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Schlegel, Ulrike; Hjallar, Viktor A.; Lensjø, Kristian; Uggerud, Ida Margrethe; Bjaalie, Jan G. & Hvoslef-Eide, Martha
[Show all 8 contributors for this article]
(2022).
Mapping of parahippocampal and visual neural networks in mice: Preliminary evidence for feedback projections from perirhinal cortex to visual areas.
Show summary
Feedback projections from higher-order processing areas to lower-order areas within the visual system havebeen observed in several species. While much is known about the function of feedforward connections in thevisual processing pathway, feedback connections are not as well studied. They are thought to cause behaviorssuch as (selective) attention or expectations, but the exact mechanism and underlying neural connectivity isstill unknown. The perirhinal cortex (PRH) forms the intersection between perceptual and mnemonic areas ofthe visual processing pathway. Evidence from rats, monkeys and humans suggests that it is involved in bothobject memory and perceptual tasks, which is reflected in its connectivity. PRH forms numerous feedforwardand feedback projections with other areas of the visual processing pathway. However, little is known about thefunction and organization of feedback projections from PRH, and other parahippocampal regions, to visualareas in mice. Given the widespread availability of genetic and molecular tools, novel opportunities toinvestigate the function of these feedback projections would be enabled by mapping them in mice. Here wepresent preliminary data from anterograde and retrograde tract tracing experiments showing feedbackprojections from PRH, and other parahippocampal regions, to visual areas. We have found first evidence forfeedback projections from PRH to lower-order visual areas that were assumed to be exclusive to higher-developed animals such as monkeys or humans. Further, we have identified feedback projections from otherparahippocampal regions with specific subregional distribution.
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Røe, Malin Benum; Aasebø, Ida Elisabeth Jørgensen; Mobarhan, Milad; Lensjø, Kristian Kinden; Einevoll, Gaute & Hafting, Torkel
[Show all 7 contributors for this article]
(2019).
Stable orientation tuning in the freely moving rat: Movement-robust orientation-selective neurons in the deep layers of the primary visual cortex.
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Røe, Malin Benum; Aasebø, Ida Elisabeth Jørgensen; Mobarhan, Milad; Lensjø, Kristian Kinden; Einevoll, Gaute & Hafting, Torkel
[Show all 7 contributors for this article]
(2019).
Stable orientation tuning in the freely moving rat: Movement-robust orientation-selective neurons in the deep layers of the primary visual cortex.
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Røe, Malin Benum; Aasebø, Ida Elisabeth Jørgensen; Mobarhan, Milad; Lensjø, Kristian Kinden; Stöber, Tristan Manfred & Einevoll, Gaute
[Show all 8 contributors for this article]
(2018).
Stable orientation tuning in the freely moving rat: Movement-robust orientation-selective neurons in the deep layers of the primary visual cortex.
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Grødem, Sverre; Sandvik, Guro Katrine; Hazen, Jennifer; Lensjø, Kristian Kinden; Hafting, Torkel & Fyhn, Marianne
(2018).
A CRISPR-Cas9 platform for genetic perturbations of brain extracellular matrix regulators in vivo
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Lensjø, Kristian Kinden; Rowlands, Daire; Dinh, Tovy; Thompson, Elise Holter; Andrews, Melissa & Hafting, Torkel
[Show all 9 contributors for this article]
(2018).
Conditional knock-out of the Acan gene removes perineuronal nets in adult mice and induces life-long brian plasticity.
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Røe, Malin Benum; Aasebø, Ida Elisabeth Jørgensen; Mobarhan, Milad; Lensjø, Kristian Kinden; Einevoll, Gaute & Hafting, Torkel
[Show all 7 contributors for this article]
(2018).
Stable orientation tuning in the freely moving rat: Movement-robust orientation selective neurons in the deep layers of the primary visual cortex.
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Aasebø, Ida Elisabeth Jørgensen; Røe, Malin Benum; Mobarhan, Milad; Lensjø, Kristian Kinden; Stöber, Tristan Manfred & Einevoll, Gaute
[Show all 8 contributors for this article]
(2018).
Orientation selectivity in the freely moving rat: Movement-robust orientation-selectivity (MROS) of units in the deep layers of the rat visual cortex
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Røe, Malin Benum; Aasebø, Ida Elisabeth Jørgensen; Mobarhan, Milad; Lensjø, Kristian Kinden; Einevoll, Gaute & Hafting, Torkel
[Show all 7 contributors for this article]
(2018).
Movement-resistant orientation selectivity of cells in the deep layers of the rat visual cortex.
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Aasebø, Ida E. J.; Mobarhan, Milad; Røe, Malin Benum; Lensjø, Kristian Kinden; Einevoll, Gaute & Hafting, Torkel
[Show all 7 contributors for this article]
(2017).
