The autonomic nervous system is split between the sympathetic and parasympathetic systems and the ANS is responsible for the regulation of heart rate (Milana et. al. 2017). The effects on heart rate is a particularly interesting field to experiment in due to its versatility because there are many variables that can either increase or decrease heart depending on the amount and type of stimulus. In one case, it has been found that stimuli can affect cardiac responses in infants that were 15 weeks old (David et. al. 1982). In that experiment, it was found that stimulus speed also affected the responses and cardiac responses took time to return to baseline (David et al. 1982).
Knowing that stimuli can have an effect on the nervous system depending
Knowing that stimuli can have an effect on the nervous system depending