Four blind adults were observed to determine the extent of the natural movement of their centers of gravity in relation to arc height during the two-point touch technique for long cane travel. The Ss learned and practiced a modified technique using their center of gravity as much as possible. (Author)

The author discusses ways in which miniatures and schematic drawings can help blind persons deal with information provided by sonicguide. (CL)

The Night Vision Aid (NVA) was evaluated to determine its effectiveness as an orientation and mobility aid for legally blind persons with night blindness. On the average, the NVA did not significantly improve the Ss' mobility at night; the majority of them preferred the Wide Angle Mobility Light. (CL)

Use of the Sonicguide, a binaural sensory aid, by a quadraplegic, totally blind 18-year-old student is described. The rationale for training, device adaptations, and the eventual use of the device as a primary mobility aid in areas familiar to the student are explained. (Author/MC)

The article describes four of the most widely accepted and utilized Electronic Travel Aids for blind persons--the Lindsay Russell Pathsounder, the Mowat Sensor, the Sonicguide, and the C-5 Laser Cane. Current uses and applications of the four aids for specific populations of visually impaired persons are discussed. (Author)

The use of the Laser Cane with four blind students attending public school is discussed with emphasis on modifications in technique needed to integrate the cane's use into each student's travel system. (Author)

This study measured the light distribution patterns and the decay in light output of three mobility lights that visually impaired persons can use for night travel: the Wide-Angle Mobility Lights, the Streamlight, and the Mag-Lite. Implications are discussed in terms of selecting the most efficient visual aid for particular usage. (Author/JDD)

A pilot study involving 16 visually handicapped children (6-14 years old) suggested that a new high-resolution acoustic sensory aid may be useful as a training aid for developing spatial perception. Tasks in spatial location, spatial orientation, and spatial transfer were executed using the spatial sensor in a classroom program. (Author/CL)

THESE PROCEEDINGS WERE PREPARED FROM THE MOBILITY RESEARCH CONFERENCE HELD IN ROTTERDAM, THE NETHERLANDS, AUGUST 3-7, 1964. PROGRESS REPORTS ARE GIVEN ON THE FOLLOWING--(1) ULTRASONIC MOBILITY AID, (2) ULTRASONIC GUIDANCE SYSTEM, (3) ELEKTROFTALM MOBILITY AID, (4) PASSIVE ENVIRONMENT SENSORS, (5) AMBIENT-LIGHT OBJECT DETECTOR, (6) TRAVEL PATH…

Discussed are some potential applications of the pathsounder, laser cane, and sonicguide as aids to concept development in blind children. (Author/IM)

Two questionnaires (169 items for the 94 users of the aid, 88 for the 21 trainers) were employed to evaluate the ultrasonic binaural sensory aid for the blind, a mobility and orientation device. (Author)