Chapter 1
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Chapter 1 . Perception. Perception. Obtaining information by looking, listening, touching, & other forms of observation. To achieve locomotion (moving), you need perception. Looking: spatial orientation, spatial updating

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Chapter 1

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Chapter 1

Chapter 1

Perception


Perception

Perception

  • Obtaining information by looking, listening, touching, & other forms of observation.

  • To achieve locomotion (moving), you need perception.

  • Looking: spatial orientation, spatial updating

  • Listening: objects can be identified by the sounds they make, the sounds they reflect, & the sounds produced from their interaction with objects such as a long cane.

  • Touching:

    • Cutaneous sense: feelings of pressure, vibration, temperature, pain, etc.

    • Proprioception: detecting relative positions and movements of parts of the body.


Perception cont

Perception cont.

  • Pedestrian safety depends on proficiently adjusting your movements based on your perception of the environment.

  • Perception & knowledge are interrelated:

    • Procedural knowledge: Knowing how and when to do things (different cane skills).

    • Episodic knowledge: knowing an area (increased speed w/familiarity, knowledge of environmental hazards and their location.)

    • Conceptual knowledge: knowledge of general patterns (layout and traffic patterns of typical intersections).

    • Successful O&M depends on good object-to-object relationships and self-to-object relationships.


Perception cont1

Perception cont.

  • Perceptual demands on nonvisual street crossings have increased dramatically over the last few years (curbs to curb cuts, diesel to electric, volume of traffic, increased volume of traffic, etc.)


Chapter 2

Chapter 2

  • Establishing and Maintaining Orientation for Mobility


Spatial orientation

Spatial Orientation

  • 4 fundamental aspects:

    • Information gathering

    • Use of strategies for following simple routes

    • Use of cognitive maps

    • Problem solving skills


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