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1950 lines
52 KiB
HTML
Executable File
1950 lines
52 KiB
HTML
Executable File
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jsPsych
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mouse-tracking
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jspsych/jspsych
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Introduction
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Demo Experiment: Simple Reaction Time Task
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Overview
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Creating an Experiment: The Timeline
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</a>
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Plugins
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<a href="../../overview/extensions/" class="md-nav__link">
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Extensions
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Dynamic Parameters
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Controlling Visual Appearance
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<a href="../../overview/data/" class="md-nav__link">
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Data Storage, Aggregation, and Manipulation
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Simulation Modes
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<a href="../../overview/running-experiments/" class="md-nav__link">
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Running Experiments
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<a href="../../overview/experiment-options/" class="md-nav__link">
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Experiment Settings
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<a href="../../overview/events/" class="md-nav__link">
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Events
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<a href="../../overview/record-browser-interactions/" class="md-nav__link">
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Record Browser Interactions
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Media Preloading
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<a href="../../overview/fullscreen/" class="md-nav__link">
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Fullscreen Experiments
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<li class="md-nav__item">
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<a href="../../overview/eye-tracking/" class="md-nav__link">
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Eye Tracking
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</a>
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<li class="md-nav__item">
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<a href="../../overview/exclude-browser/" class="md-nav__link">
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Exclude Participants Based on Browser Features
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</a>
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<li class="md-nav__item">
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<a href="../../overview/progress-bar/" class="md-nav__link">
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Automatic Progress Bar
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</a>
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<li class="md-nav__item">
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<a href="../../overview/prolific/" class="md-nav__link">
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Integrating with Prolific
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</a>
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<li class="md-nav__item">
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<a href="../../overview/mturk/" class="md-nav__link">
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Integrating with Mechanical Turk
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</a>
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<a href="../../overview/browser-device-support/" class="md-nav__link">
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Browser and Device Support
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</a>
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<li class="md-nav__item">
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<a href="../../overview/timing-accuracy/" class="md-nav__link">
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Timing Accuracy
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mouse-tracking
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<a href="https://github.com/jspsych/jsPsych/edit/master/docs/extensions/mouse-tracking.md" title="Edit this page" class="md-content__button md-icon">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg>
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<h1 id="mouse-tracking">mouse-tracking<a class="headerlink" href="#mouse-tracking" title="Permanent link">¶</a></h1>
|
|
<p>This extension supports mouse tracking.
|
|
Specifically, it can record the <code>x</code> <code>y</code> coordinates and time of <a href="https://developer.mozilla.org/en-US/docs/Web/API/Element/mousemove_event">mousemove events</a>, <a href="https://developer.mozilla.org/en-US/docs/Web/API/Element/mousedown_event">mousedown events</a>, and <a href="https://developer.mozilla.org/en-US/docs/Web/API/Element/mouseup_event">mouseup events</a>.
|
|
It also allows recording of the <a href="https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect">bounding rectangle</a> of elements on the screen to support the calculation of mouse events relative to different elements.</p>
|
|
<h2 id="parameters">Parameters<a class="headerlink" href="#parameters" title="Permanent link">¶</a></h2>
|
|
<h3 id="initialization-parameters">Initialization Parameters<a class="headerlink" href="#initialization-parameters" title="Permanent link">¶</a></h3>
|
|
<p>Initialization parameters can be set when calling <code>initJsPsych()</code></p>
|
|
<div class="highlight"><pre><span></span><code><span class="nx">initJsPsych</span><span class="p">({</span>
|
|
<span class="nx">extensions</span><span class="o">:</span> <span class="p">[</span>
|
|
<span class="p">{</span><span class="nx">type</span><span class="o">:</span> <span class="nx">jsPsychExtensionMouseTracking</span><span class="p">,</span> <span class="nx">params</span><span class="o">:</span> <span class="p">{...}}</span>
