7 Limbic System - Swenny Qs Flashcards
What s/sx accompany bilateral loss of the amygdala? What is this syndrome called?
Loss of normal stress response, increased oral exploratory behavior, hypersexuality; “Kluver-Bucy syndrome”
Destruction of which region can produce an animal that reacts with rage to trivial stimuli?
septal nuclei = “Septal rage”
What is the stria terminalis? What does it connect? Where is it?
The stria terminalis connects the amygdala with the hypothalamus and the septal nuclei, and can be seen in the floor of the lateral ventricles.
Which tract provides connections between limbic structures and the hypothalamus?
stria terminalis (connects the amygdala to the hypothalamus)
Which portion of the nervous system contains neurons that increase their firing rate only when the animal is in certain location in the environment?
hippocampus
The hippocampus is an area of archicortex (3 layered cortex) located at the medial aspect of both temporal lobes. The majority of input to the hippocampus comes from the:
entorhinal cortex;
most of the connections of the hippocampus are with the adjacent area of the parahippocampal gyrus, called the entorhinal cortex. These functions together in short-term memory.
The QUALITY of an odorant molecule is determined by:
a) the pattern of activity in substance-specific receptor cells.
b) the pattern of activity in quality-specific receptor cells.
c) the pattern of activity in a large population of receptor cells.
C - The pattern of activity in several populations of olfactory receptor cells in response to an odorant allow us to recognize a wide array of odors.
Which of the following is FALSE concerning the amygdala?
a) it has reciprocal connections with the septal nuclei
b) it has direct connection with the hippocampus
c) it has reciprocal connections with the hypothalamus
d) it is located deep to the portion of cortex known as the uncus
e) it receives primary olfactory input
b) It has NO direct connection with the hippocampus.
The amygdala is an almond-shaped nucleus located in the region of the uncus of the temporal lobe that is considered part of the limbic system. Which of the following is NOT true regarding the amygdala?
a) It receives input from the olfactory system.
b) Destruction of this nucleus results in exaggerated autonomic responses.
c) It has connections with the piriform cortex.
d) It is a site of generation of integrated autonomic, endocrine and behavioral response.
e) It has extensive connections with the hypothalamus.
b) there is usually a blunting of emotional responses including responses to stress and fear.
Destruction of the amygdala on both sides in an animal:
increases oral exploratory behavior (Klüver-Bucy)
Which one of the following tracts connects the amygdala with the septal nuclei by following the course of the lateral ventricle?
stria terminalis; Which one of the following tracts connects the amygdala with the septal nuclei by following the course of the lateral ventricle?
