1)
Innovative Methodology New Angles on Neuronal Dendrites In Vivo (2007) (1)
Nigral Dopamine Neurons Endogenous Calcium Buffering Capacity of Substantia (2015) (0)
Erratum: Fluctuations and stimulus-induced changes in blood flow observed in individual capillaries in layers 2 through 4 of rat neocortex (Proceedings of the National Academy of Sciences of the United States of America (December 22, 1998)) (1999) (0)
Behavioral and Multi-Photon Analysis of Plaid Stimulus Integration in the Zebrafish Visual Tectum (2008) (0)
EXPLORE: a novel deep learning-based analysis method for exploration behaviour in object recognition tests (2022) (0)
Population activity induced in the hippocampal network (2006) (0)
Live demonstration: In-vivo imaging of neural activity with dynamic vision sensors (2017) (0)
Behavior-relevant top-down cross-modal predictions in mouse neocortex (2023) (0)
Editorial Board (2013) (0)
Automated whole organ imaging using open source tools (2019) (0)
TWO-PHOTON MICROSCOPY OF NEURAL NETWORK FUNCTION (2011) (0)
High-density multi-fiber photometry for studying large-scale brain circuit dynamics (2019) (0)
Distinct hypothalamus-habenula circuits govern risk preference (2023) (0)
Post hoc immunostaining of GABAergic neuronal subtypes following in vivo two-photon calcium imaging in mouse neocortex (2011) (0)
Ultrafast semiconductor disk lasers for in vivo multiphoton imaging (2017) (0)
Imaging the Cortical Representation of Active Sensing in the Vibrissa System (2015) (0)
Estimating anisotropy directly via neural timeseries (2021) (0)
In vivo FM: using conventional fluorescence microscopy to monitor retinal neuronal death in vivo (2002) (0)
FAST 3D 2-PHOTON CALCIUM IMAGING IN THE ANTENNAL LOBE OF DROSOPHILA (2011) (0)
Analogous cognitive strategies for tactile learning in the rodent and human brain (2023) (0)
Conservative significance testing of tripartite statistical relations in multivariate neural data (2022) (0)
Scaling conservation laws in neural systems (2020) (0)
Neuronal networks in the spotlight (2013) (0)
Imaging of localized neuronal calcium influx (2001) (0)
Three-dimensional imaging of neuronal network activity (2011) (0)
Whole-mouse clearing and imaging at the cellular level with vDISCO (2023) (0)
Neocortex in the Spotlight: Concepts, Questions, and Methods (2014) (0)
Sensory representation of an auditory cued tactile stimulus in the posterior parietal cortex of the mouse (2018) (0)
Quantitative 3D microscopy reveals a genetic network predicting the local activity of anti-Aβ compounds (2021) (0)
Viral expression of Yellow cameleon 3.60 allows optical single-spike detection using two-photon imaging in vivo (2009) (0)
Optogenetically stimulating intact rat corticospinal tract post-stroke restores motor control through regionalized functional circuit formation (2017) (0)
Fiber-optic two-photon-excited fluorescence microscopy (2004) (0)
Multiphoton microscopy in every lab: the promise of ultrafast semiconductor disk lasers (2017) (0)
Author response: Long-range population dynamics of anatomically defined neocortical networks (2016) (0)
Author Correction: A brain-wide functional map of the serotonergic responses to acute stress and fluoxetine (2021) (0)
Layer-specific integration of locomotion and sensory information in mouse barrel cortex (2019) (0)
Femtosecond semiconductor disk lasers: a promising tool for the future of multiphoton imaging (2018) (0)
The mesoSPIM initiative: open-source light-sheet microscopes for imaging cleared tissue (2019) (0)
Introduction Calibration of Fluorescent Calcium Indicators (2011) (0)
Sensory representation of a cued tactile stimulus in the posterior parietal cortex of the mouse (2017) (0)
Chapter 321 – In Vivo Imaging of Cellular Network Signaling (2010) (0)
A brain-wide functional map of the serotonergic responses to acute stress and fluoxetine (2019) (0)
In vivo calcium imaging of information processing in mouse neocortex during behavior (2015) (0)
History information emerges in the cortex during learning (2022) (0)
Stimulus reconstruction from in vivo spiking activity of neuronal populations in somatosensory cortex (2007) (0)
Local predictors of anti-Aβ therapy efficacy revealed by quantitative whole-brain microscopy (2021) (0)
Estimating quantities conserved by virtue of scale invariance in timeseries (2019) (0)
in vivoFrom The Cover : Imaging input and output of neocortical networks (2005) (0)
Animals Miniaturization of Two-Photon Microscopy for Imaging in Freely Moving (2014) (0)
Reflective multi-immersion microscope objectives (2023) (0)
Conservative Significance Testing of Tripartite Interactions in Multivariate Neural Data (2022) (0)
Longitudinal quantitative whole-brain microscopy reveals distinct temporal and spatial efficacies of anti-Aβ therapies (2022) (0)

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What Schools Are Affiliated With Fritjof Helmchen?

Fritjof Helmchen is affiliated with the following schools:

Fritjof Helmchen's Academic­Influence.com Rankings