L04 Electroencephalography II

Alpha Rhythms in the Occipital Lobe
In this BSL Lesson, students will discover how the brain constantly receives sensory input and integrates the information before processing it. The students will record EEG data from the occipital lobe while performing a number of tasks. The system will record and display the raw EEG together with the alpha wave and alpha-RMS activity. Students will compare their baseline EEG with the data recorded during the different tasks.

Experimental Objectives

To record EEG from an awake, resting subject under the following conditions:

  1. Relaxed with eyes closed;
  2. Performing mental arithmetic with eyes closed;
  3. Hyperventilating (breathing quickly and deeply) with eyes closed;
  4. Relaxed with eyes open.

To examine the differences in the level of alpha rhythm activity during mental arithmetic and hyperventilation, compared to the control condition of eyes closed and relaxed.

Tasks Performed by the Student

BSL Lessons are designed to allow at least four students to record and save data in a normal lab period (60-90 minutes). Typically, labs work most efficiently with three or more students working together at each BSL station.

  • Record EEG data from the occipital lobe.
  • Lie down and relax with their eyes closed.
  • Perform a mental math problem.
  • Hyperventilate for two minutes.
  • Open their eyes and continue to relax.

Videos

BSL 4 L04 EEG II - Electroencephalography

Biopac Student Lab Student Download

Lesson Hardware

This lesson requires a Biopac Student Lab (BSL) System and the following hardware. If your BSL System does not include all hardware items, expand your system by selecting required items below. For more details, review the Lesson: L# BSL Lessons - see the Lab Manual or launch BSL; A# and H# BSL PRO Lessons, click the PDF link above to review full setup, recording, and analysis procedures.

Item Name Cart
EL503 Disp. Gen-purp electrode 100/pk Add to Cart
ELPAD Abrasive Pads 10/pk Add to Cart
SS2LB Lead set, shielded, BSL Add to Cart
GEL1 Electrode gel 50 g Add to Cart

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