Preserved Feedforward But Impaired Top-Down Processes in the Vegetative State
نویسندگان
چکیده
منابع مشابه
Response to Comment on “Preserved Feedforward But Impaired Top-Down Processes in the Vegetative State”
Wethank King et al. (1) for deconstructing our paper (2) showing impaired top-down processes in the vegetative state (VS). We hope our responses provide some useful clarifications. (i) Regarding the number of patients, it would have been disappointing not to have found a common abnormality in eight well-defined VS patients. If we had needed 50 patients to obtain significant differences, we woul...
متن کاملComment on "Preserved feedforward but impaired top-down processes in the vegetative state".
Boly et al. (Reports, 13 May 2011, p. 858) investigated cortical connectivity patterns in patients suffering from a disorder of consciousness, using electroencephalography in an auditory oddball paradigm. We point to several inconsistencies in their data, including a failure to replicate the classical mismatch negativity. Data quality, source reconstruction, and statistics would need to be impr...
متن کاملPreserved feedforward but impaired top-down processes in the vegetative state.
Frontoparietal cortex is involved in the explicit processing (awareness) of stimuli. Frontoparietal activation has also been found in studies of subliminal stimulus processing. We hypothesized that an impairment of top-down processes, involved in recurrent neuronal message-passing and the generation of long-latency electrophysiological responses, might provide a more reliable correlate of consc...
متن کاملObject segmentation by top-down processes
In cluttered scenes, some object boundaries may not be marked by image cues. In such cases, the boundaries must be defined top-down as a result of object recognition. Here we ask if observers can retain the boundaries of several recognized objects in order to segment an unfamiliar object. We generated scenes consisting of neatly stacked objects, and the objects themselves consisted of neatly st...
متن کاملImpaired thalamic functional Connectivity in Vegetative State Detected by fcMRI
Introduction: Vegetative state (VS) is defined by wakefulness without awareness of self or the environment. Resting-state functional connectivity magnetic resonance imaging (fcMRI) is a novel technique that has several potential advantages over task-activation functional magnetic resonance imaging (fMRI) in terms of its clinical applicability to VS subjects. Voxel-based analyses have been emplo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science
سال: 2011
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.1202043