If a researcher found that an ion channel opened when an inhibitory postsynaptic potential was delivered to the neuron, then the researcher should conclude that:
a. the channel is voltage-gated.
b. a coincidence occurred since hyperpolarization cannot cause channels to open.
c. the channel is ligand-gated.
d. the ion channel opens when depolarization occurs.
Ans: A
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Professor Ming studies the effects of trauma on mental health across the lifespan. She plans to conduct a study that includes participants from the following age ranges: 6-12, 13-19, 20-40, and 50-70. All of her participants will be from an area that experienced a natural disaster, such as a deadly hurricane or earthquake. Professor Ming will then look at symptoms of depression and anxiety in each of the age groups to draw conclusions about age-related differences in the processing of traumatic events. Which research design is best suited for this study?
A. Experimental B. Cross-sectional C. Longitudinal D. Sequential
The concept of degrees of freedom is associated with the ____
a. mean for a sample b. mean for a population c. variance for a sample d. variance for a population
Answer the following statements true (T) or false (F)
1. Karl Lashley discovered that by removing small sections of a rat's brain, he could completely erase its memory of a previously learned maze. 2. Karl Lashley discovered that maze learning tends to be localized to a small area in the left-brain hemisphere termed the Broca's area. 3. Physiological psychology was the forerunner of behavioural neuroscience. 4. Someone with damage to their Broca's area cannot understand spoken words. 5. Behavioural neuroscience is a field of psychology that attempts to understand the links between the mind and the brain.
Which of the following is a formal guideline for deciding whether objects or events belong to a concept class?
a. prototype b. conceptual rule c. connotative meaning d. lexigram