Model {
  Name			  "osa"
  Version		  2.09
  SimParamPage		  WorkspaceI/O
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  InvariantConstants	  off
  WideVectorLines	  off
  ShowLineWidths	  off
  PaperOrientation	  landscape
  PaperType		  usletter
  PaperUnits		  inches
  StartTime		  "0.0"
  StopTime		  "600"
  Solver		  ode4
  RelTol		  "1e-3"
  AbsTol		  "1e-3"
  Refine		  "1"
  MaxStep		  "0.05"
  InitialStep		  "auto"
  FixedStep		  "0.05"
  MaxOrder		  5
  OutputOption		  RefineOutputTimes
  OutputTimes		  "[]"
  LoadExternalInput	  off
  ExternalInput		  "[t, u]"
  SaveTime		  on
  TimeSaveName		  "tout"
  SaveState		  off
  StateSaveName		  "xout"
  SaveOutput		  off
  OutputSaveName	  "yout"
  LoadInitialState	  off
  InitialState		  "xInitial"
  SaveFinalState	  off
  FinalStateName	  "xFinal"
  LimitMaxRows		  off
  MaxRows		  "1000"
  Decimation		  "10"
  AlgebraicLoopMsg	  warning
  MinStepSizeMsg	  warning
  UnconnectedInputMsg	  warning
  UnconnectedOutputMsg	  warning
  UnconnectedLineMsg	  warning
  ConsistencyChecking	  off
  ZeroCross		  on
  SimulationMode	  normal
  RTWSystemTargetFile	  "grt.tlc"
  RTWInlineParameters	  off
  RTWRetainRTWFile	  off
  RTWTemplateMakefile	  "grt_vc.tmf"
  RTWMakeCommand	  "make_rtw"
  RTWGenerateCodeOnly	  off
  ExtModeMexFile	  "ext_comm"
  ExtModeBatchMode	  off
  BlockDefaults {
    Orientation		    right
    ForegroundColor	    black
    BackgroundColor	    white
    DropShadow		    off
    NamePlacement	    normal
    FontName		    "Helvetica"
    FontSize		    10
    FontWeight		    normal
    FontAngle		    normal
    ShowName		    on
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  AnnotationDefaults {
    HorizontalAlignment	    center
    VerticalAlignment	    middle
    ForegroundColor	    black
    BackgroundColor	    white
    DropShadow		    off
    FontName		    "Helvetica"
    FontSize		    10
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  LineDefaults {
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    FontSize		    9
    FontWeight		    normal
    FontAngle		    normal
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  System {
    Name		    "osa"
    Location		    [20, 64, 664, 693]
    Open		    on
    ScreenColor		    white
    Block {
      BlockType		      Constant
      Name		      "Arousal \nThreshold (L/min)"
      Position		      [150, 450, 170, 470]
      Value		      "25"
    }
    Block {
      BlockType		      Constant
      Name		      "Arousal Threshold (mm Hg)"
      Position		      [455, 575, 475, 595]
      Value		      "55"
    }
    Block {
      BlockType		      ToWorkspace
      Name		      "Arterial PCO2"
      Position		      [550, 435, 610, 465]
      VariableName	      "PaCO2"
      Buffer		      "inf"
      Decimation	      "1"
      SampleTime	      "0.5"
    }
    Block {
      BlockType		      Reference
      Name		      "Central\nChemoreflex"
      Ports		      [1, 1, 0, 0, 0]
      Position		      [385, 361, 430, 399]
      Orientation	      left
      SourceBlock	      "simulink_extras/Additional\nLinear/Transfer "
			      "Fcn\n(with initial outputs)"
      SourceType	      "Transfer Function with Initial Outputs"
      N			      "[1]"
      D			      "[100  1]"
      Y0		      "0"
      U0		      "0"
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    Block {
      BlockType		      Reference
      Name		      "Central\nChemoreflex1"
      Ports		      [1, 1, 0, 0, 0]
      Position		      [385, 286, 430, 324]
      Orientation	      left
      SourceBlock	      "simulink_extras/Additional\nLinear/Transfer "
			      "Fcn\n(with initial outputs)"
      SourceType	      "Transfer Function with Initial Outputs"
      N			      "[1]"
      D			      "[5  1]"
      Y0		      "0"
      U0		      "0"
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    Block {
      BlockType		      Gain
      Name		      "Central Gain"
      Position		      [320, 365, 350, 395]
