Abstract: A physiological information processing apparatus includes a processor and a memory storing computer-readable instructions. When the computer-readable instructions are executed by the processor, the apparatus obtains physiological information data indicative of physiological information of a subject, obtains RR interval data including a plurality of RR intervals based on the physiological information data, identifies an RR interval indicative of arrhythmia, and displays the RR interval data as plotted points on a two-dimensional coordinate system having one axis representing an n-th RR interval and another axis representing an (n+1)-th RR interval. The RR interval data is displayed on the two-dimensional coordinate system such that a visual mode of a plurality of first plotted points associated with the RR interval indicative of arrhythmia and a visual mode of plotted points of the RR interval data other than the plurality of first plotted points are different from each other.

Abstract: An atrial fibrillation detecting device includes a processor and a memory that stores a computer-readable command. When the computer-readable command is executed by the processor, the atrial fibrillation detecting device is configured to acquire pulse data representing a plurality of pulses, calculate a pulse rate based on the pulse data, calculate respective pulse amplitude indices of the plurality of pluses based on the pulse data, calculate an amplitude dispersion of the pulse amplitude indices based on the calculated pulse amplitude indices, calculate respective pulse interval indices of the plurality of pluses based on the pulse data, calculate an interval dispersion of the pulse interval indices based on the calculated pulse interval indices, and determine whether the pulse data is atrial fibrillation, based on the calculated pulse rate, the calculated amplitude dispersion, and the calculated interval dispersion.

Abstract: An automatic measurement point correction method includes acquiring vital signs information waveform data indicating a vital signs information waveform having a plurality of waveforms which periodically appear on a time axis, determining a plurality of measurement points for measuring a predetermined measurement item of each waveform included in the vital signs information waveform, causing the vital signs information waveform and measurement point displayers to be displayed on a displaying section, correcting a first measurement point for measuring the predetermined measurement item of a first waveform of the plurality of waveforms, as a first correction, recording the corrected first measurement point as a reference measurement point, extracting a waveform which is analogous to the first waveform, from the plurality of waveforms, and automatically correcting a measurement point for measuring the predetermined measurement item of the extracted waveform, as a second correction.

Abstract: A physiological information processing apparatus includes a processor and a memory storing computer-readable instructions. When the computer-readable instructions are executed by the processor, the apparatus obtains physiological information data indicative of physiological information of a subject, obtains RR interval data including a plurality of RR intervals based on the physiological information data, identifies an RR interval indicative of arrhythmia, and displays the RR interval data as plotted points on a two-dimensional coordinate system having one axis representing an n-th RR interval and another axis representing an (n+1)-th RR interval. The RR interval data is displayed on the two-dimensional coordinate system such that a visual mode of a plurality of first plotted points associated with the RR interval indicative of arrhythmia and a visual mode of plotted points of the RR interval data other than the plurality of first plotted points are different from each other.

Abstract: An apparatus for testing perception is an apparatus that includes a stimulation controller and a notification controller. The stimulation controller is configured to control a stimulation application member that applies electrical stimulation to a subject. And the notification section is configured to notify the subject of an application of the electrical stimulation.

Abstract: An electrocardiogram analyzing method includes: (a) acquiring electrocardiogram data representing an electrocardiogram waveform having heart beat waveforms; (b) acquiring RR interval data from the electrocardiogram data; (c) detecting at least one premature ventricular contraction causing a compensatory pause; (d) extracting, from the RR interval data, RR intervals during the detected premature ventricular contraction and before and after the detected premature ventricular contraction; (e) extracting a first RR interval group and a second interval group respectively from the RR intervals, wherein the first interval group includes the intervals before the premature ventricular contraction, and the second interval group includes the intervals after the premature ventricular contraction; (f) performing a predetermined frequency analysis on the first RR interval group; (g) performing the frequency analysis on the second RR interval group; and (h) comparing a first analysis result obtained by the step (f) and a se

Abstract: An atrial fibrillation detecting device includes a processor and a memory that stores a computer-readable command. When the computer-readable command is executed by the processor, the atrial fibrillation detecting device is configured to acquire pulse data representing a plurality of pulses, calculate a pulse rate based on the pulse data, calculate respective pulse amplitude indices of the plurality of pluses based on the pulse data, calculate an amplitude dispersion of the pulse amplitude indices based on the calculated pulse amplitude indices, calculate respective pulse interval indices of the plurality of pluses based on the pulse data, calculate an interval dispersion of the pulse interval indices based on the calculated pulse interval indices, and determine whether the pulse data is atrial fibrillation, based on the calculated pulse rate, the calculated amplitude dispersion, and the calculated interval dispersion.

