logGaborStimulus Class Reference

logGaborStimulus: orientation & SF band-pass limited filter More...

Detailed Description

logGaborStimulus: orientation & SF band-pass limited filter

If you use this in published research please cite "Horizontal information drives the behavioral signatures of face processing" Goffaux & Dakin (2010) Frontiers in Perception Science v1, 143 | May 2015, Steven Dakin, s.dak.nosp@m.in@a.nosp@m.uckla.nosp@m.nd.a.nosp@m.c.nz

Copyright ©2014-2022 Ian Max Andolina — released: LGPL3, see LICENCE.md

Inheritance diagram for logGaborStimulus:

Public Member Functions
function	logGaborStimulus (in varargin)
	Class constructor.
function	setup (in me, in sM, in in)
	Setup this object in preperation for use When displaying a stimulus object, the main properties that are to be modified are copied into cache copies of the property, both to convert from visual description (c/d, Hz, degrees) to computer metrics; and to be animated and modified as independant variables. So xPosition is copied to xPositionOut and converted from degrees to pixels. The animation and drawing functions use these modified properties, and when they are updated, for example to change to a new xPosition, internal methods ensure reconversion and update any dependent properties. This method initialises the object in preperation for display.
function	set_xPositionOut (in me, in value)
function	set_yPositionOut (in me, in value)
function	set_sizeOut (in me, in value)
function	update (in me)
	Update this stimulus object structure for screenManager.
function	draw (in me)
	Draw this stimulus object.
function	animate (in me)
	Animate an structure for screenManager.
function	reset (in me)
	Reset an structure for screenManager.
function	loadImage (in me, in in)
	Load an image.
function	scaleRange (in me, in in)
	Load an image.
Public Member Functions inherited from baseStimulus
virtual	setup (in runObject)
	ALL Children must implement these 5 methods!
function	baseStimulus (in varargin)
	Class constructor.
function set	colour (in me, in value)
	colour set method Allow 1 (R=G=B) 3 (RGB) or 4 (RGBA) value colour
function set	alpha (in me, in value)
	alpha set method
function get	delta (in me)
	delta Get method delta is the normalised number of pixels per frame to move a stimulus
function get	dX (in me)
	dX Get method X position increment for a given delta and angle
function get	dY (in me)
	dY Get method Y position increment for a given delta and angle
function	show (in me)
	Method to set isVisible=true.
function	hide (in me)
	Method to set isVisible=false.
function	setOffTime (in me, in time)
	set offTime
function	setDelayTime (in me, in time)
	set delayTime
function	resetTicks (in me)
	reset the various tick counters for our stimulus
function	getMousePosition (in me)
	get mouse position we make sure this is only called once per animation tick to improve performance and ensure all stimuli that are following mouse position have consistent X and Y per frame update This sets mouseX and mouseY and mouseValid if mouse is within PTB screen (useful for mouse override positioning for stimuli)
function	run (in me, in benchmark, in runtime, in s, in forceScreen, in showVBL)
	Run stimulus in a window to preview it.
function	makePanel (in me, in parent)
	make a GUI properties panel for this object
function	selectFilePanel (in me, in varargin)
	read values from a GUI properties panel for this object
function	readPanel (in me, in varargin)
	read values from a GUI properties panel for this object
function	showPanel (in me)
	show GUI properties panel for this object
function	hidePanel (in me)
	hide GUI properties panel for this object
function	closePanel (in me, in varargin)
	close GUI panel for this object
function	cleanHandles (in me, in ignoredArg)
	clean any handles
function	getP (in me, in name, in range)
	gets a property copy or original property
function	setP (in me, in name, in value)
	sets a property copy or original property
function	updateXY (in me, in x, in y, in useDegrees)
	Update only position info, faster and doesn't reset image etc.
Public Member Functions inherited from optickaCore
function	optickaCore (in varargin)
	Class constructor.
function get	fullName (in me)
function	getALF (in me, in subject, in sessionPrefix, in lab, in create)
function	findAttributes (in me, in attrName, in attrValue)
function	findAttributesandType (in me, in attrName, in attrValue, in type)
	find properties of object with specific attributes, for example all properties whose GetAcccess attribute is public and type is logical.
function	findPropertyDefault (in me, in propName)
function	clone (in me)
	Use this syntax to make a deep copy of the object, i.e. OBJ_OUT has the same field values, but will not behave as a handle-copy of me anymore.
function	checkSuperclasses (in List)
function	editProperties (in me, in properties)
	method to modify a set of properties
function	setProp (in me, in property, in value)
	method to fast change a particular value. This is useful for use in anonymous functions, like in the state machine.
function	initialiseGlobals (in me, in doReset, in doOpen)
function	initialiseSaveFile (in me)
	Initialise Save prefix.
function	checkPaths (in me)
	checks the paths are valid