      Orientation	      left
      Gain		      "2"
    }
    Block {
      BlockType		      TransportDelay
      Name		      "Circulatory\nDelay"
      Position		      [535, 310, 575, 340]
      Orientation	      left
      DelayTime		      "6"
      InitialInput	      "40.7172"
      BufferSize	      "5140"
    }
    Block {
      BlockType		      Gain
      Name		      "Gain"
      Position		      [175, 35, 205, 65]
      Gain		      "-7"
    }
    Block {
      BlockType		      SubSystem
      Name		      "Gas Exchange"
      Ports		      [1, 1, 0, 0, 0]
      Position		      [475, 174, 575, 236]
      ShowPortLabels	      on
      System {
	Name			"Gas Exchange"
	Location		[122, 245, 711, 673]
	Open			off
	ScreenColor		white
	Block {
	  BlockType		  Inport
	  Name			  "Ventilation"
	  Position		  [65, 240, 85, 260]
	  Port			  "1"
	  PortWidth		  "-1"
	  SampleTime		  "-1"
	}
	Block {
	  BlockType		  Gain
	  Name			  "1/60/VL"
	  Position		  [405, 286, 465, 314]
	  Gain			  "1/150"
	}
	Block {
	  BlockType		  Gain
	  Name			  "863*Q*Kco2*60"
	  Position		  [180, 166, 240, 194]
	  Orientation		  left
	  Gain			  "33.657"
	}
	Block {
	  BlockType		  Reference
	  Name			  "Body Tissues\nCompartment)"
	  Ports			  [1, 1, 0, 0, 0]
	  Position		  [270, 57, 330, 93]
	  SourceBlock		  "simulink_extras/Additional\nLinear/Transfer "
				  "Fcn\n(with initial outputs)"
	  SourceType		  "Transfer Function with Initial Outputs"
	  N			  "[1]"
	  D			  "[150   1]"
	  Y0			  "46.4"
	  U0			  "46.4"
	}
	Block {
	  BlockType		  Constant
	  Name			  "Dead Space\nVentilation"
	  Position		  [70, 310, 110, 330]
	  Value			  "2.25"
	}
	Block {
	  BlockType		  Integrator
	  Name			  "Integrator"
	  Ports			  [1, 1, 0, 0, 0]
	  Position		  [485, 285, 515, 315]
	  ExternalReset		  none
	  InitialConditionSource  internal
	  InitialCondition	  "40.7172"
	  LimitOutput		  off
	  UpperSaturationLimit	  "80"
	  LowerSaturationLimit	  "10"
	  ShowSaturationPort	  off
	  ShowStatePort		  off
	  AbsoluteTolerance	  "auto"
	}
	Block {
	  BlockType		  Constant
	  Name			  "MRco2/Kco2/Q"
	  Position		  [85, 79, 135, 101]
	  Value			  "5.4"
	}
	Block {
	  BlockType		  Product
	  Name			  "Product"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [255, 287, 285, 318]
	  Inputs		  "2"
	}
	Block {
	  BlockType		  Sum
	  Name			  "Sum"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [160, 277, 190, 308]
	  Inputs		  "+-"
	}
	Block {
	  BlockType		  Sum
	  Name			  "Sum1"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [330, 282, 360, 313]
	  Inputs		  "+-"
	}
	Block {
	  BlockType		  Sum
	  Name			  "Sum2"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [185, 57, 215, 88]
	  Inputs		  "++"
	}
	Block {
	  BlockType		  Sum
	  Name			  "Sum3"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [290, 162, 320, 193]
	  Orientation		  left
	  Inputs		  "+-"
	}
	Block {
	  BlockType		  Outport
	  Name			  "PaCO2"
	  Position		  [465, 225, 485, 245]
	  Orientation		  left
	  Port			  "1"
	  OutputWhenDisabled	  held
	  InitialOutput		  "0"
	}
	Line {
	  SrcBlock		  "Sum"
	  SrcPort		  1
	  DstBlock		  "Product"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "Dead Space\nVentilation"
	  SrcPort		  1
	  Points		  [15, 0; 0, -20]
	  DstBlock		  "Sum"
	  DstPort		  2
	}
	Line {
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	  DstBlock		  "Sum1"
	  DstPort		  2
	}
	Line {
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	  SrcPort		  1
	  DstBlock		  "1/60/VL"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "1/60/VL"
	  SrcPort		  1
	  DstBlock		  "Integrator"
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	}
	Line {
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	  SrcPort		  1
	  Points		  [0, 35]
	  DstBlock		  "Sum"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "Integrator"
	  SrcPort		  1
	  Points		  [10, 0]
	  Branch {
	    Points		    [10, 0; 0, 15]
	    Branch {
