Lecture 1

Question 1

What is cytoarchitectonics

Answer 1

Segmentation of the brain based on its microscopic appearance.

Question 2

Outline the process of TMS

Answer 2

• Stimulator containing coil of wire placed above scalp
• Brief pulse of electrical current fed through coil resulting in generation of magnetic field
• Magnetic field induces electrical field leading to neuronal excitation.

Question 3

What are some of the advantages of TMS

Answer 3

• Temporal resolution in ms range
• Virtual lesion in subject may be better defined than lesion in patient
• Short duration reduces risk of plasticity
• Repeated studies in same subject

Question 4

What are some of the drawbacks of TMS

Answer 4

• Only cortical areas accessible
• Spatial undersampling
• Auditory cortex stimulation issues (muscles)

Question 5

What are event-related oscillations?

Answer 5

Stimulus or task related changes in EEG oscillations, in terms of frequency or amplitude.

Question 6

What are Event-related potentials?

Answer 6

Waveforms defined in terms of latency relative to an event such as a sensory stimulus.