Sascha Helduser

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Birds can rely on a variety of cues for orientation during migration and homing. Celestial rotation provides the key information for the development of a functioning star and/or sun compass. This celestial compass seems to be the primary reference for calibrating the other orientation systems including the magnetic compass. Thus, detection of the celestial(More)
Most behavior is composed of action sequences. Pigeons were often used as a model to study sequence learning and execution. Yet, virtually nothing is known about the neural structures underlying sequential behavior in pigeons. We therefore applied a serial reaction time task (SRTT) that is commonly used to investigate sequential behavior. During task(More)
The execution of action sequences is the basis of most behavior. However, little is known about the neural foundation of visuomotor sequence execution in birds, although pigeons are a classic model animal to study sequence learning and production. Recently, we identified two structures in the pigeon brain, the nidopallium intermedium medialis pars laterale(More)
44 The execution of action sequences is the basis of most behavior. However, little is 45 known about the neural foundation of visuomotor sequence execution in birds, 46 although pigeons are a classic model animal to study sequence learning and 47 production. Recently, we identified two structures in the pigeon brain, the nidopallium 48 intermedium medialis(More)
The active generation of behavioral variability is thought to be a pivotal element in reinforcement based learning. One example for this principle is song learning in oscine birds. Oscines possess a highly specialized set of brain areas that compose the song system. It is yet unclear how the song system evolved. One important hypothesis assumes a motor(More)
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