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List of works by Fritjof Helmchen

20 Calcium influx during an action potential

scientific article published on 01 January 1998

A Sensitive Dynamic and Active Pixel Vision Sensor for Color or Neural Imaging Applications.

scientific article published in February 2018

A brain-wide functional map of the serotonergic responses to acute stress and fluoxetine

scientific article published in Nature Communications

A database and deep learning toolbox for noise-optimized, generalized spike inference from calcium imaging

scientific article published on 02 August 2021

A single-compartment model of calcium dynamics in nerve terminals and dendrites

scientific article published on 2 February 2015

Activity in a premotor cortical nucleus of zebra finches is locally organized and exhibits auditory selectivity in neurons but not in glia

scientific article

An R-CaMP1.07 reporter mouse for cell-type-specific expression of a sensitive red fluorescent calcium indicator

scientific article

Background synaptic activity is sparse in neocortex.

scientific article published in August 2006

Barrel cortex function

scientific article

Behavioral Strategy Determines Frontal or Posterior Location of Short-Term Memory in Neocortex

scientific article published on 09 August 2018

Behaviour-dependent recruitment of long-range projection neurons in somatosensory cortex

scientific article published on 23 June 2013

Boosting of action potential backpropagation by neocortical network activity in vivo.

scientific article published in December 2004

Brain mapping across 16 autism mouse models reveals a spectrum of functional connectivity subtypes

scientific article published on 11 August 2021

Ca2+ imaging in the mammalian brain in vivo

scientific article

Calcium indicator loading of neurons using single-cell electroporation

scientific article published on 2 March 2007

Calibration Protocols for Fluorescent Calcium Indicators: Figure 1 ⬇️

scientific article published on August 1, 2011

Calibration of Fluorescent Calcium Indicators ⬇️

scientific article published on 01 August 2011

Chapter 10. In vivo measurements of blood flow and glial cell function with two-photon laser-scanning microscopy

scientific article

Chronic imaging of cortical sensory map dynamics using a genetically encoded calcium indicator

scientific article published on 14 November 2011

Competitive calcium binding: implications for dendritic calcium signaling

scientific article published on July 1, 1998

Conservation laws by virtue of scale symmetries in neural systems

scientific article published on 04 May 2020

Context-dependent limb movement encoding in neuronal populations of motor cortex

scientific article published on 23 October 2019

Cortical Excitation:Inhibition Imbalance Causes Abnormal Brain Network Dynamics as Observed in Neurodevelopmental Disorders

scientific article published on 21 April 2020

Dendritic NMDA spikes are necessary for timing-dependent associative LTP in CA3 pyramidal cells

scientific article

Dendritic spikes in apical dendrites of neocortical layer 2/3 pyramidal neurons

scientific article published on 01 August 2007

Developmental divergence of sensory stimulus representation in cortical interneurons

scientific article published on 12 November 2020

Distinct Functional Properties of Primary and Posteromedial Visual Area of Mouse Neocortex ⬇️

scientific article published on July 11, 2012

Distortion-free delivery of nanojoule femtosecond pulses from a Ti:sapphire laser through a hollow-core photonic crystal fiber

scientific article published in June 2004

Enhanced fluorescence signal in nonlinear microscopy through supplementary fiber-optic light collection

scientific article published in April 2009

Enhanced two-photon excitation through optical fiber by single-mode propagation in a large core

scientific article published on 01 May 2002

Enhancement of CA3 hippocampal network activity by activation of group II metabotropic glutamate receptors

scientific article

Fast two-layer two-photon imaging of neuronal cell populations using an electrically tunable lens

scientific article

Fiber-optic implant for simultaneous fluorescence-based calcium recordings and BOLD fMRI in mice

scientific article published on 29 March 2018

Functional Architecture and Encoding of Tactile Sensorimotor Behavior in Rat Posterior Parietal Cortex

scientific article published on 22 July 2019

Functional Imaging of Dentate Granule Cells in the Adult Mouse Hippocampus.

