Potential roles of spontaneous activity of olfactory receptor neurons in the olfactory behavior of Drosophila larvae

2018 ◽  
Author(s):  
Nao Utashiro
Keyword(s):  
Spontaneous Activity ◽  
Olfactory Receptor ◽  
Olfactory Receptor Neurons ◽  
Olfactory Behavior ◽  
Drosophila Larvae ◽  
Receptor Neurons

scholarly journals Prior activity of olfactory receptor neurons is required for proper sensory processing and behavior in Drosophila larvae

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Nao Utashiro ◽  
Claire R. Williams ◽  
Jay Z. Parrish ◽  
Kazuo Emoto
Keyword(s):  
Sensory Processing ◽  
Olfactory Receptor ◽  
Olfactory Receptor Neurons ◽  
Drosophila Larvae ◽  
Receptor Neurons ◽  
And Behavior

scholarly journals Optogenetic olfactory behavior depends on illumination characteristics

2019 ◽  
Author(s):  
Tayfun Tumkaya ◽  
James Stewart ◽  
Safwan B. Burhanudin ◽  
Adam Claridge-Chang
Keyword(s):  
Neural Activity ◽  
Olfactory Receptor ◽  
Olfactory Receptor Neurons ◽  
Olfactory Behavior ◽  
Pulsed Light ◽  
Behavioral Experiments ◽  
Light Intensities ◽  
Light Stimuli ◽  
Receptor Neurons ◽  
Illumination Regime

AbstractOptogenetics has become an important tool for the study of behavior, enabling neuroscientists to infer causations by examining behavior after activating genetically circumscribed neurons with light. Light-induced neural activity is affected by illumination parameters used in experiments, such as intensity, duration, and frequency. Here, we hypothesized that the intensity of light and the presence of oscillations in illumination would alter optogenetically induced olfactory behaviours. To test this, we activated olfactory receptor neurons (ORNs) in Drosophila by using either static or pulsed light stimuli across a range of light intensities. The various regimes elicited distinct behavioral valence responses (attraction, aversion, indifference) from several ORN types. Our results demonstrate the importance of both frequency and intensity for interpreting optogenetic behavioral experiments accurately; successfully generalizing optogenetic results requires the use of more than a single illumination regime.

Contribution of HCN channels to the spontaneous activity in the mouse olfactory receptor neurons

2009 ◽  
Vol 65 ◽  
pp. S73
Author(s):  
Noriyuki Nakashima ◽  
Takahiro Ishii ◽  
Harunori Ohmori
Keyword(s):  
Spontaneous Activity ◽  
Olfactory Receptor ◽  
Olfactory Receptor Neurons ◽  
Hcn Channels ◽  
Receptor Neurons

HCN channels control spontaneous activity of olfactory receptor neurons through the basal activation of β2 adrenoreceptor

2011 ◽  
Vol 71 ◽  
pp. e84
Author(s):  
Noriyuki Nakashima ◽  
Takahiro Ishii ◽  
Harunori Ohmori
Keyword(s):  
Spontaneous Activity ◽  
Olfactory Receptor ◽  
Olfactory Receptor Neurons ◽  
Hcn Channels ◽  
Receptor Neurons

Patterns of spontaneous activity in single rat olfactory receptor neurons are different in normally breathing and tracheotomized animals

2005 ◽  
Vol 65 (2) ◽  
pp. 97-114 ◽  
Author(s):  
Patricia Duchamp-Viret ◽  
Lubomir Kostal ◽  
Michel Chaput ◽  
Petr Lánsky ◽  
Jean-Pierre Rospars
Keyword(s):  
Spontaneous Activity ◽  
Olfactory Receptor ◽  
Olfactory Receptor Neurons ◽  
Receptor Neurons

Physiological activity of newly differentiated olfactory receptor neurons correlated with morphological recovery from olfactory nerve section in the salamander

1981 ◽  
Vol 45 (3) ◽  
pp. 529-549 ◽  
Author(s):  
P. A. Simmons ◽  
T. V. Getchell
Keyword(s):  
Olfactory Bulb ◽  
Spontaneous Activity ◽  
Histological Examination ◽  
Olfactory Epithelium ◽  
Olfactory Receptor ◽  
Receptor Cell ◽  
Olfactory Nerve ◽  
Olfactory Receptor Neurons ◽  
Nerve Section ◽  
Receptor Neurons

1. Extracellular unitary recordings were made from the olfactory epithelium of the salamander, Ambystoma tigrinum, at numerous time points following olfactory nerve section. Unitary response properties were correlated with histological examination of the same tissues. 2. At 10 days following nerve section, unitary activity was rarely recorded in all regions of the epithelium. Histological examination indicated that virtually the entire mature olfactory receptor cell population had undergone retrograde degeneration. Transneuronal degeneration was not observed in the olfactory bulb, although the olfactory nerve and glomerular layers were substantially reduced in size. 3. At subsequent times, unitary impulse activity gradually returned, consisting of both spontaneous activity and odor-evoked discharges. Anatomical recovery of the olfactory epithelium preceded that of the olfactory bulb. A positive correlation was found between neuronal differentiation in the olfactory epithelium and the recovery of receptor cell function. 4. Patterns of spontaneous activity, odor specificities, intensity-response functions, and adaptive properties studied in newly differentiated olfactory receptor neurons were indistinguishable from those observed in control units. This indicated that these properties were intrinsic to the receptor neurons. 5. Spontaneously active and responsive units were encountered prior to olfactory nerve connection with the bulb. It is concluded that receptor neurons pass through two phases of functional maturity: the first independent of bulbar contact and the second dependent on presumed synaptic contact with bulbar neurons.

scholarly journals Randomness of spontaneous activity and information transfer in neurons

2008 ◽  
pp. S133-S138
Author(s):  
L Košťál ◽  
P Lánský
Keyword(s):  
Spontaneous Activity ◽  
Neuronal Activity ◽  
Coefficient Of Variation ◽  
Olfactory Receptor ◽  
Information Transfer ◽  
Olfactory Receptor Neurons ◽  
Information Coding ◽  
Receptor Neurons ◽  
Evoked Activity

The analysis of information coding in neurons requires methods that measure different properties of neuronal signals. In this paper we review the recently proposed measure of randomness and compare it to the coefficient of variation, which is the frequently employed measure of variability of spiking neuronal activity. We focus on the problem of the spontaneous activity of neurons, and we hypothesize that under defined conditions, spontaneous activity is more random than evoked activity. This hypothesis is supported by contrasting variability and randomness obtained from experimental recordings of olfactory receptor neurons in rats.

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