Cognitive Neuroscience and Brain Imaging

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What is the primary focus of cognitive neuroscience?

The study of human behavior
The development of brain imaging techniques
The study of the nervous system
The study of the brain's production of thoughts and behaviors (correct)

What is the primary principle behind functional magnetic resonance imaging (fMRI)?

Measuring changes in brain temperature
Injecting radioactive dye into the bloodstream
Tracking brain activity by measuring changes in blood flow (correct)
Recording brain electricity

What is the primary application of Positron Emission Tomography (PET) scans?

Studying brain structure
Recording electrical brain activity
Monitoring brain temperature
Analyzing brain metabolism and blood flow (correct)

What is a key advantage of Electroencephalography (EEG)?

Capability to study rapid brain reactions (C) Signup and view all the answers

What is the primary difference between Magnetoencephalography (MEG) and EEG?

MEG measures magnetic fields, while EEG measures brain electricity (B) Signup and view all the answers

What do both EEG and MEG have in common?

They both detect neural activity (A) Signup and view all the answers

What is the main purpose of a scatter plot?

To show the relationship between two quantitative variables (A) Signup and view all the answers

What type of variables are typically represented on a scatter plot?

Quantitative and quantitative (C) Signup and view all the answers

What is the term for a two-dimensional statistic?

Application C (A) Signup and view all the answers

What is represented on the x-axis of a scatter plot?

The response of individual ω to the variable X (A) Signup and view all the answers

What is the term for the variable on the y-axis of a scatter plot?

Second marginal statistic (A) Signup and view all the answers

What is the purpose of a contingency table?

To classify individuals into groups based on two categorical variables (B) Signup and view all the answers

What is the objective when a scatter plot exhibits a non-linear shape?

To seek a functional relationship between the variables (C) Signup and view all the answers

What represents the mean point with coordinates (X̄, Ȳ )?

The centroid (D) Signup and view all the answers

When can the linear correlation coefficient be used as a descriptive measure?

When the scatter plot indicates that the data points are scattered about a line (C) Signup and view all the answers

What should you watch for when using the linear correlation coefficient?

Outliers and influential observations (D) Signup and view all the answers

What can happen if outliers and influential observations are present in the data?

The sample means and sample standard deviations will be affected (A) Signup and view all the answers

What does a high correlation between two variables not necessarily imply?

A causal relationship between the variables (D) Signup and view all the answers

What does a scatter plot provide?

Immediate qualitative insights into the relationship between X and Y (D) Signup and view all the answers

What is the purpose of identifying the functional relationship between X and Y in a scatter plot?

To derive more quantitative insights into the relationship between X and Y (A) Signup and view all the answers

What is the term for the collection of points in an orthogonal coordinate system?

Scatter plot (B) Signup and view all the answers

What is the shape of the scatter plot when there is a strong linear correlation between X and Y?

Elongated around a line (C) Signup and view all the answers

What is the purpose of determining the equation of the regression line?

To determine the line that best fits the data (B) Signup and view all the answers

What is indicated by a highly dispersed scatter plot?

No apparent relationship between X and Y (D) Signup and view all the answers