دانلود مقاله ISI انگلیسی شماره 153240
ترجمه فارسی عنوان مقاله

یکپارچگی حقیقتی جانبی از اطلاعات پیشگیرانه و برگشت پذیر از میان برداشته است انعطاف پذیری رفتاری

عنوان انگلیسی
Lateral habenula integration of proactive and retroactive information mediates behavioral flexibility
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
153240 2017 10 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Neuroscience, Volume 345, 14 March 2017, Pages 89-98

پیش نمایش مقاله
پیش نمایش مقاله  یکپارچگی حقیقتی جانبی از اطلاعات پیشگیرانه و برگشت پذیر از میان برداشته است انعطاف پذیری رفتاری

چکیده انگلیسی

The lateral habenula (LHb) is known to play an important role in signaling aversive or adverse events that have happened or are predicted by cues under Pavlovian conditions. In rodents, it is also required for behavioral flexibility when changes in reward outcomes signal that strategies should be changed. It is not known whether the LHb also controls appetitive behaviors when an animal is able to utilize external cues proactively to guide upcoming decisions. In order to test this, male Long–Evans rats were trained to switch between two arms of a figure eight maze based on the tone presented prior to the choice. Importantly, the tones were switched every three to six trials so rats were able establish a response pattern before being required to switch. This caused rats to rely on both proactive (tones) and retroactive information (reward feedback) to guide behavior. Inactivation of the LHb with the GABA agonists baclofen and muscimol impaired overall performance by increasing both errors when the tones are switched (switch errors) as well as on subsequent trials (perseverative errors) indicating that both proactive and retroactive information are utilized by the LHb to guide behavioral flexibility. Once a correct choice was made in a given block, LHb inactivated rats did not make more errors than controls. A control study revealed that the LHb is not required for tone or reward magnitude discrimination per se. These results demonstrate for the first time that the LHb contributes to behavioral flexibility through utilizing both proactive and retroactive information when performing appetitive tasks.