An artifact is any kind of disruption or unwanted error that is seen while perceiving data not generated from the brain. Examples of such witnessed throughout this experiment included swallowing, blinking, perspiration, gazing, and head movement to name a few. Yes, I would include these in my investigation because they occur in everyone and therefore should be factored into the evaluations.
2.Alpha waves are indicated by a person who is awake and very much at ease. Depending if the eyes were open or closed, and whether the subject was using a certain area of her brain or not, either an increase or a decrease in alpha waves were seen. When the subject sat with her eyes open alpha waves were less pronounced due to more noise. However, when …show more content…
For instance, when the subject watched the video of the arm amputation, her heart rate, breathing and perspiration increased; because more neurons were firing and brain activity was increasing signals, sending messages to certain parts of the body, telling it how to respond. The brain waves mirrored these effects on the EEG. These reactions also caused the body to communicate through emotions. While watching this video an increase of activity was seen in the corrugator supercilii, as the subject constantly raised her eyebrows throughout in fear and surprise. Whereas, when the subject watched the tickling kitty video, her heart rate was lower, and perspiration was not present. This was seen on the EEG by lower amplitudes. The zygomaticus major muscle was the main muscle activated here, since the subject showed primarily a happy expression. The more stressed a person appears the more the corrugator supercilii muscle is activated, and the more GSR is elicited. Depending on where the person’s mind is at depends on the change in GSR. For instance, if a boy watched the amputation video, he may have found it interesting, and cool, so his heart rate may not have increased, or hands might not have started sweating as drastically. Compared to the girl, who was queasy and anxious to watch the video, with an accelerating heart rate, and insanely sweaty …show more content…
This set of events causes blood glucose, blood pressure and blood volume to increase, the immune system to become stop working as efficient, and energy to increase through the conversion of fats into glucose. Whereas undergoing acute stress, starts with the sympathetic nervous system. Here the hypothalamus shoots nerve impulses into the spinal cord, which then travels to the preganglionic sympathetic nerve fibers, and finally the adrenal medulla which promotes catecholamines such as epinephrine. One might experience a rise in blood pressure and heart rate, relaxation of the bladder, and glucose to enter into the
2.Alpha waves are indicated by a person who is awake and very much at ease. Depending if the eyes were open or closed, and whether the subject was using a certain area of her brain or not, either an increase or a decrease in alpha waves were seen. When the subject sat with her eyes open alpha waves were less pronounced due to more noise. However, when …show more content…
For instance, when the subject watched the video of the arm amputation, her heart rate, breathing and perspiration increased; because more neurons were firing and brain activity was increasing signals, sending messages to certain parts of the body, telling it how to respond. The brain waves mirrored these effects on the EEG. These reactions also caused the body to communicate through emotions. While watching this video an increase of activity was seen in the corrugator supercilii, as the subject constantly raised her eyebrows throughout in fear and surprise. Whereas, when the subject watched the tickling kitty video, her heart rate was lower, and perspiration was not present. This was seen on the EEG by lower amplitudes. The zygomaticus major muscle was the main muscle activated here, since the subject showed primarily a happy expression. The more stressed a person appears the more the corrugator supercilii muscle is activated, and the more GSR is elicited. Depending on where the person’s mind is at depends on the change in GSR. For instance, if a boy watched the amputation video, he may have found it interesting, and cool, so his heart rate may not have increased, or hands might not have started sweating as drastically. Compared to the girl, who was queasy and anxious to watch the video, with an accelerating heart rate, and insanely sweaty …show more content…
This set of events causes blood glucose, blood pressure and blood volume to increase, the immune system to become stop working as efficient, and energy to increase through the conversion of fats into glucose. Whereas undergoing acute stress, starts with the sympathetic nervous system. Here the hypothalamus shoots nerve impulses into the spinal cord, which then travels to the preganglionic sympathetic nerve fibers, and finally the adrenal medulla which promotes catecholamines such as epinephrine. One might experience a rise in blood pressure and heart rate, relaxation of the bladder, and glucose to enter into the