Sökning: "biological motion"

Visar resultat 1 - 5 av 118 avhandlingar innehållade orden biological motion.

  1. 1. Motion Vision Processing in Fly Lobula Plate Tangential Cells

    Författare :Yu-Jen Lee; Karin Nordström; Holger Kraap; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hoverflies; EMD; higher order motion; octopamine; cSIFE; figure-ground discrimination; motion vision; lobula plate tangential cells;

    Sammanfattning : Flies are highly visually guided animals. In this thesis, I have used hoverflies as a model for studying motion vision. Flies process motion vision in three visual ganglia: the lamina, the medulla, and the lobula complex. In the posterior part of lobula complex, there are around 60 lobula plate tangential cells (LPTCs). LÄS MER

  2. 2. Nanofluidics as a tool for parallelized single nanoparticle characterization: Fluorescence single nanoparticle catalysis and size determination through 1D Brownian motion

    Författare :Sune Levin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; dark field microscopy; single nanoparticle catalysis; heterogenous catalysis; particle tracking; Brownian motion; fluorescence microscopy; nanofluidics;

    Sammanfattning : Nanoparticles exist widely in nature and are objects of study in many scientific disciplines due to their high performance in a wide range of applications. With modern techniques that facilitate creating and shaping of nanoparticles into ever more complex shapes and compositions, characterization of particle properties is essential. LÄS MER

  3. 3. Mind in Action : Action Representation and the Perception of Biological Motion

    Författare :Paul Hemeren; Högskolan i Skövde; []
    Nyckelord :HUMANIORA; HUMANITIES; action; perception; concept; Cognition; categorization; embodiment; prototype; biological motion; semantics; language; configural processing; basic level; graded structure; typicality; Civics; Samhällsvetenskap; Humanities and Social sciences; Humaniora-samhällsvetenskap; perception; action; concept; Cognition; categorization; embodiment; prototype; biological motion; semantics; language; configural processing; basic level; graded structure; typicality;

    Sammanfattning : The ability to understand and communicate about the actions of others is a fundamental aspect of our daily activity. How can we talk about what others are doing? What qualities do different actions have such that they cause us to see them as being different or similar? What is the connection between what we see and the development of concepts and words or expressions for the things that we see? To what extent can two different people see and talk about the same things? Is there a common basis for our perception, and is there then a common basis for the concepts we form and the way in which the concepts become lexicalized in language? The broad purpose of this thesis is to relate aspects of perception, categorization and language to action recognition and conceptualization. LÄS MER

  4. 4. Lip-motion and speech biometrics in person recognition

    Författare :Maycel Isaac Faraj; Högskolan i Halmstad; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Audio-visual recognition; biometrics; Biometric recognition; Speaker verification; Speaker authentication; Person identification; Lip movements; Motion; Structure tensor; Orientation; Optical flow; Hidden Markov Model; Gaussian Markov Model; Lip-motion; Image analysis; Bildanalys;

    Sammanfattning : Biometric identification techniques are frequently used to improve security, e.g. in financial transactions, computer networks and secure critical locations. The purpose of biometric authentication systems is to verify an individual by her biological characteristics including those generating characterisitic behaviour. LÄS MER

  5. 5. Neural correlates of diverse navigational strategies

    Författare :Marcel Sayre; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; central complex; connectome; path integration; bees; ants; neuroethology; neuroscience;

    Sammanfattning : Insects have evolved diverse and remarkable strategies for navigating in various ecologies all over the world. In particular, central place foragers, such as bees and ants, have become renowned for their fascinating navigational capabilities. At the heart of insect navigation lies a brain area known as the central complex (CX). LÄS MER