Time-Frequency Linearization of Reactive Cortical Responses for the Early Detection of Balance Losses

Pseudocode 1

Pseudocode of logic network classifier routine and system calibration.

Routine: Logic Network Classification

Inputs:

MSMA; imSMA; //MSMA: Vector of Nc values from cortical group “Supplementary Motor Area”

        //imSMA: values from cortical group SMA @ ith MT contraction

MM1; imM1;  //MM1: Vector of Nc values from cortical group “Motor Area”

        //imM1: values from cortical group M1 @ ith MT contraction

MS1; imS1;   //MSMA: Vector of Nc values from cortical group “Sensory-motor area”

        //imSMA: values from cortical group S1 @ ith MT contraction

MPPC; imPPC; //MM1: Vector of Nc values from cortical group “Parietal area”

        //imM1: values from cortical group PPC @ ith MT contraction

Outputs:

Gen_Flag; //Generalization Flag. It identifies a general cortical activity increment

Lat_Flag; //Lateralization Flag. It identifies a NOT lateralized cortical involvement

Alarm_on_BoI (); //The function is used to activate a warning flag on the specific evaluated BoI

    / Body Program LogicNetwork_Classifier  /

  1. [Class] LogicNetwork_Classifier (imSMA, imM1, imS1, imPPC){

  2.  CG_Sum = [imSMA>ThrSMA imM1>ThrM1 imS1>Thrs1 imPPC>ThrPPC]/4;

  3.  if (CG_Sum>0.5) {

  4.    Gen_Flag=1;

  5.    Lat_flag=lateral_check ();

  6.    if (Lat_flag == 1) {

  7.      → call Alarm_on_BoI ();

  8.    }

  9.  }

  10.  calibration (imSMA, imM1, imS1, imPPC); //refresh calibration values

  11. }

    /Example Calibration Step /

  12. [ThrSMA, ThrM1, ThrS1, ThrPPC] calibration(imSMA, imM1, imS1, imPPC) {

  13. //In the first calibration section, the system embeds the extraction of the 95^th

   percentile‑based thresholds for every cortical group.

   ThrsMA = prctile (MSMA, 95); ; ThrPPC = prctile (MPPC, 95);

  14. //In the second one, the vector is automatically updated with the new “im” value, preparing the system for the next contraction.

  15. MSMA(0) = []; MSMA=[MSMA imSMA]; ; MPPC(0)=[]; MPPC=[MPPC imPPC]

  16. }