	      Points		      [0, 70; -320, 0; 0, -75]
	      DstBlock		      "Product"
	      DstPort		      2
	    }
	    Branch {
	      Points		      [15, 0; 0, -295; -400, 0; 0, 45]
	      DstBlock		      "Sum2"
	      DstPort		      1
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	  }
	  Branch {
	    Points		    [0, -35]
	    Branch {
	      Points		      [0, -30]
	      DstBlock		      "PaCO2"
	      DstPort		      1
	    }
	    Branch {
	      Points		      [-150, 0; 0, -80]
	      DstBlock		      "Sum3"
	      DstPort		      2
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	}
	Line {
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	  SrcPort		  1
	  DstBlock		  "Body Tissues\nCompartment)"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "MRco2/Kco2/Q"
	  SrcPort		  1
	  Points		  [30, 0]
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	  DstPort		  2
	}
	Line {
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	  Points		  [45, 0; 0, 95]
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	  DstPort		  1
	}
	Line {
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	  SrcPort		  1
	  DstBlock		  "863*Q*Kco2*60"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "863*Q*Kco2*60"
	  SrcPort		  1
	  Points		  [-30, 0; 0, 55; 150, 0; 0, 55]
	  DstBlock		  "Sum1"
	  DstPort		  1
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      }
    }
    Block {
      BlockType		      Integrator
      Name		      "Integrator\n(Reset to zero\nby arousal)"
      Ports		      [2, 1, 0, 0, 0]
      Position		      [120, 137, 150, 168]
      ExternalReset	      rising
      InitialConditionSource      internal
      InitialCondition	      "0"
      LimitOutput	      off
      UpperSaturationLimit      "inf"
      LowerSaturationLimit      "-inf"
      ShowSaturationPort      off
      ShowStatePort	      off
      AbsoluteTolerance	      "auto"
    }
    Block {
      BlockType		      Logic
      Name		      "Logical\nOperator"
      Ports		      [2, 1, 0, 0, 0]
      Position		      [75, 502, 105, 533]
      Orientation	      left
      Operator		      OR
      Inputs		      "2"
    }
    Block {
      BlockType		      Math
      Name		      "Math\nFunction"
      Ports		      [1, 1, 0, 0, 0]
      Position		      [125, 35, 155, 65]
      Operator		      reciprocal
    }
    Block {
      BlockType		      Scope
      Name		      "PaCO2"
      Ports		      [1, 0, 0, 0, 0]
      Position		      [565, 495, 595, 525]
      Floating		      off
      Location		      [687, 284, 1011, 503]
      Open		      on
      Grid		      on
      TickLabels	      on
      ZoomMode		      on
      TimeRange		      "auto"
      YMin		      "20"
      YMax		      "70"
      SaveToWorkspace	      off
      SaveName		      "ScopeData"
      LimitMaxRows	      off
      MaxRows		      "5000"
      Decimation	      "1"
      SampleInput	      off
      SampleTime	      "0"
    }
    Block {
      BlockType		      Gain
      Name		      "Peripheral\nGain"
      Position		      [315, 291, 340, 319]
      Orientation	      left
      Gain		      "0.5"
    }
    Block {
      BlockType		      RelationalOperator
      Name		      "Relational\nOperator"
      Position		      [445, 502, 475, 533]
      Orientation	      left
      Operator		      >
    }
    Block {
      BlockType		      RelationalOperator
      Name		      "Relational\nOperator1"
      Position		      [140, 387, 170, 418]
      Orientation	      left
      Operator		      >
    }
    Block {
      BlockType		      Constant
      Name		      "Resting\nPaCO2"
      Position		      [460, 397, 495, 423]
      Value		      "40.63"
    }
    Block {
      BlockType		      Constant
      Name		      "Resting Ventilation"
      Position		      [245, 435, 275, 455]
      Value		      "6.74"
    }
    Block {
      BlockType		      Scope
      Name		      "S"
      Ports		      [1, 0, 0, 0, 0]
      Position		      [310, 95, 340, 125]
      Floating		      off
