User Reference:StimulusPresentationTask - Revision history

Mellinger: /* P3Speller Compatible */

2025-12-22T13:35:30Z

P3Speller Compatible

← Older revision		Revision as of 13:35, 22 December 2025
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	Multiple sequences can be generated from the given frequencies. The investigator can define how many sequences are generated and presented.		Multiple sequences can be generated from the given frequencies. The investigator can define how many sequences are generated and presented.

	====~~P3Speller Compatible~~====		====P3SpellerCompatible====
	Sequences are random, with each stimulus being presented ''NumberOfSequences'' times, in a block-randomized fashion. When in copy mode, each entry in the ''ToBeCopied'' parameter corresponds to a ''NumberOfSequences''-times repetition of all stimulus codes. In other ''InterpretMode''s, stimulus presentation is repeated indefinitely. This mode is intended as a compatibility mode for transitioning experiments from or to the [[User Reference:P3SpellerTask\|P3SpellerTask]].		Sequences are random, with each stimulus being presented ''NumberOfSequences'' times, in a block-randomized fashion. When in copy mode, each entry in the ''ToBeCopied'' parameter corresponds to a ''NumberOfSequences''-times repetition of all stimulus codes. In other ''InterpretMode''s, stimulus presentation is repeated indefinitely. This mode is intended as a compatibility mode for transitioning experiments from or to the [[User Reference:P3SpellerTask\|P3SpellerTask]].

Mellinger: /* Stimulus Definition */

2025-06-04T16:11:05Z

Stimulus Definition

← Older revision		Revision as of 16:11, 4 June 2025
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	#Caption		#Caption
	#Icon file		#Icon file
	#Audio file		#Audio, video, or AV file

	In addition to stimuli that are part of the actual stimulation sequence, the [[#FocusOn\|FocusOn]]		In addition to stimuli that are part of the actual stimulation sequence, the [[#FocusOn\|FocusOn]]
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	{\|border="1"		{\|border="1"
	\| \|\|stimulus1 \|\|stimulus2		\| \|\|stimulus1 \|\|stimulus2
	\|-		\|-
	\|caption \|\|Donkey \|\|		\|caption \|\|Donkey \|\|
	\|-		\|-
	\|icon \|\|images\donkey.bmp \|\|images\elephant.bmp		\|icon \|\|images\donkey.bmp \|\|images\elephant.bmp
	\|-		\|-
	\|~~audio~~ \|\| ~~sounds~~\~~snicker~~.~~wav~~ \|\|sounds\trumpet.wav		\|av \|\| video\Test_NTSC.mp4 \|\|sounds\trumpet.wav
	\|}		\|}

Swiftj: /* Result */

2025-01-14T21:44:21Z

Result

← Older revision		Revision as of 21:44, 14 January 2025
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	In copy and free modes (see [[#InterpretMode\|InterpretMode]]), the classification result is presented following the sequence ([[#PostSequenceTime\|PostSequenceTime]]). Presentation of the predicted stimulus is preceded with an announcement stimulus.		In copy and free modes (see [[#InterpretMode\|InterpretMode]]), the classification result is presented following the sequence ([[#PostSequenceTime\|PostSequenceTime]]). Presentation of the predicted stimulus is preceded with an announcement stimulus.
	This stimulus' properties are defined by the ''Result'' parameter, which is a matrix in the same format as the ''Stimuli'' and ''FocusOn'' parameters.		This stimulus' properties are defined by the ''Result'' parameter, which is a matrix in the same format as the ''Stimuli'' and ''FocusOn'' parameters.
	As for the "FocusOn" parameter, to control the duration of the "Result" announcement and the predicted stimulus independently of the global [[#StimulusDuration\|StimulusDuration]] parameter, a ''StimulusDuration'' ~~column~~ may be ~~present~~ in the ''Result'' matrix.		As for the "FocusOn" parameter, to control the duration of the "Result" announcement and the predicted stimulus independently of the global [[#StimulusDuration\|StimulusDuration]] parameter, a ''StimulusDuration'' row may be added in the ''Result'' matrix.