scientific article published on July 2016

HelioScan: a software framework for controlling in vivo microscopy setups with high hardware flexibility, functional diversity and extendibility.

scientific article

High-density multi-fiber photometry for studying large-scale brain circuit dynamics

scientific article published on 13 May 2019

High-speed in vivo calcium imaging reveals neuronal network activity with near-millisecond precision

scientific article

High-speed two-photon calcium imaging of neuronal population activity using acousto-optic deflectors

scientific article

Imaging cellular network dynamics in three dimensions using fast 3D laser scanning

scientific article published on 3 December 2006

Imaging input and output of neocortical networks in vivo

scientific article

In vivo Ca2+ imaging of dorsal horn neuronal populations in mouse spinal cord

scientific article

In vivo calcium imaging of circuit activity in cerebellar cortex

scientific article published on 20 April 2005

In vivo calcium imaging of neural network function

scientific article published on December 2007

In vivo labeling of cortical astrocytes with sulforhodamine 101 (SR101).

scientific article published in March 2012

Inference of neuronal network spike dynamics and topology from calcium imaging data

scientific article

Layer-Specific Refinement of Sensory Coding in Developing Mouse Barrel Cortex

scientific article

Layer-specific integration of locomotion and sensory information in mouse barrel cortex.

scientific article published on 13 June 2019

Lentivirus-based genetic manipulations of cortical neurons and their optical and electrophysiological monitoring in vivo

scientific article

Little strokes fill big oaks: a simple in vivo stain of brain cells

scientific article published in March 2007

Live imaging of neurogenesis in the adult mouse hippocampus.

scientific article published in February 2018

Long-range population dynamics of anatomically defined neocortical networks

scientific article

Long-term self-renewing stem cells in the adult mouse hippocampus identified by intravital imaging

scientific article published on 21 December 2020

Measuring neuronal population activity using 3D laser scanning

scientific article

Microcircuit dynamics of map plasticity in barrel cortex

scientific article published on 22 September 2013

Miniaturization of fluorescence microscopes using fibre optics

scientific article

Miniaturization of two-photon microscopy for imaging in freely moving animals

scientific article

Miniaturized selective plane illumination microscopy for high-contrast in vivo fluorescence imaging

scientific article published in May 2010

Miniaturized two-photon microscope based on a flexible coherent fiber bundle and a gradient-index lens objective

scientific article

Model-based analysis of pattern motion processing in mouse primary visual cortex.

scientific article published on 5 August 2015

Multiphoton in vivo imaging with a femtosecond semiconductor disk laser

scientific article

Neocortical dynamics during whisker-based sensory discrimination in head-restrained mice

scientific article

Neuron to astrocyte communication via cannabinoid receptors is necessary for sustained epileptiform activity in rat hippocampus

scientific article

New angles on neuronal dendrites in vivo

scientific article

New developments in multiphoton microscopy

scientific article

New views into the brain of mice on the move

scientific article published in November 2008

Nonlinear anisotropic diffusion filtering of three-dimensional image data from two-photon microscopy

scientific article

Novel approaches to monitor and manipulate single neurons in vivo.

scientific article published in October 2004

Online correction of licking-induced brain motion during two-photon imaging with a tunable lens

scientific article published on 12 August 2013

Optical probing of neuronal ensemble activity

scientific article published on 23 October 2009

Optical recording of neuronal activity with a genetically-encoded calcium indicator in anesthetized and freely moving mice

scientific article

Opto-E-Dura: A Soft, Stretchable ECoG Array for Multimodal, Multiscale Neuroscience

scientific article published on 21 July 2020

Optogenetically stimulating intact rat corticospinal tract post-stroke restores motor control through regionalized functional circuit formation

scientific article published on 30 October 2017

Ossified blood vessels in primary familial brain calcification elicit a neurotoxic astrocyte response

