carbon dioxide (CO2)
Carbon dioxide is the most important stimulus to breathe.
no
ACTH
CO2
In a person without COPD the drive to breath is high carbon monoxide. In a person with COPD the drive to breath is low O2.
Authours and social activists provided the stimulus.
balance
Increase of CO2
conditioned reinforcer
CO2 -- carbon dioxide
Tropism is defined as the movement, generally by a plant, due to outside stimuli; direction of sunlight being a primary stimulus. Chemotropism is defined as oriented growth or movement in response to a chemical stimulus.
Primary motives are necessary for survival. These would include biological needs like thirst, hunger and the avoidance of pain or death. Stimulus motives are needs for stimulation that are not survival based. These would include physical contact, exploration and curiosity.