کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
918934 919858 2011 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new tool for assessing context conditioning induced by US-unpredictability in humans: The Martians task restyled
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
A new tool for assessing context conditioning induced by US-unpredictability in humans: The Martians task restyled
چکیده انگلیسی

Unpredictability of an unconditioned stimulus (US) typically produces context conditioning in animals and humans. We modified the Martians task – a computer game measuring learning of Pavlovian associations through conditioned suppression – for assessing context conditioning in humans. One between-subjects and one within-subjects study are reported. Both experiments comprised four conditions: a predictable (Paired) condition in which the conditioned stimulus (CS) signaled the US, a neutral condition (No-US), one unpredictable condition in which the CS did not signal the US (Unpaired) and another one in which only unsignaled, temporally unpredictable USs were presented (US-only). Results showed more contextual conditioned suppression in the unpredictable conditions compared to the predictable condition. In contrast, more cued conditioned suppression occurred in the Paired condition than in the Unpaired condition. Consistent with animal research, context conditioning was increased by unpredictability. These data support the Martians task as a promising tool to extend research on human context conditioning.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Learning and Motivation - Volume 42, Issue 1, February 2011, Pages 1–12
نویسندگان
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