Results 61 to 70 of about 19,334 (183)

Different theta frameworks coexist in the rat hippocampus and are coordinated during memory-guided and novelty tasks

open access: yeseLife, 2020
Hippocampal firing is organized in theta sequences controlled by internal memory processes and by external sensory cues, but how these computations are coordinated is not fully understood.
Víctor J López-Madrona   +7 more
doaj   +1 more source

Closed-Loop Transcranial Ultrasound Stimulation for Real-Time Non-invasive Neuromodulation in vivo

open access: yesFrontiers in Neuroscience, 2020
The closed-loop brain stimulation technique plays a key role in neural network information processing and therapies of neurological diseases. Transcranial ultrasound stimulation (TUS) is an established neuromodulation method for the neural oscillation in
Huifang Yang   +3 more
doaj   +1 more source

Theta Rhythm: Temporal Glue for Episodic Memory [PDF]

open access: yesCurrent Biology, 2017
The low frequency theta rhythm is thought to promote the formation of long-term multimodal memories in the hippocampus by orchestrating input from multiple cortical sources. New research has demonstrated a causal association between the timing of experimentally induced theta rhythms and episodic memory formation in humans.
Sam C, Berens, Aidan J, Horner
openaire   +2 more sources

Theta Oscillations and Reactivity of Hippocampal Stratum Oriens Neurons

open access: yesThe Scientific World Journal, 2010
The supposition was advanced that the neuronal theta rhythmicity is the key mode of signal selection at the hippocampal level. To address this hypothesis, the experimental data on the responses of putative hippocampal interneurons of the stratum oriens ...
Valentina F. Kitchigina
doaj   +1 more source

Theta rhythm and the encoding and retrieval of space and time [PDF]

open access: yesNeuroImage, 2014
Physiological data demonstrates theta frequency oscillations associated with memory function and spatial behavior. Modeling and data from animals provide a perspective on the functional role of theta rhythm, including correlations with behavioral performance and coding by timing of spikes relative to phase of oscillations.
Michael E. Hasselmo, Chantal E. Stern
openaire   +2 more sources

Speed and Oscillations: Medial Septum Integration of Attention and Navigation

open access: yesFrontiers in Systems Neuroscience, 2017
Several cortical and diencephalic limbic brain regions incorporate neurons that fire in correlation with the speed of whole-body motion, also known as linear velocity.
Marian Tsanov
doaj   +1 more source

Septo-hippocampal connections and the hippocampal theta rhythm

open access: yesExperimental Brain Research, 1979
Recordings were made of spontaneous hippocampal theta activity in free-moving rats, before and after a variety of lesions. Three recording sites were used to monitor activity in the dorsal hippocampus, the ventral hippocampus, or close to the site of the hippocampal flexure.
Rawlins, J, Feldon, J, Gray, J
openaire   +3 more sources

Theta Rhythm and Memory [PDF]

open access: yesScience, 1972
W. R. Klemm   +3 more
  +5 more sources

GABAergic Neurons in the Rat Medial Septal Complex Express Relaxin-3 Receptor (RXFP3) mRNA

open access: yesFrontiers in Neuroanatomy, 2018
The medial septum (MS) complex modulates hippocampal function and related behaviors. Septohippocampal projections promote and control different forms of hippocampal synchronization.
Hector Albert-Gascó   +8 more
doaj   +1 more source

Theta-modulated place-by-direction cells in the hippocampal formation in the rat

open access: yes, 2004
We report the spatial and temporal properties of a class of cells termed theta-modulated place-by-direction (TPD) cells recorded from the presubicular and parasubicular cortices of the rat. The firing characteristics of TPD cells in open-field enclosures
Wills, TJ   +4 more
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