Results 21 to 30 of about 2,140 (214)

Electro-oscillographic correlation between dorsal raphe nucleus, neocortex and hippocampus during wakefulness before and after serotoninergic inactivation

Brazilian Journal of Medical and Biological Research, 1999
Theta rhythm in many brain structures characterizes wakefulness and desynchronized sleep in most subprimate mammalian brains. In close relation to behaviors, theta frequency and voltage undergo a fine modulation which may involve mobilization of dorsal ...
E.T. Fonoff, C.P.C. Silva, G. Ballester, C. Timo-Iaria   +3 more
doaj   +1 more source

Ubiquitous Neocortical Decoding of Tactile Input Patterns

Frontiers in Cellular Neuroscience, 2019
Whereas functional localization historically has been a key concept in neuroscience, direct neuronal recordings show that input of a particular modality can be recorded well outside its primary receiving areas in the neocortex. Here, we wanted to explore
Jonas M. D. Enander, Anton Spanne, Alberto Mazzoni, Fredrik Bengtsson, Calogero Maria Oddo, Henrik Jörntell   +5 more
doaj   +1 more source

LIS1 determines cleavage plane positioning by regulating actomyosin-mediated cell membrane contractility

eLife, 2020
Heterozygous loss of human PAFAH1B1 (coding for LIS1) results in the disruption of neurogenesis and neuronal migration via dysregulation of microtubule (MT) stability and dynein motor function/localization that alters mitotic spindle orientation ...
Hyang Mi Moon, Simon Hippenmeyer, Liqun Luo, Anthony Wynshaw-Boris   +3 more
doaj   +1 more source

EZcalcium: Open-Source Toolbox for Analysis of Calcium Imaging Data

Frontiers in Neural Circuits, 2020
Fluorescence calcium imaging using a range of microscopy approaches, such as two-photon excitation or head-mounted “miniscopes,” is one of the preferred methods to record neuronal activity and glial signals in various experimental settings, including ...
Daniel A. Cantu, Daniel A. Cantu, Bo Wang, Michael W. Gongwer, Michael W. Gongwer, Cynthia X. He, Cynthia X. He, Anubhuti Goel, Anand Suresh, Nazim Kourdougli, Erica D. Arroyo, Erica D. Arroyo, William Zeiger, Carlos Portera-Cailliau, Carlos Portera-Cailliau   +14 more
doaj   +1 more source

Heterosynaptic plasticity in the neocortex [PDF]

Experimental Brain Research, 2009
Ongoing learning continuously shapes the distribution of neurons' synaptic weights in a system with plastic synapses. Plasticity may change the weights of synapses that were active during the induction-homosynaptic changes, but also may change synapses not active during the induction-heterosynaptic changes.
Chistiakova, Marina, Volgushev, Maxim
openaire   +2 more sources

Layer 2/3 Pyramidal Neurons of the Mouse Granular Retrosplenial Cortex and Their Innervation by Cortico-Cortical Axons

Frontiers in Neural Circuits, 2020
The retrosplenial cortex forms part of the cingulate cortex and is involved in memory and navigation. It is ventral region, the granular retrosplenial cortex, or GRSC is characterized by the presence, of small pyramidal neurons with a distinctive late ...
Rita M. Robles, Eduardo Domínguez-Sala, Salvador Martínez, Salvador Martínez, Emilio Geijo-Barrientos   +4 more
doaj   +1 more source

A Canonical Laminar Neocortical Circuit Whose Bottom-Up, Horizontal, and Top-Down Pathways Control Attention, Learning, and Prediction

Frontiers in Systems Neuroscience, 2021
All perceptual and cognitive circuits in the human cerebral cortex are organized into layers. Specializations of a canonical laminar network of bottom-up, horizontal, and top-down pathways carry out multiple kinds of biological intelligence across ...
Stephen Grossberg
doaj   +1 more source

Neuroplasticity Meets Artificial Intelligence: A Hippocampus-Inspired Approach to the Stability–Plasticity Dilemma

Brain Sciences
The stability–plasticity dilemma remains a critical challenge in developing artificial intelligence (AI) systems capable of continuous learning. This perspective paper presents a novel approach by drawing inspiration from the mammalian hippocampus–cortex
Thorsten Rudroff, Oona Rainio, Riku Klén   +2 more
doaj   +1 more source

Infrabarrels Are Layer 6 Circuit Modules in the Barrel Cortex that Link Long-Range Inputs and Outputs

Cell Reports, 2017
The rodent somatosensory cortex includes well-defined examples of cortical columns—the barrel columns—that extend throughout the cortical depth and are defined by discrete clusters of neurons in layer 4 (L4) called barrels.
Shane R. Crandall, Saundra L. Patrick, Scott J. Cruikshank, Barry W. Connors   +3 more
doaj   +1 more source

Thalamocortical axons control the cytoarchitecture of neocortical layers by area-specific supply of VGF

eLife, 2022
Neuronal abundance and thickness of each cortical layer are specific to each area, but how this fundamental feature arises during development remains poorly understood.
Haruka Sato, Jun Hatakeyama, Takuji Iwasato, Kimi Araki, Nobuhiko Yamamoto, Kenji Shimamura   +5 more
doaj   +1 more source