Static Public Member Functions
static function	doLogGabor (in im, in FreqPeak, in FreqSigma, in ThetaPeak, in ThetaSigma)
static function	makeGrating (in size)
Static Public Member Functions inherited from baseStimulus
static function	d2r (in degrees)
	degrees2radians
static function	r2d (in r)
	radians2degrees
static function	findDistance (in x1, in y1, in x2, in y2)
	findDistance in X and Y coordinates
static function	updatePosition (in delta, in angle)
	updatePosition returns dX and dY given an angle and delta
Static Public Member Functions inherited from optickaCore
static function	makeArgs (in args)
	Converts cell args to structure array.
static function	addDefaults (in args, in defs)
	add default options to arg input
static function	hasKey (in in, in key)
	check if a struct / object has a propery / field
static function	getKeys (in device)
	PTB Get key presses, stops key bouncing.

Public Attributes
Property	fileName
	filename to load, if empty use random noise
Property	sf
	peak spatial frequency
Property	sfSigma
	spatial frequency SD
Property	angleSigma
	orientation SD
Property	contrast
	contrast multiplier
Property	direction
Property	lockAngle
Property	seed
	seed for random textures
Property	mask
	use mask?
Property	maskColour
	colour of the mask, empty sets mask colour to = screen manager background
Property	maskSmoothing
	smooth the alpha edge of the mask by this number of pixels
Property	type
	type
Property	modulateColour
Property	regenerateTexture
Property	phaseReverseTime
	For checkerboard, allow timed phase reversal.
Property	scale
	scale is set by size
Property	family
Property	matrix
Property	width
Property	height
Public Attributes inherited from baseStimulus
Property	type
	stimulus type
Property	xPosition
Property	yPosition
Property	size
Property	colour
Property	alpha
	Alpha (opacity) [0-1], this gets combined with the RGB colour.
Property	startPosition
Property	speed
Property	angle
	angle in degrees (0 - 360)
Property	delayTime
Property	offTime
	time to turn stimulus off, relative to stimulus onset
Property	isVisible
	true or false, whether to draw() this object
Property	mouseOverride
	override X and Y position with mouse input? Useful for RF mapping
Property	showOnTracker
	show the position on the Eyetracker display?
Property	verbose
	Do we log extra details to the command-line?
Property	xFinal
Property	yFinal
Property	mvRect
Property	szIsPx
Property	szPx
	computed size in pixels
Property	szD
	computed size in °
Property	xFinalD
	X and Y position in °
Property	yFinalD
Property	isRect
Property	tick
	tick updates +1 on each call of draw (even if delay or off is true and no stimulus is drawn, resets on each update
Property	drawTick
	draw tick only updates when a draw is actually performed, resets on each update
Property	ppd
	pixels per degree (normally inhereted from screenManager)
Property	delta
	What our per-frame motion delta is.
Property	dX
	X update which is computed from our speed and angle.
Property	dY
	X update which is computed from our speed and angle.
Public Attributes inherited from optickaCore
Property	name
	object name
Property	comment
	comment
Property	verbose
	verbose logging, subclasses must assign this. This is normally logical true/false
Property	dateStamp
	clock() dateStamp set on construction
Property	uuid
	universal ID
Property	paths
	storage of various paths
Property	fullName
	The fullName is the object name combined with its uuid and class name.

