Abstract：
:How do biological agents plan and organise a smooth accurate path to shift from one smooth mode of behaviour to another as part of graceful movement that is both plastic and controlled? This paper addresses the question in conducting a novel shape analysis of approach and adjustment phases in rapid voluntary target aiming and 2-D reaching hand actions. A number of mode changing experiments are reported that investigate these actions under a range of goals and conditions. After a typically roughly aimed approach, regular projective adjustment is observed that has height and velocity kinematic profiles that are scaled copies of one another. This empirical property is encapsulated as a novel self-similar shift function. The mathematics shows that the biological shifts consist of continual deviation from their full Taylor series everywhere throughout their interval, which is a deep form of plasticity not described before. The experimental results find the same approach and adjustment strategy to occur with behavioural trajectories over the full and varied range of tested goals and conditions. The trajectory shapes have a large degree of predictability through using the shift function to handle extensive variation in the trajectories' adjustment across individual behaviours and subjects. We provide connections between the behavioural features and results and various neural studies to show how the methodology may be exploited. The conclusion is that a roughly aimed approach followed by a specific highly plastic shift adjustment can provide a regular basis for fast and accurate goal-directed motion in a simple and generalisable way.
journal_name
Biol Cybernjournal_title
Biological cyberneticsauthors
Weir MK,Wale APdoi
10.1007/s00422-011-0449-3subject
Has Abstractpub_date
2011-08-01 00:00:00pages
89-119issue
2eissn
0340-1200issn
1432-0770journal_volume
105pub_type
杂志文章abstract：:Fitzhugh's BVP model has been used by many people. Fitzhugh has pointed out that as the stimulus is increased the model has "inverted" behaviour. It is here shown that this is due to a lack of a mechanism of inactivation, and the model is adjusted by supplying such a mechanism, to give a new model, called BPH, which, ...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00344278
更新日期：1982-01-01 00:00:00
abstract：:The response of a population of neurons to time-varying synaptic inputs can show a rich phenomenology, hardly predictable from the dynamical properties of the membrane's inherent time constants. For example, a network of neurons in a state of spontaneous activity can respond significantly more rapidly than each single...
journal_title：Biological cybernetics
pub_type： 杂志文章,评审
doi：10.1007/s00422-008-0270-9
更新日期：2008-11-01 00:00:00
abstract：:Many neurons at the sensory periphery receive periodic input, and their activity exhibits entrainment to this input in the form of a preferred phase for firing. This article describes a modeling study of neurons which skip a random number of cycles of the stimulus between firings over a large range of input intensitie...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00198810
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00203629
更新日期：1990-01-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00355540
更新日期：1986-01-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-016-0706-6
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s004220050355
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-007-0167-z
更新日期：2007-09-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章,评审
doi：10.1007/s00422-008-0237-x
更新日期：2008-11-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00201423
更新日期：1995-08-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-006-0088-2
更新日期：2006-09-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00197609
更新日期：1994-01-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00201798
更新日期：1992-01-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00209424
更新日期：1996-06-01 00:00:00
abstract：:Stable signal transmission is crucial for information processing by the brain. Synfire-chains, defined as feed-forward networks of spiking neurons, are a well-studied class of circuit structure that can propagate a packet of single spikes while maintaining a fixed packet profile. Here, we studied the stable propagatio...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-008-0246-9
更新日期：2008-08-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-006-0064-x
更新日期：2006-07-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00340063
更新日期：1983-01-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00198772
更新日期：1993-01-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-011-0447-5
更新日期：2011-07-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00336926
更新日期：1983-01-01 00:00:00
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pub_type： 杂志文章
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更新日期：2002-04-01 00:00:00
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journal_title：Biological cybernetics
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doi：10.1007/BF00347640
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00199134
更新日期：1996-01-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00652225
更新日期：1996-03-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
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更新日期：2012-12-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00347638
更新日期：1980-01-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
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更新日期：2014-12-01 00:00:00
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journal_title：Biological cybernetics
pub_type： 杂志文章
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journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-003-0432-8
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