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The goal of our research is to understand the neuronal mechanisms of voluntary behavior. Our everyday behavior is controlled in various ways. A particular behavior may be evoked reflexively by external events. It may be guided by recent or old emotional experiences. It may be chosen deliberately out of many alternatives. It may be executed automatically and subconsciously, yet leading to beneficial outcomes. None of them can be done without the brain. This means that the brain has various mechanisms for controlling behavior. In fact, the brain is composed of many areas that seem to function differently. It is thus crucial to understand how these brain areas interact with each other. How do emotional experiences affect particular body movements, such as eye movements? Why do we look and choose particular objects out of many other objects? Where in the brain are these functions accomplished, and how? We may choose particular objects deliberately or automatically? Are the deliberate and automatic choices controlled by different brain mechanisms? Do they work independently? If so, how is the final choice made? One of our research projects is focused on the functions of the basal ganglia which seem to be involved in most of the above functions. Indeed, dysfunctions of the basal ganglia lead to various kinds of behavioral disorders which affect body movements, motivation, emotion, cognitive functions, goal-directed behavior, skill, and/or habit. We also study other brain areas that are connected with the basal ganglia: the cerebral cortical areas that provide the basal ganglia with sensorimotor-emotional signals; neuromodulatory systems (e.g., dopamine, serotonin), which may modulate the sensorimotor-emotional signals in the basal ganglia; and limbic systems (e.g., habenula), which may guide the neuromodulatory systems. We address these questions using behavioral, electrophysiological, and pharmacological methods.
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Yasuo Terao, Hideki Fukuda,Okihide Hikosaka, Akihiro Yugeta,Shun-ichi Matsuda, Francesco Fisicaro,Yoshikazu Ugawa, Kyoko Hoshino,Yoshiko Nomura
CLINICAL NEUROPHYSIOLOGY (2024): 73-87
bioRxiv : the preprint server for biology (2024)
Brain sciencesno. 12 (2023)
IBRO Neuroscience Reports (2023): S685-S685
IBRO Neuroscience Reports (2023): S858-S859
Gabriela Costello,Okihide Hikosaka
IBRO Neuroscience Reports (2023): S829
Journal of Visionno. 9 (2023): 5855-5855
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biorxiv(2023)
bioRxiv (Cold Spring Harbor Laboratory) (2023)
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bioRxiv : the preprint server for biology (2023)
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