in what ways is a human brain different from brains of cockroaches and flies .plz give me simple answer regarding english
Answers
Answered by
0
Many customers ask us about whether insects feel pain during their pest control treatments. Do flies feel pain? Do cockroaches feel pain? The science on the subject isn’t nearly as settled as you might think.
After all, pain as we know it is actually a complex neurological and emotional experience that can vary from person to person. Since pain is subjective on some level, scientists struggle with potential indicators of pain in animals. Behavioral changes may indicate something is amiss, such as when a dog becomes less social with its owners or when a cat stops eating. Discomfort in mice, rats, horses and rabbits can be evaluated on a“grimace scale” first developed to evaluate pain in children. When a rabbit is hurt, for example, you may see a stiffening of the whiskers, notice a narrowing of the eyes or observe it pinning back its ears.
To make matters more complicated, evolution discourages animals from displaying signs of weakness, since this makes them more vulnerable to attacks by predators. Since insects can’t make facial expressions to show us how they feel, are there any other ways to tell if bugs experience pain?
Do Flies Feel Pain? What About Other Insects?
Insect brains are far simpler than mammal brains. In many insects, these body parts are little more than dense nodes of neurons that process stimuli and control various parts of the body. However, insect brains still perform some of the same functions as their human counterparts. For instance, human brains have nociceptors that process and orchestrate the response to painful stimuli. While insects don’t have nociceptors, experiments have shown that they respond in the same manner as humans whose nociceptors have been activated.
In one experiment, fruit fly larvae which were poked with hot pins exhibited an immediate flight response. Scientists determined that this mechanism was due to a type of neuron that produced a response similar to nociception. However, it’s not clear whether this response can properly be called “pain”.
One entomologist points out that “mammals have a diverse response to pain, often avoiding use of the injured area and responding to different types of pain differently.” Experiments on fruit flies show a much different response: in some case, fruit flies rolled toward the thing that hurts them instead of away from it. The same experiment also showed that these insects have the same reaction, whether they are poked with a needle, a smoldering iron, blue light or hot water.
These studies give us no conclusive evidence to determine whether flies feel pain. What we do know is that insects can sense when they are in harm’s way and react to avoid risks that could cause damage. Although we can’t tell to what extent flies and other insects can sense prior injury or internal harm, their nervous systems are incapable of the emotional aspects of pain that we humans experience.
After all, pain as we know it is actually a complex neurological and emotional experience that can vary from person to person. Since pain is subjective on some level, scientists struggle with potential indicators of pain in animals. Behavioral changes may indicate something is amiss, such as when a dog becomes less social with its owners or when a cat stops eating. Discomfort in mice, rats, horses and rabbits can be evaluated on a“grimace scale” first developed to evaluate pain in children. When a rabbit is hurt, for example, you may see a stiffening of the whiskers, notice a narrowing of the eyes or observe it pinning back its ears.
To make matters more complicated, evolution discourages animals from displaying signs of weakness, since this makes them more vulnerable to attacks by predators. Since insects can’t make facial expressions to show us how they feel, are there any other ways to tell if bugs experience pain?
Do Flies Feel Pain? What About Other Insects?
Insect brains are far simpler than mammal brains. In many insects, these body parts are little more than dense nodes of neurons that process stimuli and control various parts of the body. However, insect brains still perform some of the same functions as their human counterparts. For instance, human brains have nociceptors that process and orchestrate the response to painful stimuli. While insects don’t have nociceptors, experiments have shown that they respond in the same manner as humans whose nociceptors have been activated.
In one experiment, fruit fly larvae which were poked with hot pins exhibited an immediate flight response. Scientists determined that this mechanism was due to a type of neuron that produced a response similar to nociception. However, it’s not clear whether this response can properly be called “pain”.
One entomologist points out that “mammals have a diverse response to pain, often avoiding use of the injured area and responding to different types of pain differently.” Experiments on fruit flies show a much different response: in some case, fruit flies rolled toward the thing that hurts them instead of away from it. The same experiment also showed that these insects have the same reaction, whether they are poked with a needle, a smoldering iron, blue light or hot water.
These studies give us no conclusive evidence to determine whether flies feel pain. What we do know is that insects can sense when they are in harm’s way and react to avoid risks that could cause damage. Although we can’t tell to what extent flies and other insects can sense prior injury or internal harm, their nervous systems are incapable of the emotional aspects of pain that we humans experience.
Similar questions