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IHCRP_Meddis: Inner Hair Cell Receptor Potential


File name
MoHCRPMeddis.[ch]


Description
Meddis receptor potential module. It supplies input to the inner hair cell synapse models, e.g. IHC_Meddis86a: Inner Hair Cell Synapse, page 197 or IHC_Carney: Inner Hair Cell Synapse (1993), page 172.


Example parameter file format
1.564	Q parameter.
0.015	V parameter.
0.55e-3	Potassium channel time constant (s).



Test program directory
Tests/Models/Transduction/Hair_Cell/RecPoten

Generic Module Routines

This module has the standard Generic Module Routines (Basic Module Routines used in Generic Programming, page 52).

The RunModel_IHCRP_Meddis(...) Process Routine

Syntax
BOOLN RunModel_IHCRP_Meddis(EarObjectPtr data);


Returns
TRUE if the process is successful, otherwise it returns FALSE.

The GetRestingResponse_IHCRP_Meddis(...) Routine

Syntax
double GetRestingResponse_IHCRP_Meddis(void);


Returns
The resting (reference) receptor potential (V).

The SetMTimeConstTm_IHCRP_Meddis(...) Routine

Syntax
BOOLN SetMTimeConstTm_IHCRP_Meddis(double theMTimeConstTm);


Returns
TRUE if the function is successful, otherwise it returns FALSE.

The SetParamQ_IHCRP_Meddis(...) Routine

Syntax
BOOLN SetParamQ_IHCRP_Meddis(double theParamQ);


Returns
TRUE if the function is successful, otherwise it returns FALSE.

The SetParamV_IHCRP_Meddis(...) Routine

Syntax
BOOLN SetParamV_IHCRP_Meddis(double theParamV);


Returns
TRUE if the function is successful, otherwise it returns FALSE.

The SetPars_IHCRP_Meddis(...) Routine

Syntax
BOOLN SetPars_IHCRP_Meddis(double q, double v, double tm);


Returns
TRUE if the function is successful, otherwise it returns FALSE.

Example: Tests/Models/Transduction/RecPoten/ACDCRatio.c

Parameter file:ACDCRatio.par:
#
# Main Parameter file
#
output.dat	Name of output file.
#
# Module specifications.
#
#Par. file		Name				Description
#---------		-----				-------------
PTone1.par		PureTone			Stimulus generation paradigm.
GPigChinPE.par	PreEmphasis_BandPass	Outer-/middler-ear filter model.
DRNL18k.par		BasilarM_DRNL		basilar membrane filter model.
MeddisRP1.par	IHCRP_Meddis		IHC receptor potential model.

#
# Miscellaneous parameters
#
100	Lowest filter centre frequency (hz).
10000	Highest filter centre frequency (hz).
10		No. of frequencies tested.
3		No. of searches for a maximum/minimum.
2.5e-3	Ramp up rise time for signal (s).
Output

See figure [118] on page 217. At the time of writing, the PC version encounters an error calculating the last two analysis reading for this test program (with an "exp overflow error"). No attempt has yet been made to address this problem, as the model is still in development. Also the problem did not occur in the Macintosh and UNIX testing. There is no problem with the previous calculated readings when the program is run, calculating only the first eight readings.

Example: Tests/Models/Transduction/RecPoten/PeakTroughs.c

Parameter file:PeakTroughs.par:
#
# Main Parameter file
#
output.dat	Name of output file.
#
# Module specifications.
#
#Par. file		Name				Description
#---------		-----				-------------
PTone2.par		PureTone			Stimulus generation paradigm.
GPigChinPE.par	null				Outer-/middler-ear filter model.
DRNL700.par		BasilarM_DRNL		basilar membrane filter model.
MeddisRP1.par	IHCRP_Meddis		IHC receptor potential model.
#
# Miscellaneous parameters
#
0.0	Initial stimulus intensity (dB SPL).
100	Final stimulus Intensity step (dB SPL).
5.0	Intensity increment (dB).
3		No. of searches for a maximum/minimum.
2.5e-3	Ramp up rise time for signal (s).
Comments

At the time of writing, the PC version encounters an error calculating the last intensity reading for this test program (with an "exp overflow error"). No attempt has yet been made to address this problem, as the model is still in development. Also the problem did not occur in the Macintosh and UNIX testing. There is no problem with the previous calculated readings when the program is run, calculating only the readings upt to 95 dB SPL.

Output

Figure [121] Peak-Trough characteristics for the Meddis IHCRP model.

Example: Tests/Models/Transduction/RecPoten/ACDCvsInt.c

Parameter file:ACDCvsInt.par:

# Main Parameter file
#
output.dat	Name of output file.
#
# Module specifications.
#
#Par. file		Name				Description
#---------		-----				-------------
PTone4.par		PureTone			Stimulus generation paradigm.
GPigChinPE.par	null				Outer-/middler-ear filter model.
DRNL18k.par		BasilarM_DRNL		basilar membrane filter model.
MeddisRP1.par	IHCRP_Meddis		IHC receptor potential model.

#
# Miscellaneous parameters
#
0.0	Initial stimulus intensity (dB SPL).
105.0	Final stimulus Intensity step (dB SPL).
5.0	Intensity increment (dB).
3		No. of searches for a maximum/minimum.
2.5e-3	Ramp up rise time for signal (s).
Output

See figure [120] on page 219.


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