      Location		      [689, 523, 1013, 762]
      Open		      on
      Grid		      on
      TickLabels	      on
      ZoomMode		      on
      TimeRange		      "auto"
      YMin		      "-10"
      YMax		      "5"
      SaveToWorkspace	      off
      SaveName		      "ScopeData"
      LimitMaxRows	      off
      MaxRows		      "5000"
      Decimation	      "1"
      SampleInput	      off
      SampleTime	      "0"
    }
    Block {
      BlockType		      Saturate
      Name		      "Saturation"
      Position		      [180, 110, 210, 140]
      UpperLimit	      "0"
      LowerLimit	      "-7"
    }
    Block {
      BlockType		      Saturate
      Name		      "Saturation1"
      Position		      [275, 190, 305, 220]
      UpperLimit	      "inf"
      LowerLimit	      "0"
    }
    Block {
      BlockType		      SubSystem
      Name		      "State-dependent\nUpper Airway"
      Ports		      [2, 1, 0, 0, 0]
      Position		      [350, 172, 410, 223]
      ShowPortLabels	      on
      System {
	Name			"State-dependent\nUpper Airway"
	Location		[190, 149, 713, 445]
	Open			off
	ScreenColor		white
	Block {
	  BlockType		  Inport
	  Name			  "State-related\nDrive"
	  Position		  [35, 58, 65, 72]
	  Port			  "1"
	  PortWidth		  "-1"
	  SampleTime		  "-1"
	}
	Block {
	  BlockType		  Inport
	  Name			  "Respiratory\nDrive"
	  Position		  [55, 213, 85, 227]
	  Port			  "2"
	  PortWidth		  "-1"
	  SampleTime		  "-1"
	}
	Block {
	  BlockType		  Constant
	  Name			  "Constant"
	  Position		  [105, 130, 125, 150]
	  Value			  "1"
	}
	Block {
	  BlockType		  Product
	  Name			  "Product"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [370, 162, 400, 193]
	  Inputs		  "2"
	}
	Block {
	  BlockType		  Saturate
	  Name			  "Saturation"
	  Position		  [260, 60, 290, 90]
	  UpperLimit		  "1"
	  LowerLimit		  "0"
	}
	Block {
	  BlockType		  Sum
	  Name			  "Sum"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [205, 57, 235, 88]
	  Inputs		  "++"
	}
	Block {
	  BlockType		  Reference
	  Name			  "Upper airway sensitivity \nto State"
	  Ports			  [1, 1, 0, 0, 0]
	  Position		  [120, 49, 170, 81]
	  SourceBlock		  "simulink/Linear/Slider\nGain"
	  SourceType		  "Slider Gain"
	  low			  "0"
	  gain			  "0.143"
	  high			  "0.143"
	}
	Block {
	  BlockType		  Outport
	  Name			  "Airflow"
	  Position		  [455, 143, 485, 157]
	  Port			  "1"
	  OutputWhenDisabled	  held
	  InitialOutput		  "0"
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	Line {
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	  Points		  [50, 0; 0, -60]
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	Line {
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	Line {
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	  DstBlock		  "Upper airway sensitivity \nto State"
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	}
	Line {
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	  DstBlock		  "Saturation"
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	}
	Line {
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	  Points		  [35, 0; 0, 95]
	  DstBlock		  "Product"
	  DstPort		  1
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	Annotation {
	  Position		  [371, 101]
	  Text			  "Upper Airway\n\nConductance"
	}
      }
    }
    Block {
      BlockType		      ToWorkspace
      Name		      "State-related\nDrive"
      Position		      [290, 25, 350, 55]
      VariableName	      "S"
      Buffer		      "inf"
      Decimation	      "1"
      SampleTime	      "0.5"
    }
    Block {
      BlockType		      Sum
      Name		      "Sum"
      Ports		      [2, 1, 0, 0, 0]
      Position		      [470, 307, 500, 338]
      Orientation	      left
      Inputs		      "+-"
    }
    Block {
      BlockType		      Sum
      Name		      "Sum of\nChemical\nand State \nDrives\n"
      Ports		      [2, 1, 0, 0, 0]
      Position		      [225, 182, 245, 218]
      Inputs		      "++"
    }
    Block {
      BlockType		      Sum