Protected Member Functions
function	makeMask (in me)
	Make circular mask.
function	setRect (in me)
	setRect setRect makes the PsychRect based on the texture and screen values This is overridden from parent class so we can scale texture using the size value
function	checkFileName (in me)
function	findFiles (in me)
	findFiles
Protected Member Functions inherited from baseStimulus
function	addRuntimeProperties (in me)
	These are transient properties that specify actions during runtime.
function	updateRuntimeProperties (in me)
	Update transient properties that specify actions during runtime.
function	computePosition (in me)
	compute xFinal and yFinal (in pixels) taking startPosition, xPosition, yPosition and direction/angle into account
function	setAnimationDelta (in me)
function	setRect (in me)
function	toStructure (in me, in tmp)
	Converts properties to a structure.
function	removeTmpProperties (in me)
	Finds and removes dynamic properties.
function	delete (in me)
Protected Member Functions inherited from optickaCore
function	parseArgs (in me, in args, in allowedProperties)
	Sets properties from a structure or normal arguments pairs, ignores invalid or non-allowed properties.
function	addArgs (in me, in args)
function	setPaths (in me)
	Sets properties from a structure or normal arguments pairs, ignores invalid or non-allowed properties.
function	getFonts (in me)
	set paths for object
function	toStructure (in me)
	Converts properties to a structure.
function	getType (in me, in in)
function	logOutput (in me, in in, in message, in override)
	Give a metaproperty return the likely property class.
function	salutation (in me, in varargin)
	Prints messages dependent on verbosity.

Additional Inherited Members
Public Types inherited from baseStimulus
enum	Events { readPanelUpdate }
Protected Attributes inherited from baseStimulus
Property	family
	the stimulus family (grating, dots etc.)
Property	texture
	Our texture pointer for texture-based stimuli.
Property	handles
	handles for the GUI
Property	sM
	our screen manager
Property	animator
	animation manager
Property	screenVals
	screen settings generated by sM on setup
Property	isSetup
Property	isGUI
	is panel constructed?
Property	dstRect
	initial screen rectangle position [LEFT TOP RIGHT BOTTOM]
Property	mouseValid
	is mouse position within screen co-ordinates?
Property	mouseX
	mouse X position
Property	mouseY
	mouse Y position
Property	delayTicks
	delay ticks to wait until display
Property	offTicks
	ticks before stimulus turns off
Property	inSetup
	are we setting up?
Property	delta_
	delta cache
Property	dX_
	dX cache
Property	dY_
	dY cache
Property	isInSetColour
	deal with interaction of colour and alpha
Property	setLoop
Property	ignorePropertiesBase
	Which properties to ignore cloning when making transient copies in setup.
Property	ignorePropertiesUIBase
	Which properties to not draw in the UI panel.
Protected Attributes inherited from optickaCore
Property	cloning
	are we cloning this from another object
Property	mversion
	Matlab version number, this is transient so it is not saved.
Property	sansFont
	sans font
Property	monoFont
	monoFont
Property	className
	class name
Property	savePrefix
	save prefix generated from clock time
Property	fullName_
	cached full name

Constructor & Destructor Documentation

logGaborStimulus()

function logGaborStimulus::logGaborStimulus

(

in

varargin

)

Class constructor.

This parses any input values and initialises the object.

Parameters

varargin

are passed as a list of parametoer or a structure of properties which is parsed.

Returns

instance of opticka class.

Member Function Documentation

animate()

function logGaborStimulus::animate ( in  me )

virtual

Animate an structure for screenManager.

