Expectation Of A Break And Rate Of Accumulation

Expecting a break in timing is assumed to cause attentional shifts, which would slow down the rate of pulse accumulation. In Figures 9.3 and 9.4, two rates of accumulation corresponding to two extreme levels of expectancy for a break are represented: accumulation is relatively slow or fast depending on a break being expected or not. Accumulation is fast when a break is not expected for the whole duration of a temporal production (A), or when it is no more expected after the break offset in trials with breaks (B in Figure 9.3, B j and B2 in Figure 9.4). Accumulation is slow when a break is expected, for example, during the prebreak period in trials with breaks.

The inferred relationship between the rate of accumulation and break expectancy suggests that the rate of accumulation itself could be manipulated by varying the level of expectancy for a break. One way of varying level of expectancy is to manipulate the degree of certainty about some event.

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