SYSTEMS AND METHODS FOR THE MEASUREMENT OF VESTIBULO-OCULAR REFLEX TO IMPROVE HUMAN PERFORMANCE IN AN OCCUPATIONAL ENVIRONMENT
First Claim
1. A system comprising a portable ocular reflex measuring device wherein the portable device comprises:
- an eye orientation sensor wherein;
the eye orientation sensor comprises a module selected from the group consisting of an image detector, a magnetic field detector, and an electrical potential detector; and
the eye orientation sensor senses vertical movement and horizontal movement of at least one eye;
a head orientation sensor wherein;
the head orientation sensor is attachable to a person'"'"'s head;
the head orientation sensor does not use an external pulsed magnetic field;
the head orientation sensor senses pitch and yaw of the person'"'"'s head wherein pitch represents a rotation about a first axis representing up and down movement of the person'"'"'s face when the rear of the person'"'"'s head moves in the opposite direction and yaw represents horizontal movement of the face when looked at from the front about a second axis substantially aligned with the spine and perpendicular to the first axis; and
the head orientation sensor senses pitch and yaw in a range of frequencies that comprises at least one frequency greater than 0.01 Hertz and less than 15 Hertz;
the head orientation sensor comprises a micro-electro-mechanical system integrated circuit wherein the micro-electro-mechanical system comprises a module selected from the group consisting of an accelerometer, a magnetometer, and a gyroscope; and
an electronic circuit wherein;
the electronic circuit comprises a power supply, a communications unit, logic circuitry, a central processing unit, a memory unit; and
sensor data pre-processing circuitry;
the power supply comprises a battery;
the electronic circuit is responsive to horizontal and vertical eye movement information received from the eye orientation sensor;
the electronic circuit is responsive to pitch and yaw information received from the head orientation sensor;
the electronic circuit uses a Fourier transform to generate a vertical gain signal and a vertical phase signal in response to the vertical eye movement information and the pitch information; and
the electronic circuit uses a Fourier transform to generate a horizontal gain signal and a horizontal phase signal in response to the horizontal eye movement information and the yaw information.
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Accused Products
Abstract
A portable eye reflex measuring device for use in an ambulatory occupational environment is disclosed. The eye reflex measuring device compares data from an eye movement detector with data from a head movement detector at a frequency or frequencies in the range of 0.01 Hertz to 15 Hertz to determine eye response to head movement. The gain and phase of the eye response is calculated using a Fourier transform. The device includes a central processing unit for receiving the eye movement data, for receiving the head movement data, and for calculating the Fourier transform. Typical human physiological conditions that can be measured can include vestibulo-ocular reflex, dynamic visual acuity, dynamic visual stability, or retinal image stability.
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Citations
20 Claims
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1. A system comprising a portable ocular reflex measuring device wherein the portable device comprises:
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an eye orientation sensor wherein; the eye orientation sensor comprises a module selected from the group consisting of an image detector, a magnetic field detector, and an electrical potential detector; and the eye orientation sensor senses vertical movement and horizontal movement of at least one eye; a head orientation sensor wherein; the head orientation sensor is attachable to a person'"'"'s head; the head orientation sensor does not use an external pulsed magnetic field; the head orientation sensor senses pitch and yaw of the person'"'"'s head wherein pitch represents a rotation about a first axis representing up and down movement of the person'"'"'s face when the rear of the person'"'"'s head moves in the opposite direction and yaw represents horizontal movement of the face when looked at from the front about a second axis substantially aligned with the spine and perpendicular to the first axis; and the head orientation sensor senses pitch and yaw in a range of frequencies that comprises at least one frequency greater than 0.01 Hertz and less than 15 Hertz; the head orientation sensor comprises a micro-electro-mechanical system integrated circuit wherein the micro-electro-mechanical system comprises a module selected from the group consisting of an accelerometer, a magnetometer, and a gyroscope; and an electronic circuit wherein; the electronic circuit comprises a power supply, a communications unit, logic circuitry, a central processing unit, a memory unit; and
sensor data pre-processing circuitry;the power supply comprises a battery; the electronic circuit is responsive to horizontal and vertical eye movement information received from the eye orientation sensor; the electronic circuit is responsive to pitch and yaw information received from the head orientation sensor; the electronic circuit uses a Fourier transform to generate a vertical gain signal and a vertical phase signal in response to the vertical eye movement information and the pitch information; and the electronic circuit uses a Fourier transform to generate a horizontal gain signal and a horizontal phase signal in response to the horizontal eye movement information and the yaw information. - View Dependent Claims (2, 3)
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4. A portable eye response measuring system comprising:
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an eye orientation sensor wherein the eye orientation sensor senses movement of at least one eye wherein the eye movement is selected from the group consisting of vertical eye movement and horizontal eye movement; a head orientation sensor wherein; the head orientation sensor is attachable to a person'"'"'s head; the head orientation sensor senses movement of the person'"'"'s head wherein the head movement is selected from the group consisting of pitch movement and yaw movement; and the head orientation sensor senses movement in a range of frequencies that comprises at least one frequency greater than 0.01 Hertz and less than 15 Hertz; the head orientation sensor comprises a micro-electro-mechanical system integrated circuit wherein the micro-electro-mechanical system comprises a device selected from the group consisting of an accelerometer, a magnetometer, and a gyroscope; and an electronic circuit wherein; the electronic circuit comprises logic circuitry, a central processing unit, a memory unit; and
sensor data pre-processing circuitry;the electronic circuit is responsive to the movement information received from the eye orientation sensor; the electronic circuit is responsive to the movement information received from the head orientation sensor; and the electronic circuit uses a Fourier transform to generate a signal selected from the group consisting of a phase signal and a gain signal in response to eye movement information received from the eye orientation sensor and head movement information received from the head orientation sensor. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An eye reflex detection method, the method comprising the steps of:
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electronically sensing changes in eye orientation wherein; the eye orientation changes are sensed by a portable device; and the eye orientation changes are selected from the group consisting of vertical eye movement and horizontal eye movement; electronically sensing changes in head orientation wherein; the head orientation changes are sensed by a portable device; the head orientation changes are selected from the group consisting of pitch movement and yaw movement; the head orientation changes are sensed in at least one frequency that is between 0.01 Hertz and 15 Hertz; and head orientation sensing comprises the use of a device selected from the group consisting of an accelerometer, a magnetometer, and a gyroscope; comparing the eye orientation and head orientation information using an electronic circuit wherein; the electronic circuit comprises logic circuitry, a central processing unit, a memory unit; and
sensor data pre-processing circuitry;the electronic circuit uses a Fourier transform to generate a signal selected from the group consisting of a phase signal and a gain signal in response to the eye orientation changes and the head orientation changes. - View Dependent Claims (17, 18, 19, 20)
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Specification