Abstract: A biological information displaying apparatus includes: a measuring section which is configured to measure a biological information waveform containing a specific measurement value; a calculating section which is configured to calculate the specific measurement value based on the biological information waveform that is measured by the measuring section in a designated unit time; a determining section which is configured to determine a level of a reliability of the specific measurement value that is calculated by the calculating section, based on the biological information waveform that is measured by the measuring section in the unit time; and a displaying section which is configured to display a trend graph of the specific measurement values while the specific measurement values are distinct according to the level of the reliability that is determined by the determining section.

Abstract: A waveform analysis method for analyzing vital sign waveform data by using respiratory waveform data which are synchronized with the vital sign waveform data includes acquiring the vital sign waveform data and the respiratory waveform data, determining an expiratory phase and an inspiratory phase from the respiratory waveform data, extracting given waveform data corresponding to the expiratory phase, and given waveform data corresponding to the inspiratory phase from the vital sign waveform data, performing a first waveform analysis M which a given waveform analysis is applied to the extracted given waveform data corresponding to the expiratory phase, and performing a second waveform analyzing in which the given waveform analysis is applied to the extracted given waveform data corresponding to the inspiratory phase.

Abstract: A vital signs information measuring apparatus includes a calculating section which calculates a baroreflex index, a sympathetic nerve index, a heart rate, an estimated cardiac output, and an alternative index of blood pressure by using at least one of an electrocardiographic signal of a living body, and a pulse wave of the living body and a displaying section that displays changes of the baroreflex index, sympathetic nerve index, heart rate, estimated cardiac output, and alternative index of blood pressure that are calculated by the calculating section.

Abstract: An automatic measurement point correction method includes acquiring vital signs information waveform data indicating a vital signs information waveform having a plurality of waveforms which periodically appear on a time axis, determining a plurality of measurement points for measuring a predetermined measurement item of each waveform included in the vital signs information waveform, causing the vital signs informal n waveform and measurement point displayers to be displayed on a displaying section, correcting a first measurement point for measuring the predetermined measurement item of a first waveform of the plurality of waveforms, as a first correction, recording the corrected first measurement point as a reference measurement point, extracting a waveform which is analogous to the first waveform, from the plurality of waveforms, and automatically correcting a measurement point for measuring the predetermined measurement item of the extracted waveform, as a second correction.

Abstract: A blood vessel diameter measuring apparatus includes an ultrasonic probe which emits an ultrasonic wave toward a blood vessel, receives an ultrasonic wave reflected from the blood vessel and outputs an ultrasonic signal based on the received ultrasonic wave, a detecting section which is attached to the ultrasonic probe and outputs information indicating a position of the ultrasonic probe and an attitude of the ultrasonic probe with respect to the blood vessel, a support fixture which supports the ultrasonic probe so as to enable the ultrasonic probe to perform at least one of operations, an image processing section which produces an ultrasonic image of the blood vessel by using the ultrasonic signal from the ultrasonic probe and the position/attitude information from the detecting section, and a measuring section which measures a blood vessel diameter of the blood vessel by using the produced ultrasonic image.

Abstract: A biological information displaying apparatus includes: a measuring section which is configured to measure a biological information waveform containing a specific measurement value; a calculating section which is configured to calculate the specific measurement value based on the biological information waveform that is measured by the measuring section in a designated unit time; a determining section which is configured to determine a level of a reliability of the specific measurement value that is calculated by the calculating section, based on the biological information waveform that is measured by the measuring section in the unit time; and a displaying section which is configured to display a trend graph of the specific measurement values while the specific measurement values are distinct according to the level of the reliability that is determined by the determining section.