	====StimulusWidth====		====StimulusWidth====

Swiftj: /* FocusOn */

2025-01-14T21:44:02Z

FocusOn

← Older revision		Revision as of 21:44, 14 January 2025
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	This stimulus' properties are defined by the ''FocusOn'' parameter, which is a matrix in the same format as the ''Stimuli'' parameter.		This stimulus' properties are defined by the ''FocusOn'' parameter, which is a matrix in the same format as the ''Stimuli'' parameter.
	Usually, this matrix has a single column; when multiple columns are present, all stimuli are presented concurrently.		Usually, this matrix has a single column; when multiple columns are present, all stimuli are presented concurrently.
	To control the duration of the "FocusOn" announcement and the attended stimulus independently of the global [[#StimulusDuration\|StimulusDuration]] parameter, a ''StimulusDuration'' ~~column~~ may be ~~present~~ in the ''FocusOn'' matrix.		To control the duration of the "FocusOn" announcement and the attended stimulus independently of the global [[#StimulusDuration\|StimulusDuration]] parameter, a ''StimulusDuration'' row may be added in the ''FocusOn'' matrix.

	====Result====		====Result====

Mellinger: /* Stimuli */

2023-03-29T16:44:57Z

Stimuli

← Older revision		Revision as of 16:44, 29 March 2023
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	*Caption: a text string, with its size and color depending on the ''CaptionHeight'' and ''CaptionColor'' parameters;		*Caption: a text string, with its size and color depending on the ''CaptionHeight'' and ''CaptionColor'' parameters;
	*Icon: a graphic file (a number of formats are supported through libav), with its size depending on the ''StimulusWidth'' parameter;		*Icon: a graphic file (a number of formats are supported through libav), with its size depending on the ''StimulusWidth'' parameter;
	*Audio: an audio file (a number of formats are supported through libav), with playback starting at the onset of the visual stimuli.		*AV: an AV file (video with or without audio, or an audio file), with playback starting at the onset of the visual stimuli.
	*AV: an AV file (video with or without audio), with playback starting at the onset of the visual stimuli.		For backward compatibility reasons, each of these three rows must be present.
	A blank entry for caption/icon~~/audio~~/AV is accepted, and defines that no presentation of the respective element takes place.		A blank entry for caption/icon/AV is accepted, and defines that no presentation of the respective element takes place.
	Note that for Windows .bmp files, the top left pixel is taken to be the transparent background color, so results may not be as expected. Try a different format, or add a 1-pixel frame in a different color to the image.		Note that for Windows .bmp files, the top left pixel is taken to be the transparent background color, so results may not be as expected. Try a different format, or add a 1-pixel frame in a different color to the image.

Mellinger: /* Stimuli */

2023-03-29T14:58:27Z

Stimuli

← Older revision		Revision as of 14:58, 29 March 2023
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	*AV: an AV file (video with or without audio), with playback starting at the onset of the visual stimuli.		*AV: an AV file (video with or without audio), with playback starting at the onset of the visual stimuli.
	A blank entry for caption/icon/audio/AV is accepted, and defines that no presentation of the respective element takes place.		A blank entry for caption/icon/audio/AV is accepted, and defines that no presentation of the respective element takes place.
	Note that for Windows .bmp files, the top left pixel is taken to be the transparent background color, so results may not be as expected. Try a different format, or ~~put~~ add a 1-pixel frame in a different color to the image.		Note that for Windows .bmp files, the top left pixel is taken to be the transparent background color, so results may not be as expected. Try a different format, or add a 1-pixel frame in a different color to the image.

	Additionally, a number of global stimulus parameters may be overridden with specific values for individual stimuli.		Additionally, a number of global stimulus parameters may be overridden with specific values for individual stimuli.

