Practical EEG AI generated Flashcards
Describe the two types of events in the EEG practical: ‘square’ and ‘rt’.
Square events correspond to the appearance of a green colored square in the display, while rt events correspond to the reaction time of the subject.
Define the Y-axis in EEG data plotting.
On the Y-axis, the different electrodes or channels are plotted.
How are Z-channels positioned on the head in EEG data? What does ‘Z’ stand for in the channel name?
Z-channels are located in the middle of the head. ‘Z’ stands for the midline.
What do the X and Y-axis represent in EEG data plotting?
X-axis represents frequency, and Y-axis represents the Log of the Power Spectral Density.
Do higher frequencies correspond to faster or slower waves in EEG data?
Higher frequencies correspond to faster waves.
Describe the purpose of frequency filters applied to EEG data in the examples provided.
The purpose of the filters is to focus on specific parts of the graph by limiting the frequency range displayed.
Describe the purpose of using filters in EEG data processing.
Filters are used in EEG data processing to remove unwanted frequencies, such as electrical interference or muscle tension, in order to enhance the quality of the data.
Define re-referencing in EEG analysis.
Re-referencing in EEG analysis involves changing the reference electrode to improve the signal quality and facilitate comparison between different data sets.
What is the purpose of re-referencing in EEG data analysis?
Re-referencing is used in EEG data analysis to standardize the reference point across different recordings, enabling meaningful comparisons between datasets.
How does the type of task and instructions given to participants influence the ERP components observed in EEG data?
The type of task and instructions given to participants can influence the timing and distribution of ERP components in EEG data, reflecting cognitive processes, sensory perception, and motor activities.
Describe the relationship between motor activity and brain sides in right-handed individuals.
Motor activity is seen on the opposite side of the brain, meaning left side for right-handed individuals.
Define ERP component differences in picture categories at the group level.
Differences in ERP components between picture categories are observed by comparing amplitude and latencies across various channels.
How does cognitive effort affect the amplitude in ERP components?
Higher cognitive effort leads to higher amplitude in ERP components.
Do differences in ERPs (amplitude, latency, location) provide insights into brain processing during the animal categorization task?
Yes, differences in ERPs can reveal information about brain processing during the animal categorization task, especially in relation to the type of task subjects performed (go/no-go).
Describe the timing of motor activity utilization during the experiment.
Motor activity is not utilized in the first 200 ms of the experiment, indicating that it is not used early on.
