Biological optical measurement instrument
First Claim
1. A biological optical measurement instrument, comprising:
- a light irradiation means for irradiating the head of a subject with light;
a light detection means for detecting transmitted light that is emitted from the light irradiation means, and that passes through a point of measurement in the head of the subject;
an input unit where the type of cerebral function to be measured is inputted;
a calculator that sets different analysis parameters according to the type of cerebral function inputted through the input unit, and that calculates an oxyhemoglobin concentration change signal and a deoxyhemoglobin concentration change signal at the point of measurement, on the basis of a signal detected by the light detection means, and on the basis of the analysis parameters; and
a display unit that displays the result of calculation by the calculator,wherein the analysis parameters include a time parameter based on which a time period of absence of cerebral activity to be measured is set, andwherein, when the cerebral function to be measured is gustatory function, the time period of absence of cerebral activity to be measured is set based on time elapsed after a start of stimulation.
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Accused Products
Abstract
Appropriate measurement and analysis parameters are set according to cerebral function to be measured. To measure gustatory function, a time period of absence of cerebral activity to be measured is set so as not to contain a period of 60 seconds after start of stimulation, an activity period for analysis for an oxyhemoglobin concentration change signal is set so as to contain a period between an instant after a lapse of 16 seconds, and an instant after a lapse of 25 seconds, after the start of the stimulation, and an activity period for analysis for a deoxyhemoglobin concentration change signal is set so as to contain a period between an instant after a lapse of 28 seconds and an instant after a lapse of 37 seconds after the start of the stimulation. Moreover, a time interval between stimulations is set to 80 seconds or more.
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Citations
16 Claims
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1. A biological optical measurement instrument, comprising:
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a light irradiation means for irradiating the head of a subject with light; a light detection means for detecting transmitted light that is emitted from the light irradiation means, and that passes through a point of measurement in the head of the subject; an input unit where the type of cerebral function to be measured is inputted; a calculator that sets different analysis parameters according to the type of cerebral function inputted through the input unit, and that calculates an oxyhemoglobin concentration change signal and a deoxyhemoglobin concentration change signal at the point of measurement, on the basis of a signal detected by the light detection means, and on the basis of the analysis parameters; and a display unit that displays the result of calculation by the calculator, wherein the analysis parameters include a time parameter based on which a time period of absence of cerebral activity to be measured is set, and wherein, when the cerebral function to be measured is gustatory function, the time period of absence of cerebral activity to be measured is set based on time elapsed after a start of stimulation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A biological optical measurement instrument, comprising:
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a light irradiation means for irradiating a subject with light; a light detection means for detecting transmitted light that is emitted from the light irradiation means, and that passes through a point of measurement in the subject; an input unit where the type of physiological change to be measured is inputted; a calculator that sets different analysis parameters according to the type of physiological change inputted through the input unit, and that calculates an oxyhemoglobin concentration change signal and a deoxyhemoglobin concentration change signal at the point of measurement, on the basis of a signal detected by the light detection means, and on the basis of the analysis parameters; and a display unit that displays the result of calculation by the calculator, wherein the analysis parameters include a time parameter based on which a time period of absence of physiological change to be measured is set, and wherein when the physiological change to be measured is salivary gland function, the time period of absence of physiological change to be measured is set based on time elapsed after a start of stimulation. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification