BIOPAC® Systems, Inc. Logo

VR – Iowa Gambling Task

In this demo, participants follow the Iowa Gambling Task, a classic experiment in which participants choose between decks of cards with different payoffs. The skin conductance response before and after making a choice can be easily analyzed due to the marking of events from the experiment in the physiological record. In addition, the appearance of the decks, assigned probabilities of winning and losing, can be modified.

Usage Guidelines

This demo is also intended to serve as a tutorial on how to construct a virtual reality experiment. It can be fully modified and has been designed in a modular format with extensive comments to allow reuse of parts in other experiments. Code is written in the Python programming language and extensive support on programming with Python is provided in the software package and user forums. 3D models from the demo can be reused within the VR platform (only).

See More...

Details

This is one of many ADVANCED FEATURES for the selected Application. Scroll down for hardware options.

Objectives

  1. To use the Iowa Gambling Task template, a hypothesis testing tool modeled after the work of Bechara et al (1994).
  2. To record skin conductance before and after the choice.

Overview

Quote and graph taken from Bechara et al (2005):

 ‚The participants are given four decks of cards, a loan of $2000 facsimile US bills, and asked to play so as to win the most money. Turning each card carries an immediate reward ($100 in decks A and B and $50 in decks C and D). Unpredictably, however, the turning of some cards also carries a penalty (which is large in decks A and B and small in decks C and D). Playing mostly from decks A and B leads to an overall loss. Playing from decks C and D leads to an overall gain. The players cannot predict when a penalty will occur, nor calculate with precision the net gain or loss from each deck. They also do not know how many cards must be turned before the end of the game (the game in fact ends after 100 card selections).‚

Taken from: The Iowa Gambling Task and the somatic marker hypothesis: some questions and answers
A. Bechara, H. Damasio, D. Tranel and A.R. Damasio  TRENDS in Cognitive Sciences Vol.9 No.4 April 2005

Anticipatory SCR levels change as a function of the number of trials experienced and result in an increasing disparity between levels observed prior to selecting good vs. bad decks. Bechara et al have proposed that this change in somatic response occurs even before the participants have adequate conscious knowledge of the situation.

Data analysis

With minor customization, this demo application can be directly applied for research or teaching purposes. It allows the user to test the following:

  1. Are somatic responses different before and after good vs. bad decks?
  2. Are somatic responses different for more vs. less predictable decks (defined as low vs. high variance in outcome)?
  3. How do 1, 2 change as a function of time?

Support

Application Notes

Knowledge Base

Hardware Packages   |   VR – Iowa Gambling Task

Hardware Bundles are complete solutions for the specified application. Choose your preferred platform and bundle, then click "Request Pricing" to request an estimate, add/remove items, or complete purchase. If you have questions about specific items, click through to the product web page for details and specifications, or contact your Local Sales contact.

Wired

Spotlight On
free BIOPAC webinar

Enabling Mobile Eye Tracking with Screen-Based Stimuli

Join BIOPAC and Argus Science for a personal look at new Eye Tracking technology for Mobile and Screen-Based Participants. Learn how to utilize ETAnalysis StimTrac combining different types of eye tracking functionality into one tool.

Frazer Findlay from BIOPAC and Robert Wilson from Argus Science will review experiment setup and new safety protocols on how to record Eye Tracking while keeping safe from COVID-19.

Includes setup tips with best practices in the lab environment or in the field, a live demo, and Q&A.

Webinar is LIVE October 28th at 8:00 AM PT.

Register Now
Latest News

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

New Citations | How Olfaction affects Resting Brain Activity & More!

Smelling your Emotional State Our sense of smell delivers important information to our brains, such as whether or not food is bad, or reminding us of a pleasant memory (crisp, fall air, anyone?). This fMRI-based study recorded PPG using a Photoplethysmograph Transducer for MRI connected to a PPG100C-MRI Amplifier. A differential pressure transducer continuously recorded variations in […]

Read All
Request a Demonstration
Request a Demonstration