Toshinori Hongo

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Monkeys learned to use forceps to pick up food. The learning progressed in two stages. After having understood the task to have to use forceps through guidance, they (1) brought forceps toward food without seeing food until it was reached (1st stage), and (2) made forceps reach accurately to food using vision (2nd stage). We suggest that the learning(More)
The initial process of learning forceps-use movements was studied in two monkeys who had already learned to pick a piece of food using a hand-held forceps. When the task was changed and the monkeys had to reach-to-grasp the forceps themselves, they did not perform the movement and required help to initiate the movement. When prompted, they performed an act(More)
Effects from group II muscle afferents on gastrocnemius-soleus (G-S) motoneurones were compared in unanaesthetized anaemically decerebrated high (C1) and low (Th10) spinal cats. The proportion of G-S motoneurones receiving group II excitation was about the same in low and in high spinal cats. No overall decrease in the strength of group II excitation could(More)
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