Medical diagnostic apparatus utilizing line-of-sight detection

• US 5,311,879 A
• Filed: 12/18/1992
• Issued: 05/17/1994
• Est. Priority Date: 07/09/1992
• Status: Expired due to Fees

• Current Assignee: ATR Auditory and Visual Perception Research Laboratories, Fujii Mitsuru, Jiro Miyazawa, Naohiko Takahata, Norihito Nakano, Ryo Fukatsu, Shinji Murakami
• Original Assignee: ATR Auditory and Visual Perception Research Laboratories
• Inventors: Hongo, Hitoshi, Murakami, Shinji, Fujii, Mitsuru, Uomori, Kenya, Yamada, Mitsuho, Ueno, Keiichi, Yoshimatsu, Hiroshi, Fukatsu, Ryo, Miyazawa, Jiro, Takahata, Naohiko, Nakano, Norihito
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US07/995,651
• Time in Patent Office: 515 Days
• Field of Search: 128/745, 351/210, 351/211
• US Class Current: 600/558
• CPC Class Codes: A61B 3/113 for determining or recording eye movement
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/4088 Diagnosing of monitoring cognitive diseases, e.g. Alzheimer, prion diseases or dementia
• CPC Class Codes: A61B 5/6803 Head-worn items, e.g. helmets, masks, headphones or goggles
• CPC Class Codes: G16H 15/00 ICT specially adapted for medical reports, e.g. generation or transmission thereof
• CPC Class Codes: G16H 40/63 for local operation

Abstract

In a medical diagnostic apparatus utilizing line-of-sight detection, targets are successively presented from different angles to the subject by a target presenting apparatus, eye movement of the subject while the subject is gazing at the target is detected by an eye movement detecting portion, the head movement of the subject is detected by a head movement detecting portion, and in response to the detection outputs, the spatial movement of the line-of-sight, rotation velocity component and translational velocity component of the head movement as well as the velocity component of the eye movement are calculated by a calculating portion, and the results are output to an output portion.

Claims

1. A medical diagnostic apparatus utilizing line-of-sight detection for diagnosing a disease related to brain function by detecting the line-of-sight of a subject, comprising:

eye movement detecting means for detecting eye movement of said subject;

target presenting means for presenting a target to said subject;

calculating means responsive to a detection output from said eye movement detecting means while said subject is gazing at a target presented by said target presenting means for calculating spatial movement of the line-of-sight of said subject to determine whether or not the disease is related to brain function; and

output means for outputting the movement of the line-of-sight calculated by said calculating means and information indicating whether or not the disease is related to the brain function; and

head movement detecting means for detecting head movement of said subject,

wherein said calculating means include means responsive to a detection output from said head movement detecting means while said subject is gazing at the target and to the detection output from said eye movement detecting means for detecting spatial movement of the line-of-sight of said subject to output a result to said output means, and

said target presenting means includes means for presenting targets from different angles with respect to said subject.

2. A medical diagnostic apparatus utilizing line-of-sight detection for diagnosing a disease related to brain function by detecting the line-of-sight of a subject, comprising:

eye movement detecting means for detecting eye movement of said subject;

target presenting means for presenting a target to said subject;

calculating means responsive to a detection output from said eye movement detecting means while said subject is gazing at a target presented by said target presenting means for calculating spatial movement of the line-of-sight of said subject to determine whether or not the disease is related to brain function;

output means for outputting the movement of the line-of-sight calculated by said calculating means and information indicating whether or not the disease is related to the brain function; and

head movement detecting means for detecting head movement of said subject,

wherein said target presenting means include means for presenting targets from different angles with respect to said subject, and

said calculating means include means responsive to the detection output from said head movement detecting means for calculating a rotation velocity component of the head movement of said subject to output a result to said output means.

3. A medical diagnostic apparatus utilizing line-of-sight detection for diagnosing a disease related to brain function by detecting the line-of-sight of a subject, comprising:

eye movement detecting means for detecting eye movement of said subject;

target presenting means for presenting a target to said subject;

calculating means responsive to a detection output from said eye movement detecting means while said subject is gazing at a target presented by said target presenting means for calculating spatial movement of the line-of-sight of said subject to determine whether or not the disease is related to brain function;

output means for outputting the movement of the line-of-sight calculated by said calculating means and information indicating whether or not the disease is related to the brain function; and

head movement detecting means for detecting head movement of said subject,

wherein said target presenting means include means for presenting targets from different angles with respect to said subject, and

said calculating means include means responsive to the detection output from said head movement detecting means for calculating a translational velocity component of the head movement of said subject to output a result to said output means.

4. A medical diagnostic apparatus utilizing line-of-sight detection for diagnosing a disease related to brain function by detecting the line-of-sight of a subject, comprising:

eye movement detecting means for detecting eye movement of said subject;

target presenting means for presenting a target to said subject;

calculating means responsive to a detection output from said eye movement detecting means while said subject is gazing at a target presented by said target presenting means for calculating spatial movement of the line-of-sight of said subject to determine whether or not the disease is related to brain function; and

output means for outputting the movement of the line-of-sight calculated by said calculating means and information indicating whether or not the disease is related to the brain function,

wherein said target presenting means include means for presenting targets from different angles with respect to said subject,

said calculating means include means responsive to the detection output from said eye movement detecting means for calculating the velocity component of the eye movement of said subject to output a result to said output means, and

said calculating means include means for counting the number of the stepwise eye movements for comparing an anisotropy in velocity between left/right directions to output a result to said output means.