Response selectivity for species-specific calls in the inferior colliculus of Mexican free-tailed bats is generated by inhibition.

@article{Klug2002ResponseSF,
  title={Response selectivity for species-specific calls in the inferior colliculus of Mexican free-tailed bats is generated by inhibition.},
  author={Achim Klug and Eric E Bauer and Josh T. Hanson and Laura M. Hurley and John Meitzen and George D. Pollak},
  journal={Journal of neurophysiology},
  year={2002},
  volume={88 4},
  pages={
          1941-54
        }
}
Here we show that inhibition shapes diverse responses to species-specific calls in the inferior colliculus (IC) of Mexican free-tailed bats. We presented 10 calls to each neuron of which 8 were social communication and 2 were echolocation calls. We also measured excitatory response regions: the range of tone burst frequencies that evoked discharges at a fixed intensity. The calls evoked highly selective responses in that IC neurons responded to some calls but not others even though those calls… Expand
Spectral determination of responses to species-specific calls in the dorsal nucleus of the lateral lemniscus.
TLDR
It is shown that DNLL responses evoked by complex sounds can be largely explained by a simple summation of the excitation in each neuron's ERR, and that the DNLL population response re-creates both the spectral and the temporal features of each signal. Expand
The Repertoire of Communication Calls Emitted by Bats and the Ways the Calls Are Processed in the Inferior Colliculus
Bats have among the richest and most sophisticated repertoire of vocal communication calls of any mammalian group. In this review, we first describe the range of calls bats emit and the acousticExpand
Spectrotemporal Receptive Fields in the Inferior Colliculus Revealing Selectivity for Spectral Motion in Conspecific Vocalizations
TLDR
It is shown that responses to tones are in close agreement with the STRF and that the responses predicted by convolutions compare favorably with responses evoked by those calls, suggesting that inhibition shapes FM direction selectivity in the IC. Expand
Responses to social vocalizations in the inferior colliculus of the mustached bat are influenced by secondary tuning curves.
TLDR
The results suggest that complex frequency interactions in the IC determine neural responses to social vocalizations and some neurons in IC have dual functions that encode both echolocation and social vocalization signals. Expand
Differing roles of inhibition in hierarchical processing of species-specific calls in auditory brainstem nuclei.
TLDR
It is shown that inhibition plays only limited roles in the DNLL and INLL but dominates in the IC, where the various patterns of inhibition sculpt a wide variety of emergent response properties from the backdrop of more expansive and far less specific excitatory innervation. Expand
Serotonin modulates responses to species-specific vocalizations in the inferior colliculus
TLDR
The effects of iontophoretically applied serotonin on the responses of individual inferior colliculus neurons to a variety of recorded species-specific vocalizations were examined and it was found that a functional consequence of these serotonin-evoked changes would be to change the population response to species- specific vocalizations. Expand
Neural Response Selectivity to Natural Sounds in the Bat Midbrain
TLDR
Using advanced signal processing methods, fine differences in temporal structure of these natural sounds that appear key to auditory discrimination and behavioral decisions are identified and point to general mechanisms of natural sound processing across species. Expand
Combination sensitivity and processing of communication calls in the inferior colliculus of the Moustached Bat Pteronotus parnellii.
  • C. Portfors
  • Biology, Medicine
  • Anais da Academia Brasileira de Ciencias
  • 2004
TLDR
These studies of the auditory midbrain of the Moustached Bat Pteronotus parnellii have revealed a neural mechanism important for generating selective responses to calls, and "Combination sensitivity" may be a common mechanism for encoding complex sounds because it is also important for encoding echolocation signals. Expand
Processing and representation of species-specific communication calls in the auditory system of bats.
TLDR
There is an important role for combination sensitivity in both communication and echolocation, but combination sensitivity is far more complex than originally thought, since cortical neurons have multiple, distinct specialized modes of response for each type of signal. Expand
The dominant role of inhibition in creating response selectivities for communication calls in the brainstem auditory system
  • G. Pollak
  • Biology, Medicine
  • Hearing Research
  • 2013
This review is concerned with how communication calls are processed and represented by populations of neurons in both the inferior colliculus (IC), the auditory midbrain nucleus, and the dorsalExpand
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