Feet are universally highly sensitive to tickling. Thousands of nerve endings called Meissner's corpuscles are present. Skin on feet is tougher than most other body parts
Alpha waves are neural oscillations in 8-12 Hz frequency range. Discovered by Hans Berger in 1924, also known as Berger's waves. Generated by thalamic pacemaker cells in humans. Recorded predominantly from occipital lobes during wakeful relaxation
Theta waves generate neural oscillations in the brain for cognition and behavior. Two types exist: hippocampal theta in mammals and cortical theta in humans. Hippocampal theta occurs in 6-10 Hz range during active behavior and REM sleep. Cats and rabbits show lower theta frequencies (4-6 Hz)
Located in medial aspect of cerebral cortex, above corpus callosum. Divided into Brodmann areas 23-33, including anterior and posterior regions. Forms part of limbic lobe, receiving inputs from thalamus and neocortex
The cerebrum is the largest part of the brain, containing cerebral cortex and subcortical structures. It develops from the forebrain prenatally, with dorsal telencephalon becoming cerebral cortex. The cerebrum is divided into two C-shaped hemispheres separated by longitudinal fissure. The cerebral cortex folds into gyri and sulci in larger mammals
Left-brain theory suggests one side controls language and logic. Right-brain theory attributes creativity to the other side. Both sides of brain communicate through corpus callosum