StimulusComponent

Stimuli can comprise multiple components. This table describes each component of a stimulus.

Key

Field	Type	Requirement	Description
stimulus_id		required	A reference to the primary key id of the Stimulus table.
index	index	required	A 1-based index indicating the stacking order of stimulus components. A stimulus component with a higher index is displayed on top of those with lower values, similar to CSS z-index property.

Where

Field	Type	Requirement	Description
x_screen	integer	optional	X coordinates of the stimulus component relative to the left edge of the screen in pixels.
y_screen	integer	optional	Y coordinates of the stimulus component relative to the top edge of the screen in pixels.
x_viewport	float	optional	X coordinates of the stimulus component relative to the left edge of the screen expressed as a fraction of the screen width.
y_viewport	float	optional	Y coordinates of the stimulus component relative to the top edge of the screen expressed as a fraction of the screen height.

What

Field	Type	Requirement	Description
description	string	required	A human readable, compact description of the component.
symbol_name	string	optional	The human-readable name of the displayed symbol.
symbol_count	integer	optional	The number of symbols represented in this component.
symbol_layout	enum	optional	How the symbols are laid out.
color_name	string	optional	The human-readable name of the component color, e.g., red.
color_hex	string	optional	The hexadecimal RGB color code of the component (e.g., #FF0000 for red) with optional alpha channel for transparency.
orientation	enum	optional	Indicates the symbol orientation.