Reimplemented from baseStimulus.

checkFileName()

function logGaborStimulus::checkFileName ( in  me )

protected

doLogGabor()

static function logGaborStimulus::doLogGabor ( in  im, in  FreqPeak, in  FreqSigma, in  ThetaPeak, in  ThetaSigma  )

static

draw()

function logGaborStimulus::draw ( in  me )

virtual

Draw this stimulus object.

Reimplemented from baseStimulus.

findFiles()

function logGaborStimulus::findFiles ( in  me )

protected

findFiles

loadImage()

function logGaborStimulus::loadImage	(	in	me,
		in	in
	)

Load an image.

makeGrating()

static function logGaborStimulus::makeGrating ( in  size )

static

makeMask()

function logGaborStimulus::makeMask ( in  me )

protected

Make circular mask.

reset()

function logGaborStimulus::reset ( in  me )

virtual

Reset an structure for screenManager.

Reimplemented from baseStimulus.

scaleRange()

function logGaborStimulus::scaleRange	(	in	me,
		in	in
	)

Load an image.

set_sizeOut()

function logGaborStimulus::set_sizeOut	(	in	me,
		in	value
	)

set_xPositionOut()

function logGaborStimulus::set_xPositionOut	(	in	me,
		in	value
	)

set_yPositionOut()

function logGaborStimulus::set_yPositionOut	(	in	me,
		in	value
	)

setRect()

function logGaborStimulus::setRect ( in  me )

protected

setRect setRect makes the PsychRect based on the texture and screen values This is overridden from parent class so we can scale texture using the size value

setup()

function logGaborStimulus::setup	(	in	me,
		in	sM,
		in	in
	)

Setup this object in preperation for use When displaying a stimulus object, the main properties that are to be modified are copied into cache copies of the property, both to convert from visual description (c/d, Hz, degrees) to computer metrics; and to be animated and modified as independant variables. So xPosition is copied to xPositionOut and converted from degrees to pixels. The animation and drawing functions use these modified properties, and when they are updated, for example to change to a new xPosition, internal methods ensure reconversion and update any dependent properties. This method initialises the object in preperation for display.

Parameters

sM	screenManager object for reference
in	matrix for conversion to a PTB texture

update()

function logGaborStimulus::update ( in  me )

virtual

Update this stimulus object structure for screenManager.

Reimplemented from baseStimulus.

Member Data Documentation

angleSigma

Property logGaborStimulus::angleSigma

orientation SD

contrast

Property logGaborStimulus::contrast

contrast multiplier

direction

Property logGaborStimulus::direction

the direction of the whole grating object - i.e. the object can move (speed property) as well as the grating texture rotate within the object.

family

Property logGaborStimulus::family

fileName

Property logGaborStimulus::fileName

filename to load, if empty use random noise

height

Property logGaborStimulus::height

lockAngle

Property logGaborStimulus::lockAngle

do we lock the angle to the direction? If so what is the offset (0 = parallel, 90 = orthogonal etc.)

mask

Property logGaborStimulus::mask

use mask?

maskColour

Property logGaborStimulus::maskColour

colour of the mask, empty sets mask colour to = screen manager background

maskSmoothing

Property logGaborStimulus::maskSmoothing

smooth the alpha edge of the mask by this number of pixels

matrix

Property logGaborStimulus::matrix

modulateColour

Property logGaborStimulus::modulateColour

phaseReverseTime

Property logGaborStimulus::phaseReverseTime

For checkerboard, allow timed phase reversal.

regenerateTexture

Property logGaborStimulus::regenerateTexture

update() method also regenerates the texture, this can be slow but normally update() is only called after a trial has finished

scale

Property logGaborStimulus::scale

scale is set by size

seed

Property logGaborStimulus::seed

seed for random textures

sf

Property logGaborStimulus::sf

peak spatial frequency

sfSigma

Property logGaborStimulus::sfSigma

spatial frequency SD

type

Property logGaborStimulus::type

type

width

Property logGaborStimulus::width

---

The documentation for this class was generated from the following file:

• stimuli/logGaborStimulus.m