Facts about human brain PPT

Place Cells. As illustrated above, a typical hippocampal place cell fires in a single region in the apparatus — this is the cell’s ‘firing field’. Place cells were discovered by John O’Keefe of University College, London in the early 1970s. John O’Keefe and Lynn Nadel suggested that thousands of place cells, covering the surface of any space, acted as a mapping system, and suggested that the hippocampus as a whole created a “cognitive map”. In support is the general finding after hippocampal damage rats are terrible at spatial problem solving and appear lost in space. The general sense is that the firing of each place cell signals recognition of a specific place in a familiar environment.

Grid Cells were roughly 30 years later in the laboratory of Edvard and May-Britt Moser in Trondheim, Norway1. Grid cells are found in the entorhinal cortex, a region on the posterior wall of the rat’s cerebral hemisphere. In the figure to the right, the entorhinal cortex is depicted in yellow. (this is a lateral view; viewed from the back EC is larger and pancake-shaped).

The grid-cell and place-cell maps in the figure below were made with identical recording and analytic methods. In some ways the patterns of the two cell types are similar: in each the spatial signal is strong — that is, each exhibits strong “location-specific firing”. But the grid cell pattern is different. Rather than a single ‘firing field’ in the apparatus, there are many fields (or ‘bumps’). Additionally, the firing fields form a regular pattern of triangles (or hexagons). The signal from a single grid cell is complex. It cannot be a place recognition signal, because there are many places. The firing of a grid cell (on a bump) signals the distance and angle to other firing locations. Grid cell firing appears to be a signal that can be used for measuring displacement distances and direction. In other words, a ‘metric’.

John Kubie

You might also like

Human Brain PowerPoint Template Backgrounds
Human Brain PowerPoint Template Backgrounds ...
Human Brain Activity PowerPoint Template Backgrounds
Human Brain Activity PowerPoint Template Backgrounds ...
Synbiotics - Natural Prebiotics and Probiotics Supplement for Women and Man - Best Immune System Booster - Pearls with Fiber for Digestive Health Advantage - Lactose Intolerance Pills- Ultimate Nutrition Proactive Cleanser Support - Unique Gifts for Your Digestive System & Intestinal Health...
Health and Beauty (Natural Tonus&Power)
  • BELIEVE IT OR NOT, The Human Body Contains More Bacteria Living Inside Than Individual Cells and ONE of the BEST Kinds of Microorganisms We Can Have Flourishing...
  • PROBIOTICS FIX IMMUNITY, DIGESTION & ALLERGIES. They are PERFECT For BOOSTING IMMUNE SYSTEM and SUPPLIES ENERGY In An AMAZING WAY as well as Enables the Brain...
  • PERFECT AND VERY UNIQUE PRODUCT COMPARED TO OTHERS. Scientifically Tested and Approved. 100% Satisfaction Guaranteed OUR Unique Natural PRO+PRE Biotic is a Great...
  • TRYING TO DECIDE BETWEEN A PROBIOTIC AND PREBIOTIC SUPPLEMENT Regimen? Consider These Prebiotics Facts: PREBIOTICS Should Increase The Number And Activity of Bifidobacteria...
  • A COMBINATION OF PROBIOTIC STRAINS MAY HAVE DIFFERENT EFFECTS THAN A SINGLE PROBIOTIC STRAIN. It is Not Currently Known If There Are Synergistic or, Perhaps...
Pyrite Merkaba Star Reiki Natural Sparkling Crystal Palm Stone Star Metaphysical Healing Mineral Solar Plexus Chakra Energy Stone 8 Point Merkaba Star Sacred Geometry Star - 1PCS
Home (HQRP-Crystal)
  • You will receive one of the Pyrite Merkaba Star similar to the one in the listing, the size and the color of the star may slightly vary as well due to the fact that...
  • Pyrite, also known as Fool s Gold , has nothing foolish about itself. This mineral of mysterious gleaming beauty and hidden flame sparkles to life when struck against...
  • Pyrite as a talisman has a unique protective power, it draws the energy from the Earth into the person s aura and creates there a shield against negative energy...
  • Pyrite is a shielding, protective stone and is considered to be ideal to carry or wear as a talisman or amulet to draw away danger and harm. It is particularly helpful...
  • (Attention! The information is provided solely for informational purpose and cannot be considered as a substitute for advice from a health care professional. Kindly...

Q&A

avatar
What is a fact about the brain?

The human brain is made out of a yellowish gray matter and a juicy white matter.

Copyright © . All Rights Reserved