|
|
<span class="p">]</span>
|
|
<span class="p">})</span>
|
|
</code></pre></div>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>Parameter</th>
|
|
<th>Type</th>
|
|
<th>Default Value</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
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<tbody>
|
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<tr>
|
|
<td>minimum_sample_time</td>
|
|
<td>number</td>
|
|
<td>0</td>
|
|
<td>The minimum time between samples for <code>mousemove</code> events in milliseconds. If <code>mousemove</code> events occur more rapidly than this limit, they will not be recorded. Use this if you want to keep the data files smaller and don't need high resolution tracking data. The default value of 0 means that all events will be recorded.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h3 id="trial-parameters">Trial Parameters<a class="headerlink" href="#trial-parameters" title="Permanent link">¶</a></h3>
|
|
<p>Trial parameters can be set when adding the extension to a trial object.</p>
|
|
<div class="highlight"><pre><span></span><code><span class="kd">var</span> <span class="nx">trial</span> <span class="o">=</span> <span class="p">{</span>
|
|
<span class="nx">type</span><span class="o">:</span> <span class="nx">jsPsych</span><span class="p">...,</span>
|
|
<span class="nx">extensions</span><span class="o">:</span> <span class="p">[</span>
|
|
<span class="p">{</span><span class="nx">type</span><span class="o">:</span> <span class="nx">jsPsychExtensionWebgazer</span><span class="p">,</span> <span class="nx">params</span><span class="o">:</span> <span class="p">{...}}</span>
|
|
<span class="p">]</span>
|
|
<span class="p">}</span>
|
|
</code></pre></div>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>Parameter</th>
|
|
<th>Type</th>
|
|
<th>Default Value</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>targets</td>
|
|
<td>array</td>
|
|
<td>[]</td>
|
|
<td>A list of elements on the page that you would like to record the coordinates of for comparison with the WebGazer data. Each entry in the array should be a valid <a href="https://www.w3schools.com/cssref/css_selectors.asp">CSS selector string</a> that identifies the element. The selector string should be valid for exactly one element on the page. If the selector is valid for more than one element then only the first matching element will be recorded.</td>
|
|
</tr>
|
|
<tr>
|
|
<td>events</td>
|
|
<td>array</td>
|
|
<td>['mousemove']</td>
|
|
<td>A list of events to track. Can include 'mousemove', 'mousedown', and 'mouseup'.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h2 id="data-generated">Data Generated<a class="headerlink" href="#data-generated" title="Permanent link">¶</a></h2>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>Name</th>
|
|
<th>Type</th>
|
|
<th>Value</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>mouse_tracking_data</td>
|
|
<td>array</td>
|
|
<td>An array of objects containing mouse movement data for the trial. Each object has an <code>x</code>, a <code>y</code>, a <code>t</code>, and an <code>event</code> property. The <code>x</code> and <code>y</code> properties specify the mouse coordinates in pixels relative to the top left corner of the viewport and <code>t</code> specifies the time in milliseconds since the start of the trial. The <code>event</code> will be either 'mousemove', 'mousedown', or 'mouseup' depending on which event was generated.</td>
|
|
</tr>
|
|
<tr>
|
|
<td>mouse_tracking_targets</td>
|
|
<td>object</td>
|
|
<td>An object contain the pixel coordinates of elements on the screen specified by the <code>.targets</code> parameter. Each key in this object will be a <code>selector</code> property, containing the CSS selector string used to find the element. The object corresponding to each key will contain <code>x</code> and <code>y</code> properties specifying the top-left corner of the object, <code>width</code> and <code>height</code> values, plus <code>top</code>, <code>bottom</code>, <code>left</code>, and <code>right</code> parameters which specify the <a href="https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect">bounding rectangle</a> of the element.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h2 id="examples">Examples<a class="headerlink" href="#examples" title="Permanent link">¶</a></h2>
|
|
<details class="example" open="open"><summary>Record mouse movement data and play it back</summary><div class="tabbed-set" data-tabs="1:2"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><label for="__tabbed_1_1">Code</label><div class="tabbed-content">
|
|
<div class="highlight"><pre><span></span><code><span class="kd">var</span> <span class="nx">trial</span> <span class="o">=</span> <span class="p">{</span>
|
|
<span class="nx">type</span><span class="o">:</span> <span class="nx">jsPsychHtmlButtonResponse</span><span class="p">,</span>
|
|
<span class="nx">stimulus</span><span class="o">:</span> <span class="s1">'<div id="target" style="width:250px; height: 250px; background-color: #333; margin: auto;"></div>'</span><span class="p">,</span>
|
|
<span class="nx">choices</span><span class="o">:</span> <span class="p">[</span><span class="s1">'Done'</span><span class="p">],</span>
|
|
<span class="nx">prompt</span><span class="o">:</span> <span class="s2">"<p>Move your mouse around inside the square.</p>"</span><span class="p">,</span>
|
|
<span class="nx">extensions</span><span class="o">:</span> <span class="p">[</span>
|
|
<span class="p">{</span><span class="nx">type</span><span class="o">:</span> <span class="nx">jsPsychExtensionMouseTracking</span><span class="p">,</span> <span class="nx">params</span><span class="o">:</span> <span class="p">{</span><span class="nx">targets</span><span class="o">:</span> <span class="p">[</span><span class="s1">'#target'</span><span class="p">]}}</span>
|
|
<span class="p">],</span>
|
|
<span class="nx">data</span><span class="o">:</span> <span class="p">{</span>
|
|
<span class="nx">task</span><span class="o">:</span> <span class="s1">'draw'</span>
|
|
<span class="p">}</span>
|
|
<span class="p">};</span>
|
|
|
|
<span class="kd">var</span> <span class="nx">replay</span> <span class="o">=</span> <span class="p">{</span>
|
|
