The mark consists of an artistic rendition of a brain, wherein the brain is featured in a yellow color. Extending outwardly from the left hemisphere of said brain is a floating procession of six blue orbs, wherein the first orb is positioned within the middle left-hemisphere of said brain. The second orb is positioned to the left-hand side of said first orb and said second orb is in a slightly raised position in comparison to said first orb. The third orb is positioned to the left-hand side of said second orb and said third orb is in an elevated position in comparison to said second orb. Furthermore said third orb directly touches the outer left most periphery of said brain. The fourth orb is positioned above and to the left-hand side of said third orb. The fifth orb is positioned directly above said fourth orb. The sixth orb is positioned above and to the right-hand side of said fifth orb. The aforementioned floating procession of orbs is graduated in size, wherein said first orb is the largest and said sixth orb is the smallest. To the right of said brain are the words "The Hyperbaric Brain Center" and underneath the words "The Hyperbaric Brain Center" are the words "of St. Petersburg", wherein each of the aforementioned words are featured in a shade of dark blue. The words "The Hyperbaric Brain Center" are featured in a typeface which is thicker and larger than the typeface of the words "of St. Petersburg".