get_eb_times_segmag_diff

object of class <code><a rd-options="" href="/link/segmag?package=segmag&version=1.2.4" data-mini-rdoc="segmag::segmag">segmag</a></code>

segmag

object of class <code><a rd-options="" href="/link/segmag?package=segmag&version=1.2.4" data-mini-rdoc="segmag::segmag">segmag</a></code>.

segmag_substract

numeric value determining the critical cutoff for maxima in
segmentation magnitude

cutoff_max

numeric value determining the critical cutoff for minima in
segmentation magnitude

cutoff_min


Specific function when calculating event boundaries for the difference of
two segmag objects (segmag - segmag_substract). Returns the times of event
boundaries that are defined as the center of local maxima (minima) in
segmentation magnitude that are higher (lower) than a critical cutoff max/min values.
The critical cutoff max/min values should be determined with the
<code><a rd-options="" href="/link/bootstrap_critical_cutoffs?package=segmag&version=1.2.4" data-mini-rdoc="segmag::bootstrap_critical_cutoffs">bootstrap_critical_cutoffs</a></code> function.


Contains functions that help to determine event
boundaries in event segmentation experiments by bootstrapping a critical
segmentation magnitude under the null hypothesis that all key presses were
randomly distributed across the experiment. Segmentation magnitude is
defined as the sum of Gaussians centered at the times of the segmentation
key presses performed by the participants. Within a participant, the maximum
of the overlaid Gaussians is used to prevent an excessive influence of a
single participant on the overall outcome (e.g. if a participant is pressing
the key multiple times in succession). Further functions are included, such
as plotting the results.

Frank Papenmeier

Determine Event Boundaries in Event Segmentation Experiments

get_eb_times_segmag_diff function

object of class <code><a rd-options='' href='segmag'>segmag</a></code>

object of class <code><a rd-options='' href='segmag'>segmag</a></code>.


Specific function when calculating event boundaries for the difference of
two segmag objects (segmag - segmag_substract). Returns the times of event
boundaries that are defined as the center of local maxima (minima) in
segmentation magnitude that are higher (lower) than a critical cutoff max/min values.
The critical cutoff max/min values should be determined with the
<code><a rd-options='' href='bootstrap_critical_cutoffs'>bootstrap_critical_cutoffs</a></code> function.


get_eb_times_segmag_diff: Retrieve event boundary times for a difference of segmag objects

Description

Usage

Arguments

Value

See Also