Browsing CAS/CNS Technical Reports by Title

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Browsing CAS/CNS Technical Reports by Title

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  • Aguilar, J. Mario; Contreras-Vidal, José L. (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1993-10)
    A neural network system, NAVITE, for incremental trajectory generation and obstacle avoidance is presented. Unlike other approaches, the system is effective in unstructured environments. Multimodal inforrnation from visual ...
  • Fiala, John C. (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1993-10)
    A model for self-organization of the coordinate transformations required for spatial reaching is presented. During a motor babbling phase, a mapping from spatial coordinate directions to joint motion directions is learned. ...
  • Ulloa, Antonio; Bullock, Daniel (Boston University Computer Science Department, 2001-05)
    A neural network model is presented, that extends principles of the VITE (vector integration to end-point) model [1, 2, 3, 4] of primate reaching to the more complex case of reach-grasp coordination. The main new planning ...
  • Dessing, Joost; Bullock, Daniel; Peper, C. (Lieke); Beck, Peter (Boston University Computer Science Department, 2001-01)
    Two prospective controllers of hand movements in catching -- both based on required velocity control -- were simulated. Under certain conditions, this required velocity controlled to overshoots of the future interception ...
  • Muñiz, F.; Zalama, E.; Gaudiano, P.; Coronado-Lóez, J. (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1995-02)
    Recently it has been introduced a neural controller for a mobile robot that learns both forward and inverse odometry of a differential-drive robot through an unsupervised learning-by-doing cycle. This article introduces ...
  • Cohen, Michael A.; Grossberg, Stephen; Pribe, Christopher (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1993-11)
    1) A large body of behavioral data conceming animal and human gaits and gait transitions is simulated as emergent properties of a central pattern generator (CPG) model. The CPG model incorporates neurons obeying Hodgkin-Huxley ...
  • Grossberg, Stephen; Pribe, Christopher; Cohen, Michael A. (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1994-07)
    How do humans and other animals accomplish coordinated movements? How are novel combinations of limb joints rapidly assembled into new behavioral units that rnove together in in-phase or anti-phase movement patterns during ...
  • Pribe, Christopher A.; Grossberg, Stephen; Cohen, Michael A. (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1994-07)
    Behavioral data concerning animal and human gaits and gait transitions are simulated as emergent properties of a central pattern generator (CPG) model. The CPG model is a version of the Ellias-Grossberg oscillator. Its ...
  • Cohen, Michael A.; Grossberg, Stephen; Pribe, Christopher (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1994-05)
    How do humans and other animals accomplish coordinated movements? How are novel combinations of limb joints rapidly assembled into new behavioral units that move together in in-phase or anti-phase movement patterns during ...
  • Kelly, Frank; Grossberg, Stephen (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1998-07)
    This article develops the FACADE theory of three-dimensional (3-D) vision to simulate data concerning how two-dimensional (2-D) pictures give rise to 3-D percepts of occluded and occluding surfaces. The theory suggests how ...
  • Grossberg, Stephen; Seidman, Don (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 2003-03)
    What brain mechanisms underlie autism and how do they give rise to autistic behavioral symptoms? This article describes a neural model, called the iSTART model, which proposes how cognitive, emotional, timing, and motor ...
  • Grossberg, Stephen; Kelly, Frank (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1998-05)
    How docs the visual cortex combine information from both eyes to generate perceptual representations of object surfaces? Important clues about this process may be derived from data about the perceived brightnesses of surface ...
  • Rhodes, Bradley; Bullock, Daniel (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 2002-06)
    Fixed sequences performed from memory play a key role in human cultural behavior, especially in music and in rapid communication through speaking, handwriting, and typing. Upon first performance, fixed sequences are often ...
  • Chey, Jonathan; Grossberg, Stephen; Mingolla, Ennio (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1995-11)
    A neural network model of visual motion perception and speed discrimination is developed to simulate data concerning the conditions under which components of moving stimuli cohere or not into a global direction of motion, ...
  • Grossberg, Stephen; Mingolla, Ennio; Viswanathan, Lavanya (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 2000-02)
    A neural model is developed of how motion integration and segmentation processes, both within and across apertures, compute global motion percepts. Figure-ground properties, such as occlusion, influence which motion signals ...
  • Grossberg, Stephen; Mingolla, Ennio (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1992-05)
    A neural network model of global motion segmentation by visual cortex is described. Called the Motion Boundary Contour System (BCS), the model clarifies how ambiguous local movements on a complex moving shape are actively ...
  • Grossman, Stephen (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1993-01)
  • Chey, Jonathan; Grossberg, Stephen; Mingolla, Ennio (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1994-10)
    A neural network model of visual motion perception and speed discrimination is presented. The model shows how a distributed population code of speed tuning, that realizes a size-speed correlation, can be derived from the ...
  • Boardman, Ian; Grossberg, Stephen; Myers, Christopher; Cohen, Michael (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1998-06)
    How does the brain extract invariant properties of variable-rate speech? A neural model, called PHONET, is developed to explain aspects of this process and, along the way, data about perceptual context effects. For example, ...
  • Boardman, Ian; Grossberg, Stephen; Cohen, Michael (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1994-12)
    The perception of CV syllables exhibits a trading relationship between voice onset time (VOT) of a consonant and duration of a vowel. Percepts of [ba] and [wa] can, for example, depend on the durations of the consonant and ...

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