Sentence examples for movements field from inspiring English sources

Using high-resolution GPS-tracking of movements, field observations and gut retention experiments, we quantify dispersal distances for small- and large-seeded fruits foraged by E. helvum during periods of colony population low (wet season) and high (dry season) in an urban and a rural landscape in the forest zone of Ghana.

It's just constant movement," Field told NPR. .

The range of movement vectors for which an SC neuron is recruited is called its movement field (Sparks et al. 1976; Ottes et al. 1986).

For a given saccade, the total number of spikes of a cell is determined by the amplitude and direction of that saccade according to its classical movement field description (Ottes et al. 1986 ; Eqs. 3 – 4 ; Figs. 2 and 5 ).

However, the properties of internal noise within the system (assumed to increase with activity levels; this is e.g. visible in the movement field scans of Fig. 2), a low spatial resolution in the peripheral retina, and a penalty for overshooting the target (as commands then have to cross hemispheres), require a tradeoff between movement duration and accuracy.

The slope of Eq. 10 is determined by a k = N k (R,Φ)/ R, in which N k (R,Φ) (the total number of spikes in the burst of cell k for the saccade) replaces the mean firing rate F k in the static movement field description of Eq. 3. Equation 10 holds for fast, as well as for extremely slow (e.g. blink-perturbed) saccades to the same target.

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It also accounts for the fact that cells encoding small saccades have movement fields extending over a much smaller amplitude range than cells recruited for large saccades.

The consequence of our simple formulation is (1) that each spike in the SC contributes a fixed, tiny movement vector to the saccade, and (2) that movement fields of SC cells are dynamic.

The model describes the mean firing rate of a given cell in the SC motor map for any saccade vector with amplitude R and direction Φ, and accounts well for the observed asymmetric shape of SC movement fields (e.g. Fig. 2a, b).

The model of Van Gisbergen et al. (1987) explains how a large, invariant population (Eq. 3) within a logarithmically compressed motor map (Eq. 4) can represent saccade vectors with the correct amplitude and direction throughout the oculomotor range, and accounts for the shape of SC movement fields without any further adjustment of parameters (Fig. 2).