Pathway-specific reorganization of projection neurons in somatosensory cortex during learning

scientific article published on 22 June 2015

Post hoc immunostaining of GABAergic neuronal subtypes following in vivo two-photon calcium imaging in mouse neocortex

scientific article published on 2 December 2011

Prion pathogenesis is unaltered in a mouse strain with a permeable blood-brain barrier

scientific article published on 29 November 2018

Radially expanding transglial calcium waves in the intact cerebellum

scientific article

Raising the speed limit--fast Ca(2+) handling in dendritic spines

scientific article

Rapid 3D light-sheet microscopy with a tunable lens

scientific article

Reflective multi-immersion microscope objectives inspired by the Schmidt telescope

scientific article published in 2023

Reorganization of cortical population activity imaged throughout long-term sensory deprivation

scientific article

Representation of thermal information in the antennal lobe of leaf-cutting ants

scientific article

Representation of visual scenes by local neuronal populations in layer 2/3 of mouse visual cortex.

scientific article published on 12 December 2011

Resting microglial cells are highly dynamic surveillants of brain parenchyma in vivo

scientific article (publication date: 27 May 2005)

Scanning fiber endoscopy with highly flexible, 1 mm catheterscopes for wide-field, full-color imaging

scientific article (publication date: June 2010)

Selective regulation of NR2B by protein phosphatase-1 for the control of the NMDA receptor in neuroprotection

scientific article

Sensory and Behavioral Components of Neocortical Signal Flow in Discrimination Tasks with Short-Term Memory

scientific article published on 29 October 2020

Sensory representation of an auditory cued tactile stimulus in the posterior parietal cortex of the mouse.

scientific article

Simultaneous BOLD fMRI and fiber-optic calcium recording in rat neocortex

scientific article published on 6 May 2012

Sindbis vector SINrep(nsP2S726): a tool for rapid heterologous expression with attenuated cytotoxicity in neurons

scientific article published in February 2004

Sparse, reliable, and long-term stable representation of periodic whisker deflections in the mouse barrel cortex

scientific article

Spatial organization of neuronal population responses in layer 2/3 of rat barrel cortex

scientific article published in November 2007

Spatially segregated feedforward and feedback neurons support differential odor processing in the lateral entorhinal cortex

scientific article

Spatiotemporal refinement of signal flow through association cortex during learning

scientific article published on 08 April 2020

Specific Early and Late Oddball-Evoked Responses in Excitatory and Inhibitory Neurons of Mouse Auditory Cortex

scientific article published in September 2015

Specific excitatory connectivity for feature integration in mouse primary visual cortex

Specific excitatory connectivity for feature integration in mouse primary visual cortex.

scientific article published on 14 December 2017

Steady or changing? Long-term monitoring of neuronal population activity

scientific article published on 19 April 2013

Stimulus relevance modulates contrast adaptation in visual cortex.

scientific article published on 28 January 2017

Sulforhodamine 101 as a specific marker of astroglia in the neocortex in vivo

scientific article

Supralinear Ca2+ influx into dendritic tufts of layer 2/3 neocortical pyramidal neurons in vitro and in vivo.

scientific article published in September 2003

Tactile frequency discrimination is enhanced by circumventing neocortical adaptation.

scientific article published on 21 September 2014

Temporal refinement of sensory-evoked activity across layers in developing mouse barrel cortex

scientific article published on 02 May 2019

The challenge of connecting the dots in the B.R.A.I.N.

scientific article published on October 2013

The mesoSPIM initiative: open-source light-sheet microscopes for imaging cleared tissue

scientific article published on 16 September 2019

Tissue Clearing and Light Sheet Microscopy: Imaging the Unsectioned Adult Zebra Finch Brain at Cellular Resolution

Transgenic mice for intersectional targeting of neural sensors and effectors with high specificity and performance

scientific article

Two-photon imaging of spinal cord cellular networks

scientific article published on 28 July 2012

Ultra-compact fiber-optic two-photon microscope for functional fluorescence imaging in vivo

scientific article

Value-guided remapping of sensory cortex by lateral orbitofrontal cortex

scientific article published on 03 September 2020

iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem

scientific article published on 13 February 2019

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