Results 21 to 30 of about 7,170,848 (305)
Clinical applications of resting state functional connectivity
Frontiers in Systems Neuroscience, 2010 During resting conditions the brain remains functionally and metabolically active. One manifestation of this activity that has become an important research tool is spontaneous fluctuations in the blood oxygen level dependent (BOLD) signal of fMRI.
Michael D Fox, Michael Greicius
doaj +1 more source
Spontaneous and evoked activity patterns diverge over development
eLife, 2021 The immature brain is highly spontaneously active. Over development this activity must be integrated with emerging patterns of stimulus-evoked activity, but little is known about how this occurs.
Lilach Avitan +5 more
doaj +1 more source
Frontiers in Human Neuroscience, 2015 Spontaneous neural activity within visual cortex is synchronized by both monosynaptic, hierarchical connections between visual areas and indirect, network-level activity.
Omar H Butt +3 more
doaj +1 more source
Spontaneous Activity in Crustacean Neurons [PDF]
The Journal of General Physiology, 1962 Single units which discharged with regular spontaneous rhythms without intentional stimulation were observed in the ventral nerve cord by intracellular recording close to the sixth abdominal ganglion. These units were divided into two groups: group A units in which interspike intervals varied less than 10 msec.; group B units in which interspike ...
J B, PRESTON, D, KENNEDY
openaire +2 more sources
Sloppiness in Spontaneously Active Neuronal Networks [PDF]
The Journal of Neuroscience, 2015 Various plasticity mechanisms, including experience-dependent, spontaneous, as well as homeostatic ones, continuously remodel neural circuits. Yet, despite fluctuations in the properties of single neurons and synapses, the behavior and function of neuronal assemblies are generally found to be very stable over time. This raises the important question of
Dagmara Panas +6 more
openaire +2 more sources
Beyond dreams: do sleep-related movements contribute to brain development?
Frontiers in Neurology, 2010 Conventional wisdom has long held that the twitches of sleeping infants and adults are by-products of a dreaming brain. With the discovery of active (or REM) sleep in the 1950s and the recognition soon thereafter that active sleep is characterized by ...
Mark S Blumberg
doaj +1 more source
Rhythmic Spontaneous Activity in the Piriform Cortex [PDF]
Cerebral Cortex, 2007 Slow spontaneous rhythmic activity is generated and propagates in neocortical slices when bathed in an artificial cerebrospinal fluid with ionic concentrations similar to the ones in vivo. This activity is extraordinarily similar to the activation of the cortex in physiological conditions (e.g., slow-wave sleep), thus representing a unique in vitro ...
Sánchez-Vives, María V. +5 more
openaire +3 more sources
Frontiers in Integrative Neuroscience, 2010 The cerebral cortex is never silent; even in primary sensory areas there is ongoing neural activity in the absence of sensory input. Correlations in spontaneous activity can provide clues about network structure, but it has been difficult to record from ...
Yeang H Ch'Ng, Clay Reid
doaj +1 more source
cAMP-Dependent Co-stabilization of Axonal Arbors from Adjacent Developing Neurons
Cell Reports, 2020 Summary: Axonal arbors in many neuronal networks are exuberant early during development and become refined by activity-dependent competitive mechanisms. Theoretical work proposed non-competitive interactions between co-active axons to co-stabilize their ...
Alice Louail +10 more
doaj +1 more source
Estimation of coherence between blood flow and spontaneous EEG activity in neonates [PDF]
, 2005 Blood flow to the brain responds to changes in neuronal activity and, thus, metabolic demand. In earlier work, we observed correlation between cerebral blood flow and spontaneous electroencephalogram (EEG) activity in neonates.
Infantosi, A.F.C. +3 more
core +1 more source