Movement-resistant orientation-selective units in the deep layers of the visual cortex.
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Thompson, Elise Holter; Lensjø, Kristian Kinden; Wigestrand, Mattis B; Hafting, Torkel; Malthe-Sørenssen, Anders & Fyhn, Marianne
(2017).
The perineuronal nets in the lateral secondary visual cortex are essential for remote visual fear memory.
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Dinh, Tovy; Lensjø, Kristian Kinden; Lanton, Rune Alexander; Dick, Gunnar; Fyhn, Marianne & Hafting, Torkel
(2017).
Increased ocular dominance plasticity in adult visual cortex after genetic knock out of aggrecan, an essential component of perineuronal nets.
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Blackstad, Jan Sigurd; Christensen, Ane Charlotte; Lensjø, Kristian Kinden; Hafting, Torkel & Fyhn, Marianne
(2016).
Involvement of perineuronal nets in spatial information transfer between the entorhinal cortex and hippocampus.
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Blackstad, Jan Sigurd; Christensen, Ane Charlotte; Lensjø, Kristian Kinden; Hafting, Torkel & Fyhn, Marianne
(2016).
Involvement of perineuronal nets in spatial information transfer between the entorhinal cortex and hippocampus.
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Thompson, Elise Holter; Lensjø, Kristian Kinden; Wigestrand, Mattis B; Hafting, Torkel; Fyhn, Marianne & Malthe-Sørenssen, Anders
(2016).
The perineuronal nets in the lateral secondary visual cortex are essential for remote visual memory.
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Lepperød, Mikkel Elle; Wigestrand, Mattis B; Frey, Mina Martine; Lensjø, Kristian Kinden; Einevoll, Gaute & Solstad, Trygve
[Show all 8 contributors for this article]
(2016).
On the role of input-specific perturbations of medial septal projections to the grid cell network.
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Røe, Malin Benum; Aasebø, Ida E. J.; Lensjø, Kristian Kinden; Hafting, Torkel & Fyhn, Marianne
(2016).
Orientation selective cells in layer six of the primary visual cortex are resistant to the animal's movement.
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Thompson, Elise Holter; Lensjø, Kristian Kinden; Wigestrand, Mattis B; Hafting, Torkel & Fyhn, Marianne
(2016).
The perineuronal nets in the lateral secondary visual cortex and their impact on remote visual fear memory.
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Lensjø, Kristian Kinden; Lepperød, Mikkel Elle; Dick, Gunnar; Hafting, Torkel & Fyhn, Marianne
(2016).
Removal of perineuronal nets affects information processing and plasticity in the primary visual cortex.
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Lepperød, Mikkel Elle; Wigestrand, Mattis B; Lensjø, Kristian Kinden; Frey, M.M.; Dragly, Svenn-Arne & Einevoll, Gaute
[Show all 9 contributors for this article]
(2016).
Grid cell network resilient to input-specific medial septum perturbations.
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Lepperød, Mikkel Elle; Wigestrand, Mattis B; Frey, M.M.; Lensjø, Kristian Kinden; Einevoll, Gaute & Solstad, Trygve
[Show all 8 contributors for this article]
(2016).
Role of input-specific perturbations of medial septal projections to the grid cell network.
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Lepperød, Mikkel Elle; Lensjø, Kristian Kinden; Christensen, Ane Charlotte; Fyhn, Marianne; Hafting, Torkel & Einevoll, Gaute
(2015).
Building an entorhinal cortex network.
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Lensjø, Kristian Kinden; Lepperød, Bjørn Mikkel Elle; Dick, Gunnar; Hafting, Torkel & Fyhn, Marianne
(2015).
Removal of perineuronal nets in the visual cortex leads to a reduced inhibition and mimics critical period plasticity
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Christensen, Ane Charlotte; Lensjø, Kristian Kinden; Lepperød, Bjørn Mikkel Elle; Fyhn, Marianne & Hafting, Torkel
(2015).
The role of extracellular matrix molecules for spatial representations and plasticity in
entorhinal cortex.
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Hafting, Torkel; Lensjø, Kristian Kinden; Christensen, Ane Charlotte; Dick, Gunnar & Fyhn, Marianne
(2014).
Perineuronal nets, plasticity and information-processing in visual cortex, medial entorhinal cortex and hippocampus.
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Aasebø, Ida E. J.; Norheim, Eivind Skjønsberg; Lensjø, Kristian Kinden; Fyhn, Marianne & Fyhn, Torkel Hafting
(2013).
The effect of anesthesia on activity and modulation of visually responsive neurons in cortical and subcortical areas.
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Lensjø, Kristian Kinden; Dick, Gunnar; Fyhn, Torkel Hafting & Fyhn, Marianne
(2013).
Cortical processing in awake, behaving rats after removal of perineuronal nets.