Interaural time and intensity difference thresholds of the pigeon (Columba livia)

@article{Lewald2004InterauralTA,
  title={Interaural time and intensity difference thresholds of the pigeon (Columba livia)},
  author={J. Lewald},
  journal={Naturwissenschaften},
  year={2004},
  volume={74},
  pages={449-451}
}
  • J. Lewald
  • Published 2004
  • Biology, Medicine
  • Naturwissenschaften
ples contained ectocarpene, which would be the main photochemical product to be expected, light-induced racemization of hormosirene can be excluded. These analytical results are in contrast to findings in other pheromone systems of marine brown algae. In viridiene, [(+)-(3R,4S)-3-(1Z,3-butadienyl)-4vinylcyclopentene], the male-attractant of Syringoderma phinneyi, a similar approach showed the presence o f an optically pure compound [12]. Biological activity tests with male gametes of Cutleria… Expand
The directionality of the ear of the pigeon (Columba livia)
  • J. Lewald
  • Physics
  • Journal of Comparative Physiology A
  • 2004
SummaryThe directionality of cochlear microphonic potentials in the azimuthal plane was investigated in the pigeon (Columba livia), using acoustic free-field stimulation (pure tones of 0.25–6 kHz).AtExpand
Neuronal coding of azimuthai sound direction in the auditory midbrain of the pigeon
  • J. Lewald
  • Biology, Medicine
  • Naturwissenschaften
  • 2004
TLDR
Neurons of the reticular format ion seem to play a role in altering the state of consciousness and alertness and pressure may possibly compensate for the increase in transmitter release due to anesthetics as discussed above. Expand
Neural mechanisms of directional hearing in the pigeon
  • J. Lewald
  • Psychology, Medicine
  • Experimental Brain Research
  • 2004
TLDR
The results confirm the concept that the mechanisms of azimuthal sound localization in the pigeon correspond essentially to the principles of the duplex theory which has postulated two distinct binaural mechanisms of directional hearing. Expand
Azimuthal sound localization in the European starling (Sturnus vulgaris): II. Psychophysical results
TLDR
An improvement of the starling’s MAA with an increasing number of standard stimulus presentations prior to the test stimulus has important implications for determining relative (MAA) localization thresholds. Expand
Azimuthal sound localization in the European starling (Sturnus vulgaris)
TLDR
Although some sound transmission via the interaural canal occurred, the present experiments support the hypothesis 2 above that the starling's peripheral auditory system is best described as consisting of two functionally decoupled pressure receivers. Expand
Neural coding in the chick cochlear nucleus
TLDR
The hypothesis that NM initiates a neural pathway which codes temporal information while NA is involved primarily with intensity coding, similar in principle to the segregation of function seen in the cochlear nucleus of the barn owl, is discussed. Expand
Sound Localization in Birds
TLDR
Without the ability to localize a sound, a bird’s auditory world would be a cacophony of environmental sounds and vocalizations, and through the mechanisms of sound localization it may be able to form auditory objects and thus could more easily separate its flock mates’ calls from the acoustic background produced by other sources. Expand
Sound lateralization in Parkinson's disease.
TLDR
It is proposed that this deficit in auditory spatial perception seen in PD patients may be related to a potential role of the basal ganglia in spatial hearing functions, as has been suggested by neurophysiological and neuroanatomical studies on animals. Expand
Azimuthal sound localization in the European starling (<Emphasis Type="Italic">Sturnus vulgaris</Emphasis>)
  • 2004

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The acuity of sound localization in the pigeon (Columba livia)
  • J. Lewald
  • Biology, Medicine
  • Naturwissenschaften
  • 2004
TLDR
The minimum resolvable angle was measured using heart-rate conditioning for the first time and it was determined whether an acceleration of heart beat during the test tones was significant compared to the reference tones (one-tailed error probability 2.5%). Expand
The interaural pathway and auditory localization: Cochlear microphonic measures in free field sound
Cochlear microphonic 1.0 μV thresholds and phase were measured in pigeons exposed to free‐field sound stimulation of varying horizontal azimuths. The pigeons were anesthetized and mounted on aExpand
Model for the interaural time differences in the azimuthal plane
An objective study of the steady‐state interaural time difference (ITD) was performed on a manikin comprised of a head and torso. Data were taken for both a bare and clothed torso. The measured ITD’sExpand
"J."
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)Expand
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