When pursuit was elicited by a ramp stimulus, pursuit initiation was accompanied by catch-up saccades, which caused saccadic suppression.
Although the function of these enzymes is well understood, the biochemical stimulus for initiation of 5α-RI and II gene expression has not been described.
While re-entrant arrhythmias require a suitable substrate in order to be sustained, they also require a stimulus for initiation.
Continued signal transduction through the VEGF/VEGFR-2 pathway is a primary stimulus for initiation and maintenance of tumour angiogenesis (Ellis, 2004).
In addition to a multitude of protein antigens [ 32], an alternative stimulus for initiation of the autoimmune response has been proposed.
Reaction Time, the time between presentation of a stimulus and initiation of a response, is said to reflect psychomotor and processing speed; and is assessed with 1-choice and 4-choice stimulus conditions.
For example, seeing a pub retrieves an expectation that specific entry and purchasing behaviour will produce a drink for consumption, and this gestalt expectancy of the response-outcome chain retrieved by the stimulus promotes initiation of the entry and purchasing behaviour.
In addition, we encourage the use of the expression 'execution' for referring to the processes that irreversibly and causally seal the cell fate, and the term 'propagation' to indicate the processes that link primary (stimulus-dependent) RCD to the stimulus-independent initiation of a secondary RCD wave, including the release of DAMPs and the consequent inflammatory response.
DOI: http://dx.doi.org/10.7554/eLife.09358.002 Central dopamine transmission coordinates reinforcement learning, including recognition of reward-predictive stimuli and initiation of goal-directed movements.
For this, birds were presented with an initiation stimulus to start the actual test stimulus: once the centre amber light was illuminated (no time limit), a peck to this key resulted in one of the outer keys being illuminated in red for 15 s; a peck to this test stimulus was rewarded, followed by 200 s ITI.
If mechanical stimuli trigger searching, this noise should stimulate courtship initiation.
