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Some Comments on a Recent Theory of Stereopsis
(1980-07-01)
A number of developments have taken place since the formulation of Marr and Poggio's theory of human stereo vision. In particular, these concern the shape of the underlying receptive fields, the control of eye movements ...
On the Representation of Angular Velocity and Its Effect on the Efficiency of Manipulator Dynamics Computation
(1981-03-01)
Recently there has been considerable interest in efficient formulations of manipulator dynamics, mostly due to the desirability of real-time control or analysis of physical devices using modest computers. The inefficiency ...
Thinking About Lots of Things at Once without Getting Confused: Parallelism in Act 1
(1981-05-01)
As advances in computer architecture and changing economics make feasible machines with large-scale parallelism, Artificial Intelligence will require new ways of thinking about computation that can exploit parallelism ...
Nonlinear Interactions in a Dendritic Tree: Localization, Timing and Role in Information Processing
(1981-09-01)
In a dendritic tree transient synaptic inputs activating ionic conductances with an equilibrium potential near the resting potential can veto very effectively other excitatory inputs. Analog operations of this type can ...
Qualitative Process Theory
(1983-05-01)
Things move, collide, flow, bend, heat up, cool down, stretch, break and boil. These and other things that happen to cause changes in objects over time are intuitively characterized as processes. To understand common ...
Policy-Protocol Interaction in Composite Processes
(1982-09-01)
Message policy is defined to be the description of the disposition of messages of a single type, when received by a group of processes. Group policy applies to all the processes of a group, but for a single message ...
Dynamic Scaling of Manipulator Trajectories
(1983-01-01)
A fundamental time-scaling property of manipulator dynamics has been identified that allows modification of movement speed without complete dynamics recalculation. By exploiting this property, it can be determined ...
Information Processing in Dendritic Spines
(1983-03-01)
Dendritic spines are small twigs on the dendrites of a very large class of neurons in the central nervous system. There are between 10 (3) and 10 (5) spines per neuron, each one including at least one synapse, i.e. a ...
Ill-Posed Problems and Regularization Analysis in Early Vision
(1984-04-01)
One of the best definitions of early vision is that it is inverse optics --- a set of computational problems that both machines and biological organisms have to solve. While in classical optics the problem is to determine ...
The Coordination of Arm Movements: An Experimentally Confirmed Mathematical Model
(1984-11-01)
This paper presents studies of the coordination f voluntary human arm movements. A mathematical model is formulated which is shown to predict both the qualitative features and the quantitative details observed ...