Neural Networks & Behavior
A basketball player shoots free throws every day. Over time, the movement feels smoother and more automatic. What brain process explains this change?
What is neuroplasticity?
A student can see the soccer ball clearly but struggles to judge where their body is while trying to kick it. Which brain lobe helps process body position and spatial awareness?
What is the parietal lobe?
At a scene, an investigator writes, “There are muddy footprints leading away from the door.” Is that an observation or an inference?
What is an observation?
A pile of paper sits in a room with plenty of air, but nothing hot enough to start burning. Which fire component is missing?
What is heat?
In a written explanation, the sentence “The fire most likely started near the outlet” is this part of a scientific argument.
What is a claim?
A neuron receives several messages telling it to fire and several messages telling it not to fire. The neuron only sends the signal if the “go” messages are strong enough after the “stop” messages are subtracted. What concept is being described?
What is signal integration/summation?
A person’s movements become shaky and poorly timed, even though their muscles still work. Which brain structure is most likely struggling?
What is the cerebellum?
At the same scene, an investigator writes, “The person ran out the door after stealing something.” Is that an observation or an inference?
What is an inference?
Before a wooden object bursts into flame, heat causes it to release flammable gases. What process is happening?
What is pyrolysis?
“The wall near the outlet had the deepest char” would be this part of a scientific argument.
What is evidence?
A student wants to grab their phone during class but stops themselves. Which kind of neural signal helped prevent the action?
What is an inhibitory signal?
A student makes a risky choice without stopping to think through consequences. Which brain lobe should have helped with planning and impulse control?
What is the frontal lobe?
A student’s forensic lab produces the exact same result for all four suspects. Why is that a weak test?
Because it does not distinguish between suspects or help solve the case.
A fire spreads faster after a door is opened. What did the open door likely add to the fire?
Oxygen-rich air/ventilation.
A student says a candle caused a fire because a candle was found in the room. What step are they missing in their argument?
Reasoning, they need to explain how the evidence supports the candle as the cause and compare it to other possible explanations.
A person stays up late under bright lights for several nights. By the end of the week, they feel alert later at night and tired during the school day. What is light acting as, and what does it signal?
Light acted as a timing signal for the SCN.
During your sheep brain dissection, you might have noticed a large smell-processing structure near the front/bottom of the brain, or a differently shaped, and placed, cerebellum.
What is an evolutionary adaptation?
A mystery has fingerprint evidence pointing to one suspect, but fiber evidence and chemical evidence point to someone else. What should the investigator do?
Compare all evidence patterns, consider alternative explanations, and avoid making a conclusion from only one clue or test.
A metal shelf gets hot on one side of the room and transfers heat to papers touching it. What type of heat transfer is this?
What is conduction?
A burned trash pile is found in the middle of a room, but the worst wall damage is near an outlet. Why might the trash pile not be the origin?
The trash pile may have burned after the fire spread. The deeper damage near the outlet is stronger evidence for the origin.
A disease slowly damages connections between neurons. At first, a person only forgets small things, but later they struggle with language, reasoning, and behavior.
What is a neurodegenerative disease?
A brain injury affects the structure that sends information between the left and right hemispheres. What structure is damaged, and what problem could result?
The corpus callosum is damaged. Communication between the two hemispheres could be disrupted.
A student says, “My lab worked once, so it is reliable.” Why is that not enough for a forensic investigation?
A reliable test should work consistently, have clear procedures, and produce results another investigator can use to reach a supported conclusion.
A fire leaves the deepest damage in one corner, lighter damage farther away, and smoke stains rising from that same corner. What can investigators infer from this pattern?
The fire likely started near the corner with the deepest damage because multiple patterns point back to that area.
Explain why both brain behavior and forensic conclusions require patterns instead of single pieces of information.
Behavior comes from patterns of activity across neural networks, not one neuron alone. Forensic conclusions come from patterns of evidence, not one clue alone. In both cases, isolated details can be misleading unless they are connected to a larger pattern.