Other measures



Impedance cardiography

This module includes programs for ensemble averaging with statistical autoediting of outlier beats, drag-and-drop editing of B-, Z-, and X-points, and the extraction of preejection period (PEP), left ventricular ejection time (LVET), stroke volume, cardiac output, Heather index, etc.

Respiration

This module allows editing of raw respiratory signals, automatic inspiration/expiration start/end detection, drag-and-drop editing of breath onset/offset points, computation of respiratory rate, tidal volume, minute ventilation, fractional inspiratory ratio, inspiratory and expiratory times and pauses, inspiratory flow rate, tidal volume instability and respiratory rate instability.

Electromyography

This module allows automatic filtering, rectification, and smoothing of EMG signals and extraction of EMG amplitude.

Pulse plethysmography

This module allows ECG-based and stand-alone pulse analysis, computation of pulse amplitude, pulse rate, and (if ECG-based) pulse transit time.

Continuous blood pressure

This module creates a batch-compliant interface to integrate the Finapres Medical Systems BeatScope software in the ANSLAB environment (a Beatscope license is required). Raw data can be edited before starting the Beatscope analysis, and extracted parameters can be browsed, edited and exported using the ANSLAB user interface. Extracted parameters are systolic blood pressure, diastolic blood pressure, true mean blood pressure, heart rate, total peripheral resistance, left ventricular ejection time, cardiac oxygen supply (demand ratio), cardiac output, stroke volume, aortic characteristic impedance, total arterial compliance, etc.

Accelerometry

This module allows the editing, decomposition and quantification of angle/posture (low frequency) and motion (high frequency) components of an accelerometer signal. For ambulatory monitoring data files, an elaborated activity analysis is available to allow for the identification and stratification of activity levels across the day as a basis for the analysis of other physiological signals (activity stratification as control of activity confounds).

Capnography analysis

This module includes automatic end-tidal pCO2 plateau identification, visual plateau marking and editing, outlier identification and the extraction of pCO2 and respiratory rate.

Temperature analysis

This module allows filtering and visual editing of artifacts of a (skin) temperature signal and its mathematical derivative and extraction of temperature and temperature slope values.

Respiration calibration

This module extracts calibration coefficients for respiratory signals based on fixed-volume bag or spirometric comparison data. Combined with respiratory pattern analysis these allow calibrated analysis of respiratory pattern (e.g., tidal volume in units of liters).

Crossspectral analysis

This module includes programs for the calculation, display and editing of the crossspectrum, transfer function, spectral coherence and crossspectral phase angle at specified frequencies of any two signals analyzed and saved with ANSLAB. This allows, e.g., the computation for baroreflex sensisitivy from ECG and blood pressure signals, or computation of sufficient cardio-respiratory coherence (>0.5) at respiratory frequencies to assure reliable interpretation of high-frequency HRV as truly respiratory driven and thus reliable index of vagal activity.

Vocal response analysis

This module extracts response latency (vocal reaction time) and response magnitude from recorded sound signals. A response plot successively displays each vocal resonse and allows identification of inadequate responses and drag-and-drop editing of baseline level, onset latency, and response level. Sound can be played back for verification during scoring or written to WAV-files for playback in sound editing programs. This tool allows, e.g., exact and reliable scoring of computerized Stroop color naming tests.

advancedanalyses.txt · Last modified: 2013/01/28 13:41 by frank
You are here: homeadvancedanalyses