| Presentation | 2016-03-22 Cerebellar neural network model for resolving tilt-translation ambiguity Yoshiki Iida, Keiichiro Inagaki, Yutaka Hirata, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | According to Einstein’s equivalence principle, accelerations in translational motion are physically indistinguishable from gravitational accelerations caused by tilt. This applies to our biological linear accelerometers, the otolith organs. It is known that primary otolith afferent neurons respond equivalently during linear and tilt motions if their trajectories are appropriately matched, while we can perceive these two motions properly as different motions. Recent studies in monkey demonstrated that output of cerebellar vermis selectively encodes translational motion during tilt-translation combining stimuli. Theoretically, the tilt-translation ambiguity problem can be solved by using information about angular velocity during tilt. In support, it is reported that the dissociation of translation from tilt in vermal Purkinje cells is no longer possible in monkeys whose semicircular canals were plugged and angular velocity information was not available. Therefore, it is postulated that the tilt-translation ambiguity problem is solved in the vermis by using information from the otolith and semicircular canals. In this study, we reconfigured our cerebellar neuronal network model for vestibuloocular reflex adaptation and developed a model of cerebellar vermis to understand its role in solving tilt-translation ambiguity. We show that the model successfully reproduces vermal Purkinje cell responses encoding selectively translation information during tilt-translation combining stimuli. When we shut-down semicircular canal input to the model by mimicking canal plugging, model Purkinje cells showed activities more like those of otolith primary afferent neurons. From these results, it is suggested that the developed model is useful to explore underlying mechanisms of the tilt-translation ambiguity problem. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Vestibular / Spatial orientation / Cerebellar vermis / Model simulation / Motion perception |
| Paper # | NC2015-96 |
| Date of Issue | 2016-03-15 (NC) |
| Conference Information | |
| Committee | MBE / NC |
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| Conference Date | 2016/3/22(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tamagawa University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tetsuo Kobayashi(Kyoto Univ.) / Toshimichi Saito(Hosei Univ.) |
| Vice Chair | Yutaka Fukuoka(Kogakuin Univ.) / Shigeo Sato(Tohoku Univ.) |
| Secretary | Yutaka Fukuoka(akita noken) / Shigeo Sato(Kogakuin Univ.) |
| Assistant | Takenori Oida(Kyoto Univ.) / Ryota Horie(Shibaura Inst. of Tech.) / Hiroyuki Kanbara(Tokyo Inst. of Tech.) / Hisanao Akima(Tohoku Univ.) |
| Paper Information | |
| Registration To | Technical Committee on ME and Bio Cybernetics / Technical Committee on Neurocomputing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Cerebellar neural network model for resolving tilt-translation ambiguity |
| Sub Title (in English) | |
| Keyword(1) | Vestibular |
| Keyword(2) | Spatial orientation |
| Keyword(3) | Cerebellar vermis |
| Keyword(4) | Model simulation |
| Keyword(5) | Motion perception |
| 1st Author's Name | Yoshiki Iida |
| 1st Author's Affiliation | Chubu University(Chubu University) |
| 2nd Author's Name | Keiichiro Inagaki |
| 2nd Author's Affiliation | Chubu University(Chubu University) |
| 3rd Author's Name | Yutaka Hirata |
| 3rd Author's Affiliation | Chubu University(Chubu University) |
| Date | 2016-03-22 |
| Paper # | NC2015-96 |
| Volume (vol) | vol.115 |
| Number (no) | NC-514 |
| Page | pp.pp.155-160(NC), |
| #Pages | 6 |
| Date of Issue | 2016-03-15 (NC) |