Abstract: A TWA measuring electrocardiograph includes: a transformation coefficient storing section configured to store a transformation coefficient for deriving a Frank's vector electrocardiogram; an electrocardiograph controlling section configured to produce a scalar electrocardiogram from electrocardiographic signals of measurement electrodes adapted to be attached to a subject, and configured to derive the Frank's vector electrocardiogram from the scalar electrocardiogram by using the transformation coefficient; and a TWA measuring section configured to measure a presence of TWA based on the derived Frank's vector electrocardiogram.

Abstract: A TWA measuring apparatus includes: a T-wave feature quantity measuring section; a classifying section classifying T-wave feature quantities into groups of odd and even electrocardiogram waveforms; a reliability index calculating section calculating: first and second representative values and first and second dispersion values of the T-wave feature quantities in the odd and even group; a difference between the first and second representative values, to obtain a TWA feature quantity; and an adjustment value between the first representative value and the first dispersion value, and an adjustment value between the second representative value and the second dispersion value, to obtain a reliability index; and a reliability recognizing section recognizing: when the reliability index exceeds a threshold, that reliability of the TWA feature quantity is high; and when the reliability index does not exceed the threshold, that the reliability is low.

Abstract: A TWA measuring apparatus includes: a grouping section which is configured to group electrocardiogram waveforms of a subject in increments of a first beat number, to generate a plurality of first groups; a storage section which is configured to store the electrocardiogram waveforms; a testing section which is configured to test a statistical intergroup difference of measurement values of the electrocardiogram waveforms of the first groups; a heartbeat condition determining section which is configured to determine that a heartbeat condition is unstable, when a significant statistical difference exists between the first groups; and a TWA measuring section which is configured to measure variation in heartbeat by using the stored electrocardiogram waveforms, when it is determined that the heartbeat condition is unstable.

Abstract: A bio-information display device includes a calculator that calculates a bio-parameter value from a biosignal, a graph generator that generates a trend graph based on the bio-parameter value, a waveform generator that generates a signal waveform from the biosignal, a display that displays information, and a display controller that synchronizes the bio-parameter value of the trend graph with the signal waveform associated with the bio-parameter value and then sequentially displays the trend graph and the signal waveform on the display in time-series.

Abstract: A TWA measuring apparatus includes: an electrocardiograph controlling section which is configured to produce an electrocardiogram from electrocardiographic signals of a subject; and a TWA measuring section which is configured to select at least two waveforms that contribute to a measurement of TWA, from the electrocardiogram, and which is configured to measure a presence of TWA by using the selected at least two waveforms.

Abstract: A TWA measuring apparatus includes: a T-wave feature quantity measuring section; a classifying section classifying T-wave feature quantities into groups of odd and even electrocardiogram waveforms; a reliability index calculating section calculating: first and second representative values and first and second dispersion values of the T-wave feature quantities in the odd and even group; a difference between the first and second representative values, to obtain a TWA feature quantity; and an adjustment value between the first representative value and the first dispersion value, and an adjustment value between the second representative value and the second dispersion value, to obtain a reliability index; and a reliability recognizing section recognizing: when the reliability index exceeds a threshold, that reliability of the TWA feature quantity is high; and when the reliability index does not exceed the threshold, that the reliability is low.

Abstract: A TWA measuring apparatus includes: a grouping section which is configured to group electrocardiogram waveforms of a subject in increments of a first beat number, to generate a plurality of first groups; a storage section which is configured to store the electrocardiogram waveforms; a testing section which is configured to test a statistical intergroup difference of measurement values of the electrocardiogram waveforms of the first groups; a heartbeat condition determining section which is configured to determine that a heartbeat condition is unstable, when a significant statistical difference exists between the first groups; and a TWA measuring section which is configured to measure variation in heartbeat by using the stored electrocardiogram waveforms, when it is determined that the heartbeat condition is unstable.