The personalized auditory cortex of the mustached bat: adaptation for echolocation.

@article{Suga1987ThePA,
  title={The personalized auditory cortex of the mustached bat: adaptation for echolocation.},
  author={Nobuo Suga and Hideto Niwa and I. Taniguchi and Daniel J. Margoliash},
  journal={Journal of neurophysiology},
  year={1987},
  volume={58 4},
  pages={
          643-54
        }
}
1. In the mustached bat, Pteronotus parnellii, the "resting" frequency of the constant-frequency component of the second harmonic (CF2) of the orientation sound (biosonar signal) is different among individuals within a range from 59.69 to 63.33 kHz. The standard deviation of CF2 resting frequency is 0.091 kHz on the average for individual bats. The male's CF2 resting frequency (61.250 +/- 0.534 kHz, n = 58) is 1.040 kHz lower than the female's (62.290 +/- 0.539 kHz, n = 58) on the average… 

Figures from this paper

Facilitatory and inhibitory frequency tuning of combination-sensitive neurons in the primary auditory cortex of mustached bats.

An increase in the sensitivity of DSCF neurons would lead to target detection from farther away and/or for smaller targets than previously estimated on the basis of single-tone responses to BF(high).

Postnatal maturation of primary auditory cortex in the mustached bat, Pteronotus parnellii.

Maturation of tonotopy, increase of tuning sharpness, and upward shift in the characteristic frequency of DSCF neurons appear to strongly reflect cochlear maturation in AI postnatal maturation.

Labile cochlear tuning in the mustached bat

The concomitant changes in CRF and CF2 provide evidence of cochlear tuning lability in the mustached bat, as well as associated shifts in neural tuning.

Labile cochlear tuning in the mustached bat

It is concluded that the adjustment of biosonar signals accommodates the shifts in cochlear and neural tuning that occur with active echolocation.

Spectral Integration in the Inferior Colliculus of the Mustached Bat

It is suggested that neuronal integration characterizing analysis of social vocalizations in many species occurs in the IC, and combination-sensitive interactions are activated by elements of mustached bat social vocalization.

Sex-dependent hemispheric asymmetries for processing frequency-modulated sounds in the primary auditory cortex of the mustached bat.

The results demonstrate a left hemispheric bias in males for the representation of a diverse array of FMs differing in rate and bandwidth, and propose that these asymmetries underlie lateralized processing of communication sounds and are common to species as divergent as bats and humans.

Modulation of responses and frequency tuning of thalamic and collicular neurons by cortical activation in mustached bats.

It is found that a focal activation of the DSCF area evokes highly specific corticofugal modulation in the inferior colliculus and medial geniculate body, which takes place for frequency domain analysis in exactly the same way as it does in time domain analysis.
...

References

SHOWING 1-10 OF 29 REFERENCES

Frequency and amplitude representations in anterior primary auditory cortex of the mustached bat.

The DSCF area is quite unique not only in its extensive representation of frequencies in the second harmonic CF component but also in its amplitopic representation.

Amplitude spectrum representation in the Doppler-shifted-CF processing area of the auditory cortex of the mustache bat.

The mustache bat, Pteronotus parnellii rubiginosus, emits orientation sounds containing a long constant-frequency (CF) component that is ideal for echo detection and Doppler shift measurement. About

Inhibition and level-tolerant frequency tuning in the auditory cortex of the mustached bat.

Electrophysiologically investigated the frequency tuning of CF/CF neurons for excitation, facilitation, and inhibition and concluded that sharp level-tolerant tuning curves are produced by inhibition.

Further studies on the peripheral auditory system of 'CF-FM' bats specialized for fine frequency analysis of Doppler-shifted echoes.

Since this animal predominantly uses a 61 kHz sound for echolocation and peripheral auditory neurones show a low threshold and extremely sharp tuning at about 61 kHz, its peripheral auditory system is specialized for the reception and fine-frequency analysis of the principle component of orientation sounds and echoes.

Detection of insect wing beats by the bat, Pteronotus parnellii

An investigation was made into one possible use of the “pure tone” portion of the echolocation signals of Pteronotus parnellii parnellii (Gray). It was verified that the echo of a constant frequency

Representation of Biosonar Information in the Auditory Cortex of the Mustached Bat, with Emphasis on Representation of Target Velocity Information

The echolocation system of the mustached bat as it has come to understand it is summarized, and the unpublished data which are related to neural representation of target-velocity information in the auditory cortex are presented.

Auditory Processing of Echoes: Representation of Acoustic Information from the Environment in the Bat Cerebral Cortex

This work focuses on differences in response properties among neurons as well as response properties per se within and among individual auditory nuclei in bats to explore neural mechanisms for signal processing.

Sexual differences in the auditory system of the tree frog Eleutherodactylus coqui.

Acoustic playback experiments with calling males in their natural habitat and two-choice orientation experiments with females indicate that males and females of the neotropical tree frog

How Biosonar Information is Represented in the Bat Cerebral Cortex

Except for the auditory cortex of the mustached bat, Pteronotus parnellii rubiginosus***, little is known about how this multiple representation is related to functional organization beyond frequency representation.