کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2044106 1073401 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Single-Neuron Correlate of Change Detection and Change Blindness in the Human Medial Temporal Lobe
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
A Single-Neuron Correlate of Change Detection and Change Blindness in the Human Medial Temporal Lobe
چکیده انگلیسی

SummaryObservers are often unaware of changes in their visual environment when attention is not focused at the location of the change 1, 2, 3 and 4. Because of its rather intriguing nature, this phenomenon, known as change blindness, has been extensively studied with psychophysics 5, 6 and 7 as well as with fMRI 8, 9, 10 and 11. However, whether change blindness can be tracked in the activity of single cells is not clear. To explore the neural correlates of change detection and change blindness, we recorded from single neurons in the human medial temporal lobe (MTL) during a change-detection paradigm. The preferred pictures of the visually responsive units elicited significantly higher firing rates on the attended trials when subjects correctly identified a change (change detection) compared to the unattended trials when they missed it (change blindness). On correct trials, the firing activity of individual units allowed us to predict the occurrence of a change, on a trial-by-trial basis, with 67% accuracy. In contrast, this prediction was at chance for incorrect, unattended trials. The firing rates of visually selective MTL cells thus constitute a neural correlate of change detection.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 16, Issue 20, 24 October 2006, Pages 2066–2072
نویسندگان
, , , , ,