Physiology - Central Nervous System Part 2

(Нормальная Физиология - центральная нервная система)
An experiment using a live frog to study the EFFECTS OF DIFFERENT STRENGTHS OF STIMULUS ON THE TIME OF REFLEX.

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Part 2 - Temporal summation

Definition: Temporal or sequential summation is an effect generated by a single neuron as way of achieving action potential.

In this part, Dr Dima applied two types of stimulus: strong (around 0.1 M) and weak (around 0.02 M) acids. Then,we can compare the time taken for the frog to react on each of the stimuli.

Note that in this part,the area of stimulation should be considered as the constant variable, whereas the strength of acid is the main manipulated variable.

*Early warning: If you are not strong enough just don't watch. Don't try to raise the issue of 'animal rights' here, because this frog had sacrificed its life for the sake of science.

Part 1: Introduction -
http://www.youtube.com/watch?v=8TrFb-HWJqg

Part 2: Temporal summation -
http://www.youtube.com/watch?v=1LSVZ1tlFQ4

Part 3: Spatial summation -
http://www.youtube.com/watch?v=yGk6IjCjeew

Part 4: Removal of the receptors and its effects on the reflex arc -
http://www.youtube.com/watch?v=ia-_AR0AdQg

Part 5: Removal of the spinal cord and its effects on the reflex arc -
http://www.youtube.com/watch?v=A3hSVS5Td7s

Category:

Science & Technology

Tags:

• physiology
• CNS
• central
• nervous
• system
• frog
• hang
• time
• reflex
• RSMU
• russia
• moscow
• центральная
• нервная
• система
• физиология

[wangguan2007]

well done, somatic reflex is funny shit

[RicardoSabong]

ho molto fame

[streamline6667555]

wish to have same physiology class in Cracow