Maki Ikebuchi

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The Bengalese finch is the domesticated strain of the wild white-rumped munia. Bengalese finches have been domesticated and reproductively isolated for over 250 years from the wild strain. During this period, the courtship songs of the domesticated birds became phonologically and syntactically complex. In addition, psychological and physiological stress(More)
The avian nucleus taeniae of the amygdala (TnA) corresponds to part of the mammalian medial amygdala. Like its mammalian counterpart, it has been shown to be involved in the control of social function. According to behavioral observations, such control is already necessary early in the ontogenetic development of a bird. If so, TnA should be one of the(More)
Males of territorial songbird species have to remember a large number of conspecific songs to defend their territories, while non-territorial songbirds do not need to. A study of a territorial species suggested seemingly unlimited auditory memory size. We measured auditory memory in Bengalese finches, a non-territorial songbird species, to examine whether(More)
It is well established that the responses of binaural auditory neurons can adapt and change dramatically depending on the nature of a preceding sound. Examples of how the effects of ensuing stimuli play a functional role in auditory processing include motion sensitivity and precedence-like effects. To date, these types of effects have been documented at the(More)
Neuroanatomical studies including pathway tracing and cytochemical characterizations have suggested that the avian nucleus taeniae of the amygdala (TnA) might be homologous to a part of the mammalian medial amygdala. Recent behavioral observations in TnA-lesioned birds also reported deficits in the control of motivational aspects of behavior, advancing the(More)
We developed a neural network model for studying neural mechanisms underlying complex syntactical songs of the Bengalese finch, which result from interactions between sensori-motor nuclei, the nucleus HVC (HVC) and the nucleus interfacialis (NIf). Results of simulations are tested by comparison with the song development of real young birds learning the same(More)
We examined differences in the fear response between Bengalese finches and their wild ancestor, the white-backed munia, to explore the evolutionary mechanisms of behavioural changes due to domestication. The Bengalese finch (Lonchura striata var. domestica) was domesticated from the wild-living white-backed munia (L. striata) approximately 250 years ago. A(More)
The purpose of our work is measurement of 3D distance between a cup as an artificial acetabular and a head as an artificial femoral head in a patient body from AP and lateral Roentgen images without known angle between AP (anteriorposterior) and lateral after THR (total hip replacement). Martell measured the 2D distance between a cup and a head of an(More)
Male Bengalese finches sing directed songs in response to video images of females projected onto a thin-film transistor monitor. We used this experimental paradigm to elucidate which properties of visual stimuli are important for eliciting singing. When video recordings of female Bengalese or zebra finches were used as visual stimuli, only images of(More)
The purpose of our study is a measurement of 3D (three dimensional) distance between an artificial cement-type cup and a artificial femoral head in a living patient's body after THR(total hip replacement) from an AP(anterior-posterior) Roentgen image and a lateral image, when the angle between the two images is unknown. Recently we proposed a measurement(More)