<span class="nx">type</span><span class="o">:</span> <span class="nx">jsPsychHtmlButtonResponse</span><span class="p">,</span>
|
|
<span class="nx">stimulus</span><span class="o">:</span> <span class="s1">'<div id="target" style="width:250px; height: 250px; background-color: #333; margin: auto; position: relative;"></div>'</span><span class="p">,</span>
|
|
<span class="nx">choices</span><span class="o">:</span> <span class="p">[</span><span class="s1">'Done'</span><span class="p">],</span>
|
|
<span class="nx">prompt</span><span class="o">:</span> <span class="s2">"<p>Here's the recording of your mouse movements</p>"</span><span class="p">,</span>
|
|
<span class="nx">on_load</span><span class="o">:</span> <span class="kd">function</span><span class="p">(){</span>
|
|
<span class="kd">var</span> <span class="nx">mouseMovements</span> <span class="o">=</span> <span class="nx">jsPsych</span><span class="p">.</span><span class="nx">data</span><span class="p">.</span><span class="nx">get</span><span class="p">().</span><span class="nx">last</span><span class="p">(</span><span class="mf">1</span><span class="p">).</span><span class="nx">values</span><span class="p">()[</span><span class="mf">0</span><span class="p">].</span><span class="nx">mouse_tracking_data</span><span class="p">;</span>
|
|
<span class="kd">var</span> <span class="nx">targetRect</span> <span class="o">=</span> <span class="nx">jsPsych</span><span class="p">.</span><span class="nx">data</span><span class="p">.</span><span class="nx">get</span><span class="p">().</span><span class="nx">last</span><span class="p">(</span><span class="mf">1</span><span class="p">).</span><span class="nx">values</span><span class="p">()[</span><span class="mf">0</span><span class="p">].</span><span class="nx">mouse_tracking_targets</span><span class="p">[</span><span class="s1">'#target'</span><span class="p">];</span>
|
|
|
|
<span class="kd">var</span> <span class="nx">startTime</span> <span class="o">=</span> <span class="nx">performance</span><span class="p">.</span><span class="nx">now</span><span class="p">();</span>
|
|
|
|
<span class="kd">function</span> <span class="nx">draw_frame</span><span class="p">()</span> <span class="p">{</span>
|
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<span class="kd">var</span> <span class="nx">timeElapsed</span> <span class="o">=</span> <span class="nx">performance</span><span class="p">.</span><span class="nx">now</span><span class="p">()</span> <span class="o">-</span> <span class="nx">startTime</span><span class="p">;</span>
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|
<span class="kd">var</span> <span class="nx">points</span> <span class="o">=</span> <span class="nx">mouseMovements</span><span class="p">.</span><span class="nx">filter</span><span class="p">((</span><span class="nx">x</span><span class="p">)</span> <span class="p">=></span> <span class="nx">x</span><span class="p">.</span><span class="nx">t</span> <span class="o"><=</span> <span class="nx">timeElapsed</span><span class="p">);</span>
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<span class="kd">var</span> <span class="nx">html</span> <span class="o">=</span> <span class="sb">``</span><span class="p">;</span>
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<span class="k">for</span><span class="p">(</span><span class="kd">var</span> <span class="nx">p</span> <span class="k">of</span> <span class="nx">points</span><span class="p">){</span>
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|
<span class="nx">html</span> <span class="o">+=</span> <span class="sb">`<div style="width: 3px; height: 3px; background-color: blue; position: absolute; top: </span><span class="si">${</span><span class="nx">p</span><span class="p">.</span><span class="nx">y</span> <span class="o">-</span> <span class="mf">1</span> <span class="o">-</span> <span class="nx">targetRect</span><span class="p">.</span><span class="nx">top</span><span class="si">}</span><span class="sb">px; left: </span><span class="si">${</span><span class="nx">p</span><span class="p">.</span><span class="nx">x</span> <span class="o">-</span> <span class="mf">1</span> <span class="o">-</span> <span class="nx">targetRect</span><span class="p">.</span><span class="nx">left</span><span class="si">}</span><span class="sb">px;"></div>`</span>
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<span class="p">}</span>
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<span class="nb">document</span><span class="p">.</span><span class="nx">querySelector</span><span class="p">(</span><span class="s1">'#target'</span><span class="p">).</span><span class="nx">innerHTML</span> <span class="o">=</span> <span class="nx">html</span><span class="p">;</span>
|
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<span class="k">if</span><span class="p">(</span><span class="nx">points</span><span class="p">.</span><span class="nx">length</span> <span class="o"><</span> <span class="nx">mouseMovements</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="nx">requestAnimationFrame</span><span class="p">(</span><span class="nx">draw_frame</span><span class="p">);</span>
|
|
<span class="p">}</span>
|
|
<span class="p">}</span>
|
|
|
|
<span class="nx">requestAnimationFrame</span><span class="p">(</span><span class="nx">draw_frame</span><span class="p">);</span>
|
|
|
|
<span class="p">},</span>
|
|
<span class="nx">data</span><span class="o">:</span> <span class="p">{</span>
|
|
<span class="nx">task</span><span class="o">:</span> <span class="s1">'replay'</span>
|
|
<span class="p">}</span>
|
|
<span class="p">}</span>
|
|
</code></pre></div>
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</div>
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<input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><label for="__tabbed_1_2">Demo</label><div class="tabbed-content">
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<p><div style="text-align:center;">
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<iframe src="../../demos/jspsych-extension-mouse-tracking-demo1.html" width="90%;" height="500px;" frameBorder="0"></iframe>
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</div></p>
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<p><a target="_blank" rel="noopener noreferrer" href="../../demos/jspsych-extension-mouse-tracking-demo1.html">Open demo in new tab</a></p>
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