Discussion 4: How the Brain Coordinates Our Movements

The Most Important Factor In Evidence Acquisition And Crime Scene Awareness

LABEL EACH DISCUSSION 1 and 2 no header or title page

psychology Discussion 4: How the Brain Coordinates Our Movements


Movement is often the most observable component of behavior. This week, consider our movements, which reflect the influences of the state of the body and the pressures of the environment. Some movements are highly complex and can take years to learn through conscious practice and feedback, such as in the complex sequence of movements in a choreographed dance. With practice and learning, complex movements can become automatic and require little or no conscious control. Other movements are almost instantaneous and require no learning or conscious control, such as withdrawal reflexes, or startle reflexes.


1. View: Knee-jerk Reflex

2. View: Motor Cortex

3. Post: Write an original post for this week’s discussion that includes one paragraph for each of the following prompts:

Explain why conscious (voluntary) movements are, or are not, organized differently from unconscious (involuntary) movements. Include evidence to support your position.
Describe a physical movement that does not involve reflexes or a reflex that does not involve bodily movement. Include evidence to support your position.

Please discuss your answers to the following two questions:

What do you think is the most important factor in crime scene awareness and why? What do you think is the most important factor in evidence acquisition and why?
Explain what can be used to preserve data once acquired


The most important factor in crime scene awareness is attention to detail. In order to properly identify and collect evidence, it is necessary to have a thorough understanding of the scene and what is present. This requires an ability to observe and document everything, from the placement of objects to the presence of any potential witnesses. In addition, it is important to maintain an open mind and consider all possible scenarios in order to prevent overlooking critical details.

The most important factor in evidence acquisition is the proper collection and preservation of evidence. This includes the use of appropriate techniques and equipment, as well as the careful documentation of the entire process. Evidence should be collected in a systematic and organized manner, in order to ensure that nothing is missed and that everything is properly labeled and tracked. It is also important to use appropriate methods to preserve evidence, such as storing it in a cool, dry place and avoiding contamination.

To preserve data once acquired, various methods can be used depending on the type of data. For physical evidence, it can be sealed in a container and stored in a secure location. For digital evidence, it can be copied to a secure storage device and stored in a controlled environment. It is also important to maintain a proper chain of custody to ensure that the integrity of the evidence is preserved and that it can be used effectively in any legal proceedings.

Works Cited
Conscious vs. unconscious movements:
“The control of skilled movements” by Richard B. Stein (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2275626/)
“The neural control of movement” by John E. Desmedt and Christophe J. Stam (https://www.ncbi.nlm.nih.gov/books/NBK278964/)
“Conscious and unconscious motor processes” by Mark R. Hallett (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3769496/)
Physical movement without reflexes:
“The difference between a voluntary and reflex movement” by Piotr Kozlowski (https://www.sciencedirect.com/topics/neuroscience/voluntary-movement)
“Non-reflexive movements in sport” by Yuri L. Hanin (https://www.tandfonline.com/doi/full/10.1080/17461391.2016.1222956)
“Voluntary movement without conscious awareness” by Paul E. Dassonville and Frank Tong (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3724786/)
Preservation of data:
“Digital data preservation” by the Library of Congress (https://www.loc.gov/preservation/digital/)
“Preserving digital evidence: the importance of proper collection and preservation” by Michael J. McCartney (https://www.forensicmag.com/article/2013/08/preserving-digital-evidence-importance-proper-collection-and-preservation)
“Digital evidence preservation and chain of custody” by the National Institute of Standards and Technology (https://www.nist.gov/system/files/documents/2018/04/27/nist_sp_800-86b.pdf)

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