Top-down and bottom-up processes during observation: Implications for motor learning

Top-down and bottom-up processes during observation: implications for motor learning.

Neurophysiological and behavioural research has linked observational practice (OP) to a mirroring mechanism encompassing the action-observation network (AON). Although, the original findings indicate that biological stimuli alone activate the AON, recent evidence has shown sensitivity to non-biological stimuli. Thus, the AON is suggested to be influenced by interacting bottom-up and top-down pr...

During category learning, top-down and bottom up processes battle for control of the eyes

Information in the visual environment is largely accessed through a series of fixations punctuated by saccades. Changes in fixation patterns in response to learning are well documented in studies of categorization, but the properties of the saccades that precede them and the role of visual salience in effecting eye movements remains poorly understood. This eye tracking study examines oculomotor...

Bottom-up, top-down

Top-down and bottom-up processes in speech comprehension.

Speech comprehension includes both bottom-up and top-down processes, and imaging studies have isolated a frontal-temporal network of brain areas active during speech perception. However, the precise role of the various areas in this network during normal speech comprehension is not yet fully understood. In the present fMRI study, the signal-to-noise ratio (SNR) of spoken sentences was varied in...

Bottom-Up Beats Top-Down

In PEPA, the calculation of the transitions enabled by a process accounts for a large part of the time for the state space exploration of the underlying Markov chain. Unlike other approaches based on recursion, we present a new technique that is iterative—it traverses the process’ binary tree from the sequential components at the leaves up to the root. Empirical results shows that this algorith...