threshold_type_maass_stochastic.h File Reference

Stochastic threshold, due to Wolfgang Maass et al. More...

#include "threshold_type.h"
#include <random.h>
#include <stdfix-exp.h>

Go to the source code of this file.

Data Structures
struct	threshold_type_params_t
	Stochastic threshold parameters. More...
struct	threshold_type_t
	Stochastic threshold configuration. More...

Macros
#define	PROB_SATURATION   0.8k
	Probability of firing when at saturation.

Functions
static void	threshold_type_initialise (threshold_type_t *state, threshold_type_params_t *params, uint32_t n_steps_per_timestep)
static void	threshold_type_save_state (threshold_type_t *state, threshold_type_params_t *params)
static bool	threshold_type_is_above_threshold (state_t value, threshold_type_t *threshold_type)
	Determines if the value given is above the threshold value.

Variables
static volatile REAL	ten = 10k

Detailed Description

Stochastic threshold, due to Wolfgang Maass et al.

Definition in file threshold_type_maass_stochastic.h.

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Data Structure Documentation

threshold_type_params_t

struct threshold_type_params_t

Stochastic threshold parameters.

Definition at line 26 of file threshold_type_fixed_prob.h.

Data Fields
REAL	threshold_value	The value of the static threshold.
UREAL	prob	The probability of spiking when the threshold has been crossed.
mars_kiss64_seed_t	random_seed	The random seed.
REAL	du_th	sensitivity of soft threshold to membrane voltage [mV-1]
REAL	tau_th	time constant for soft threshold [ms-1]
REAL	v_thresh	soft threshold value [mV]
REAL	time_step_ms	time step scaling factor

threshold_type_t

struct threshold_type_t

Stochastic threshold configuration.

Static threshold configuration.

Definition at line 36 of file threshold_type_fixed_prob.h.

Data Fields
REAL	threshold_value	The value of the static threshold.
uint32_t	prob	The probability of spiking when the threshold has been crossed.
mars_kiss64_seed_t	random_seed	The random seed.
REAL	du_th_inv	sensitivity of soft threshold to membrane voltage [mV-1] (inverted in python code)
REAL	tau_th_inv	time constant for soft threshold [ms-1] (inverted in python code)
REAL	v_thresh	soft threshold value [mV]
REAL	neg_machine_time_step_ms_div_10	time step scaling factor

Macro Definition Documentation

PROB_SATURATION

#define PROB_SATURATION   0.8k

Probability of firing when at saturation.

Definition at line 27 of file threshold_type_maass_stochastic.h.

Function Documentation

threshold_type_initialise()

static void threshold_type_initialise ( threshold_type_t *  state, threshold_type_params_t *  params, uint32_t  n_steps_per_timestep  )

static

Definition at line 58 of file threshold_type_maass_stochastic.h.

threshold_type_save_state()

static void threshold_type_save_state ( threshold_type_t *  state, threshold_type_params_t *  params  )

static

Definition at line 67 of file threshold_type_maass_stochastic.h.

threshold_type_is_above_threshold()

static bool threshold_type_is_above_threshold ( state_t  value, threshold_type_t *  threshold_type  )

inlinestatic

Determines if the value given is above the threshold value.

Parameters

[in]	value	The value to determine if it is above the threshold
[in]	threshold_type	The parameters to use to determine the result

Returns

True if the neuron should fire

Definition at line 75 of file threshold_type_maass_stochastic.h.

Variable Documentation

ten

volatile REAL ten = 10k

static

Definition at line 56 of file threshold_type_maass_stochastic.h.