Which brain region is involved in top-down processing?

Sources of this modification have been identified in parietal cortex and in prefrontal cortex. Modification of early processing areas also occurs on the basis of prior knowledge about the predicted sensory effects of the subject’s own actions.

What regions in your brain determine the focus of your top-down attention?

We have learned that the function of any area of the cerebral cortex, including that of primary visual cortex, is subject to top-down influences of attention, expectation, and perceptual task.

Is sensory processing top-down?

All cortical and thalamic levels of sensory processing are subject to powerful top-down influences, the shaping of lower-level processes by more complex information.

What are top-down and bottom-up processes?

Bottom-up processing begins with the retrieval of sensory information from our external environment to build perceptions based on the current input of sensory information. Top-down processing is the interpretation of incoming information based on prior knowledge, experiences, and expectations.

Where does sensory processing take place in the brain?

All cortical and thalamic levels of sensory processing are subject to powerful top-down influences, the shaping of lower-level processes by more complex information. New findings on the diversity of top-down interactions show that cortical areas function as adaptive processors, being subject to attention, expectation, and perceptual task.

How are top down and bottom down influences related to sensory processing?

The construction of a subjective percept involves making the best sense of sensory inputs based on a set of hypotheses or constraints derived by prior knowledge and contextual influences. Conversely, the top-down expectations and hypotheses are set by feedforward information, the sensory evidence.

How are brain states affected by top down influences?

In this view, the brain goes through a succession of brain states, with each state serving as the source of top-down influences for the subsequent state. In this dynamic process, task requirements and hypothesis setting are updated by sensory evidence, which in turn causes cortical areas to execute different programs.

What are the subtypes of sensory processing disorder?

According to a leading paper on the topic, Sensory Processing Disorder can be categorized into three basic patterns or subtypes: Sensory Modulation Disorder, including sensory over-responsivity, sensory under-responsivity, and sensory seeking/craving.