Summary Neuronal Networks and Behavior

A snapshot of the summary - Neuronal Networks and Behavior

• LC 1 How the brain works

• What is the difference between an action potential and an excitatory postsynaptic potential (EPSP)

  An action potential is all or nothing, can have only 1 amplitude and is short. An EPSP can be graded and is longer
• Name a few characteristics of a pyramidal cell

  Receive information from other neurons. They have elaborate dendrites. They will either depolarize or hyperpolarize
• How do sensory neurons release neurotransmitters?

  They receive the stimulus from the energy of the environment, leading to an intercellularr cascade that will change the membrane potential. The change in voltage will be translated into neurotransmitter release.
• There are 4 different types of receptor groups in sensory receptors, name them

  - Mechanical receptors
  - Chemical receptors
  - Photoreceptors
  - Thermal receptors
• What is a topographical arrangement

  The organization of information storage in the brain
• Name 2 important features of the sensory system

  - adapatation (a constant stimulus fades from consciousness
  - they can ducted contrasts and motion

• LC 2 The visual system part 1

• What is the connectivity pattern between rods, cones and bipolar cells?

  Many rods connect to only 1 bipolar cell
• Which mechanisms result in the light adaptation (3)

  Lateral connections by horizontal cells, bleaching/regeneration of photoreceptors and switching from rods to cones
• How can rods and cones signal different intensities of light

  By responding with graded inhibitory potential
• How is it called that we see an object and its background?

  Figure-ground dichotomy