Dendritic mechanisms contribute to stimulus-specific adaptation in an insect neuron.
@article{Triblehorn2013DendriticMC, title={Dendritic mechanisms contribute to stimulus-specific adaptation in an insect neuron.}, author={Jeffrey D. Triblehorn and Johannes Schul}, journal={Journal of neurophysiology}, year={2013}, volume={110 9}, pages={ 2217-26 } }
Reduced neuronal activation to repetitive stimulation is a common feature of information processing in nervous systems. Such stimulus-specific adaptation (SSA) occurs in many systems, but the underlying neural mechanisms are not well understood. The Neoconocephalus (Orthoptera, Tettigoniidae) TN-1 auditory neuron exhibits an SSA-like process, characterized by reliably detecting deviant pulses after response cessation to common standard pulses. Therefore, TN-1 provides a model system to study…
14 Citations
Dynamic dendritic compartmentalization underlies stimulus-specific adaptation in an insect neuron.
- Biology, PsychologyJournal of neurophysiology
- 2015
It is confirmed that excitatory postsynaptic potentials rather than spiking cause the increase of dendritic calcium and sodium concentrations and that these increases remain limited to the stimulated parts of the dendrite, which supports the hypothesis of "dynamic d endritic compartmentalization" underlying SSA in this auditory interneuron.
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- Biology, PsychologyThe Journal of Neuroscience
- 2015
The findings elucidate the subcellular mechanism underlying SSA-like neuronal plasticity related to behavioral adaptation and suggest that input-selective depression mediated by heterogeneous Ca2+ dynamics could confer the ability to detect novelty at the earliest stages of sensory processing in crickets.
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- 2019
In the prothoracic ganglion of a bush-cricket, a cluster of local DUM (dorsal unpaired median) neurons has recently been described and constitutes a filter bank for carrier frequency, and it is demonstrated that these neurons also constitute afilter bank for temporal patterns.
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- BiologyJournal of neurophysiology
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Different dendritic regions of the cricket brain neuron DBNi1-2 showed localized Ca2+ increases when three modalities of stimulation (touch of the flagellum, strain at antennal base, and visual input) were given.
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- Biology
- 2016
In insects, auditory pathways can be explored and analyzed at the level of identified neurons to reveal fundamental mechanisms of auditory processing related to signal detection, directional processing, frequency discrimination, pattern recognition, and coping with self-generated noise.
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- BiologyJournal of Comparative Physiology A
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- BiologyThe Journal of Neuroscience
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Two neural mechanisms underlying the surprising behavioral signal detection at the level of single identified interneurons for signal detection are identified and are likely to be important for other sensory modalities, where noise in the communication channel creates similar problems.
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- 2018
It is suggested that chirpers evolved an additional, 2-kHz component in their song and exploited pre-existing neuronal properties for detecting their song under masking noise, and the failure of some interneurons to respond to the conspecific song in trillers does not prevent intraspecific communication.
Auditory DUM neurons in a bush‐cricket: A filter bank for carrier frequency
- BiologyThe Journal of comparative neurology
- 2018
Preliminary data suggest that auditory DUM neurons have GABA as transmitter and therefore may inhibit other auditory interneurons, which appear suited for local processing relevant for acoustic communication in bush crickets.
Direction-Specific Adaptation in Neuronal and Behavioral Responses of an Insect Mechanosensory System
- Biology
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Direction-Specific Adaptation in Neuronal and Behavioral Responses of an Insect Mechanosensory System and its Applications to Neuroscience and Behavior is studied.
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