      Name		      "Total\nChemoreflex\nOutput\n"
      Ports		      [3, 1, 0, 0, 0]
      Position		      [240, 331, 260, 369]
      Orientation	      left
      Inputs		      "+++"
    }
    Block {
      BlockType		      ToWorkspace
      Name		      "Vent"
      Position		      [465, 60, 525, 90]
      VariableName	      "Ve"
      Buffer		      "inf"
      Decimation	      "1"
      SampleTime	      "0.5"
    }
    Block {
      BlockType		      Scope
      Name		      "Ventilation"
      Ports		      [1, 0, 0, 0, 0]
      Position		      [540, 125, 570, 155]
      Floating		      off
      Location		      [686, 30, 1010, 269]
      Open		      on
      Grid		      on
      TickLabels	      on
      ZoomMode		      on
      TimeRange		      "auto"
      YMin		      "0"
      YMax		      "30"
      SaveToWorkspace	      off
      SaveName		      "ScopeData"
      LimitMaxRows	      off
      MaxRows		      "5000"
      Decimation	      "1"
      SampleInput	      off
      SampleTime	      "0"
    }
    Block {
      BlockType		      Constant
      Name		      "Wake-to-sleep\nTransition Time\n(secs)"
      Position		      [35, 40, 55, 60]
      Value		      "60"
    }
    Line {
      SrcBlock		      "Sum"
      SrcPort		      1
      Points		      [-5, 0]
      Branch {
	Points			[0, -20]
	DstBlock		"Central\nChemoreflex1"
	DstPort			1
      }
      Branch {
	Points			[-5, 0; 0, 55]
	DstBlock		"Central\nChemoreflex"
	DstPort			1
      }
    }
    Line {
      SrcBlock		      "Central\nChemoreflex1"
      SrcPort		      1
      DstBlock		      "Peripheral\nGain"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Wake-to-sleep\nTransition Time\n(secs)"
      SrcPort		      1
      DstBlock		      "Math\nFunction"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Central\nChemoreflex"
      SrcPort		      1
      DstBlock		      "Central Gain"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Circulatory\nDelay"
      SrcPort		      1
      Points		      [-5, 0]
      Branch {
	Points			[-10, 0]
	DstBlock		"Sum"
	DstPort			1
      }
      Branch {
	Points			[0, 125; 5, 0]
	Branch {
	  DstBlock		  "Arterial PCO2"
	  DstPort		  1
	}
	Branch {
	  Points		  [0, 60]
	  Branch {
	    DstBlock		    "PaCO2"
	    DstPort		    1
	  }
	  Branch {
	    DstBlock		    "Relational\nOperator"
	    DstPort		    1
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      }
    }
    Line {
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      SrcPort		      1
      Points		      [15, 0; 0, 120]
      DstBlock		      "Circulatory\nDelay"
      DstPort		      1
    }
    Line {
      SrcBlock		      "State-dependent\nUpper Airway"
      SrcPort		      1
      Points		      [20, 0]
      Branch {
	Points			[0, -60; 10, 0]
	Branch {
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	  DstPort		  1
	}
	Branch {
	  DstBlock		  "Ventilation"
	  DstPort		  1
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      }
      Branch {
	Points			[25, 0]
	DstBlock		"Gas Exchange"
	DstPort			1
      }
    }
    Line {
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      SrcPort		      1
      Points		      [-30, 0; 0, -30]
      DstBlock		      "Total\nChemoreflex\nOutput\n"
      DstPort		      2
    }
    Line {
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      SrcPort		      1
      Points		      [-35, 0]
      DstBlock		      "Total\nChemoreflex\nOutput\n"
      DstPort		      1
    }
    Line {
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      SrcPort		      1
      Points		      [0, -30]
      DstBlock		      "Saturation"
      DstPort		      1
    }
    Line {
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      Points		      [15, 0; 0, 25]
      Branch {
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	DstBlock		"Sum of\nChemical\nand State \nDrives\n"
	DstPort			1
      }
      Branch {
	Points			[45, 0]
	Branch {
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