Cognitive Neuroscience: Trickle-Down Theories of Vision
نویسندگان
چکیده
The visual cortex is not a passive recipient of information: predictions about incoming stimuli are made based on experience, partial information and the consequences of inferences. A combination of imaging studies in the human brain has now led to the proposal that the orbitofrontal cortex is a key source of top-down predictions leading to object recognition.
منابع مشابه
Logic as Marr's Computational Level: Four Case Studies
We sketch four applications of Marr's levels-of-analysis methodology to the relations between logic and experimental data in the cognitive neuroscience of language and reasoning. The first part of the paper illustrates the explanatory power of computational level theories based on logic. We show that a Bayesian treatment of the suppression task in reasoning with conditionals is ruled out by EEG...
متن کاملConcrete application of learning theories in public health
Introduction: Educational psychology researchers have examined learning from different perspectives and their findings for explaining learning phenomena have led to different theories.Each of these theories can provide principles, rules, and specific requirements for classrooms.This study aimed to provide some examples of applications of learning theories in public health. Methods: Some databa...
متن کاملHow does the cerebral cortex work? Development, learning, attention, and 3-D vision by laminar circuits of visual cortex.
A key goal of behavioral and cognitive neuroscience is to link brain mechanisms to behavioral functions. The present article describes recent progress toward explaining how the visual cortex sees. Visual cortex, like many parts of perceptual and cognitive neocortex, is organized into six main layers of cells, as well as characteristic sublamina. Here it is proposed how these layered circuits he...
متن کاملTop-Down Modulation of Human Early Visual Cortex after Stimulus Offset Supports Successful Postcued Report
Modulations of sensory processing in early visual areas are thought to play an important role in conscious perception. To date, most empirical studies focused on effects occurring before or during visual presentation. By contrast, several emerging theories postulate that sensory processing and conscious visual perception may also crucially depend on late top-down influences, potentially arising...
متن کاملAbnormal hippocampal miR-1b expression is ameliorated by regular treadmill exercise in the sleep-deprived female rats
Objective(s): The protective effect of regular running on sleep deprivation (SD)-induced cognitive impairment has been revealed. In this study, we focused on the effects of regular exercise, sleep deprivation and both of them together on the microRNA-1b (miR-1b) expression and their relation to the behavioral parameters and brain-derived neurotrophic factor (BDNF) expr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Current Biology
دوره 16 شماره
صفحات -
تاریخ انتشار 2006