BPK 105 Midterm: Module 4 - Objectives - Part 6
27 Apr 2018
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Module 4 - Objectives - Part 6
● List the components of the diencephalons and their functions.
thalamus- sends info to cerebral cortex, influences mood and pain perception
epithalamus-involved in response to odors
hypothalamus- involved in body temperature, hunger, thirst, controls secretions from pituitary
gland, Important autonomical and endocrine control center in the brain located beneath the
thalamus
● List the lobes of the cerebrum and state one function of each.
frontal lobe- voluntary motor functions, motivation, aggression, mood, smell reception
parietal lobe- receive and perceive sensory info- touch, pain, temperature, balance
occipital lobe- receiving and perceiving visual input
temporal lobe- smell and hearing sensations, PLAYS ROLE IN MEMORY
● Describe the sensory and association areas of the cerebral cortex.
primary sensory areas- where sensations are perceived
association areas- involved in the process of recognition
The primary somatic sensory cortex, or general sensory area
- located in the parietal lobe posterior to the central sulcus.
- Sensory fibers carrying general sensory input, such as pain, pressure, and temperature,
synapse in the thalamus, and thalamic neurons relay the information to the primary
somatic sensory cortex.
- Sensory fibers from specific parts of the body project to specific regions of the primary
somatic sensory cortex so that a topographic map of the body, with the head most
inferior, exists in this part of the cerebral cortex (figure 8.27).
- Other primary sensory areas include the visual cortex in the occipital lobe, the primary
auditory cortex in the temporal lobe, and the taste area in the insula.
Cortical areas = association areas
- Recognition
- For example, sensory action potentials originating in the retina of the eye reach the
visual cortex, where the image is perceived.
- Action potentials then pass from the visual cortex to the visual association area, where
the present visual information is compared to past visual experience (“Have I seen this
before?”).
- On the basis of this comparison, the visual association area “decides” whether the visual
input is recognized and judges whether the input is significant. For example, if you pass
a man walking down a street, you usually pay less attention to him if you’ve never seen
Document Summary
Describe the sensory and association areas of the cerebral cortex. primary sensory areas- where sensations are perceived association areas- involved in the process of recognition. The primary somatic sensory cortex, or general sensory area located in the parietal lobe posterior to the central sulcus. Sensory fibers carrying general sensory input, such as pain, pressure, and temperature, synapse in the thalamus, and thalamic neurons relay the information to the primary somatic sensory cortex. Other primary sensory areas include the visual cortex in the occipital lobe, the primary auditory cortex in the temporal lobe, and the taste area in the insula. For example, sensory action potentials originating in the retina of the eye reach the visual cortex, where the image is perceived. Action potentials then pass from the visual cortex to the visual association area, where the present visual information is compared to past visual experience ( have i seen this before? ).