Mellinger: /* AudioSwitch */

2021-09-17T15:12:25Z

AudioSwitch

← Older revision		Revision as of 15:12, 17 September 2021
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	A boolean parameter to globally switch presentation of audio stimuli on or off.		A boolean parameter to globally switch presentation of audio stimuli on or off.
	To present audio for individual stimuli only, remove audio entries for other stimuli from the [[#Stimuli\|Stimuli]] matrix.		To present audio for individual stimuli only, remove audio entries for other stimuli from the [[#Stimuli\|Stimuli]] matrix.
			====AVSwitch====
			A boolean parameter to globally switch presentation of AV stimuli on or off.
			To present audio for individual stimuli only, remove AV entries for other stimuli from the [[#Stimuli\|Stimuli]] matrix.

	====AudioVolume====		====AudioVolume====

Mellinger: /* Stimuli */

2021-09-17T14:53:25Z

Stimuli

← Older revision		Revision as of 14:53, 17 September 2021
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	*AV: an AV file (video with or without audio), with playback starting at the onset of the visual stimuli.		*AV: an AV file (video with or without audio), with playback starting at the onset of the visual stimuli.
	A blank entry for caption/icon/audio/AV is accepted, and defines that no presentation of the respective element takes place.		A blank entry for caption/icon/audio/AV is accepted, and defines that no presentation of the respective element takes place.
	Note that for ~~graphic files such as~~ Windows .bmp, the top left pixel is taken to be the transparent background color, so results may not be as expected. Try a different format, or put add a 1-pixel frame in a different color to the image.		Note that for Windows .bmp files, the top left pixel is taken to be the transparent background color, so results may not be as expected. Try a different format, or put add a 1-pixel frame in a different color to the image.

	Additionally, a number of global stimulus parameters may be overridden with specific values for individual stimuli.		Additionally, a number of global stimulus parameters may be overridden with specific values for individual stimuli.

Mellinger: /* Stimuli */

2021-09-17T14:39:25Z

Stimuli

← Older revision		Revision as of 14:39, 17 September 2021
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	For each stimulus, the following properties are defined by its row entries:		For each stimulus, the following properties are defined by its row entries:
	*Caption: a text string, with its size and color depending on the ''CaptionHeight'' and ''CaptionColor'' parameters;		*Caption: a text string, with its size and color depending on the ''CaptionHeight'' and ''CaptionColor'' parameters;
	*Icon: a graphic file (a number of formats are supported), with its size depending on the ''StimulusWidth'' parameter;		*Icon: a graphic file (a number of formats are supported through libav), with its size depending on the ''StimulusWidth'' parameter;
	*Audio: an audio file (~~Windows WAV~~), with playback starting at the onset of the visual stimuli.		*Audio: an audio file (a number of formats are supported through libav), with playback starting at the onset of the visual stimuli.
	A blank entry for caption/icon/audio is accepted, and defines that no presentation of the respective element takes place.		*AV: an AV file (video with or without audio), with playback starting at the onset of the visual stimuli.
			A blank entry for caption/icon/audio/AV is accepted, and defines that no presentation of the respective element takes place.
	Note that for graphic files such as Windows .bmp, the top left pixel is taken to be the transparent background color, so results may not be as expected. Try a different format, or put add a 1-pixel frame in a different color to the image.		Note that for graphic files such as Windows .bmp, the top left pixel is taken to be the transparent background color, so results may not be as expected. Try a different format, or put add a 1-pixel frame in a different color to the image.

Mellinger: /* AudioVolume */

2021-09-17T14:36:33Z

AudioVolume

← Older revision		Revision as of 14:36, 17 September 2021
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	The volume for audio playback, in percent of maximum volume.		The volume for audio playback, in percent of maximum volume.
	{{StimulusParamOverride}}		{{StimulusParamOverride}}

			====AVPlayToEnd====
			If yes, AV stimuli will be played as long as they last; if no, AV stimuli will be aborted after the specified stimulus duration has expired.

	==States==		==States==