Search results
Without this, you will be unable to recognise deterioration in the patient’s neurological condition and will not be able to react appropriately. When used correctly, it alerts medics and nurses to a deterioration in a patient’s neurological status.
- 1MB
- 51
- Sensory Receptors
- Structural Receptor Types
- Functional Receptor Types
- Sensory Modalities
- Gustation
- Olfaction
- Disorders of The Olfactory System: Anosmia
- Audition
- Equilibrium
- Somatosensation
Stimuli in the environment activate specialised receptor cells in the peripheral nervous system. Different types of stimuli are sensed by different types of receptor cells. Receptor cells can be classified into types based on three different criteria: cell type, position, and function. Receptors can be classified structurally based on cell type and...
The cells that interpret information about the environment can be either (1) a neuron that has a free nerve ending, with dendrites embedded in tissue that would receive a sensation; (2) a neuron that has an encapsulated ending in which the sensory nerve endings are encapsulated in connective tissue that enhances their sensitivity; or (3) a speciali...
A third classification of receptors is by how the receptor transduces stimuli into membrane potential changes. Stimuli are of three general types. Some stimuli are ions and macromolecules that affect transmembrane receptor proteins when these chemicals diffuse across the cell membrane. Some stimuli are physical variations in the environment that af...
Ask anyone what the senses are, and they are likely to list the five major senses—taste, smell, touch, hearing, and sight. However, these are not all the senses. The most obvious omission from this list is balance. Also, what is referred to simply as touch can be further subdivided into pressure, vibration, stretch, and hair-follicle position, base...
Only a few recognised submodalities exist within the sense of taste, or gustation. Until recently, only four tastes were recognised: sweet, salty, sour, and bitter. Research at the turn of the 20th century led to recognition of the fifth taste, umami, during the mid-1980s. Umami is a Japanese word that means “delicious taste,” and is often translat...
Like taste, the sense of smell, or olfaction, is also responsive to chemical stimuli. The olfactory receptor neurons are located in a small region within the superior nasal cavity (Figure 13.10.3). This region is referred to as the olfactory epithelium and contains bipolar sensory neurons. Eacholfactory sensory neuronhas dendrites that extend from ...
Blunt force trauma to the face, such as that common in many car accidents, can lead to the loss of the olfactory nerve, and subsequently, loss of the sense of smell. This condition is known as anosmia. When the frontal lobe of the brain moves relative to the ethmoid bone, the olfactory tract axons may be sheared apart. Professional fighters often e...
Hearing, or audition, is the transduction of sound waves into a neural signal that is made possible by the structures of the ear (Figure 13.10.4). The large, fleshy structure on the lateral aspect of the head is known as the auricle. Some sources will also refer to this structure as the pinna, though that term is more appropriate for a structure th...
Along with audition, the inner ear is responsible for encoding information about equilibrium, the sense of balance. A similar mechanoreceptor—a hair cell with stereocilia—senses head position, head movement, and whether our bodies are in motion. These cells are located within the vestibule of the inner ear. Head position is sensed by the utricle an...
Somatosensation is considered a general sense, as opposed to the special senses discussed in this section. Somatosensation is the group of sensory modalities that are associated with touch, proprioception, and interoception. These modalities include pressure, vibration, light touch, tickle, itch, temperature, pain, proprioception, and kinaesthesia....
- Anna Chruścik, Kate Kauter, Louisa Windus, Eliza Whiteside
- 2021
Oct 30, 2023 · This article provides the steps of a neurological examination of a patient's sensory system, as well as relevant anatomy. Click now to learn more at Kenhub!
Apr 8, 2014 · The Dynamic Affect Recognition Test (DART) is a novel tablet-based test designed to quickly assess emotion comprehension with ecologically valid stimuli.
Sensation is the activation of sensory receptor cells at the level of the stimulus. Perception is the central processing of sensory stimuli into a meaningful pattern. Perception is dependent on sensation, but not all sensations are perceived. Receptors are the cells or structures that detect sensations.
Jun 25, 2024 · What Is Recognition, Why Is It Important, and How Can It Be Measured? The Processes Underlying Recognition. Multiple Convergent Methods of Measuring Recollection and Familiarity. The Behavioral Properties of Recollection and Familiarity. The Role of the Medial Temporal Lobes. Placing Recollection and Familiarity in a Broader Theoretical Framework.
People also ask
What is a recognition test?
How flexible are recognition tests?
Are recognition tasks useful in identifying memory deficits?
What is a Graphesthesia test?
Does a recognition test require memory for a specific study context?
What are high-precision recognition tasks?
This chapter discusses the means by which the brain perceives and recognizes stimuli. Studies of patients with disorders of recognition suggest that the brain recognizes meaningful stimuli by using a multicomponent sequential process.
