week 2.1 SENSATION, SENSATION, SENSATION.

Play an AI-generated podcast conversation about this lesson

Which form of energy is associated with light in the context of sensory transduction?

Electromagnetic energy (correct)

Potential energy

Thermal energy

Kinetic energy

What type of energy is involved in the transduction of noise into neural signals?

Chemical energy

Elastic potential energy

Acoustic energy (correct)

Nuclear energy

Which of the following best describes the function of receptors in sensory organs?

Converting environmental energy into action potentials (correct)

Protecting the sensory organs from environmental energy

Enhancing the central nervous system's response to environmental energy

Producing environmental energy within the sensory organs

What is the primary role of receptors in the sensory system?

Detecting and responding to specific types of environmental energy Signup and view all the answers

How do receptors contribute to the sensory transduction process?

By converting environmental energy into neural signals for the central nervous system Signup and view all the answers

What is the main physiological process underlying sensory experience?

Action potential firing in neurons Signup and view all the answers

How would you best describe the role of refractory periods in neurons?

They prevent the backward propagation of action potentials Signup and view all the answers

What is the effect of charge reaching a specified threshold in a neuron?

It activates voltage-gated ion channels on the neuron membrane Signup and view all the answers

Which aspect of neural coding refers to the changes in firing rate of neurons?

Changes in firing rate of neurons Signup and view all the answers

In the context of neural coding, which variable represents the N of neurons firing?

Number of neurons firing Signup and view all the answers

Among the variables related to neural coding, which one indicates the temporal dynamics of neuronal activity?

Patterns of neurons firing across time Signup and view all the answers

What is the relationship between firing rate and stimulus intensity based on the information provided?

Firing rate increases correspond to more intense stimuli Signup and view all the answers

How are ranges of stimulus intensity detected by different sets of neurons?

Different neurons respond to different ranges of stimulus intensity Signup and view all the answers

In the context of neural coding, how are changes in firing rate of neurons relevant?

Changes in firing rate indicate adaptation to specific stimulus intensities Signup and view all the answers

What is the primary reason for the different 'feel' of sensory information in different modalities?

The activation of different neurons based on the modality of sensory information Signup and view all the answers

In the context of sensory perception, what is the role of the 'labelled line' concept?

It represents the direct physical connection between sensory receptors and the cortex Signup and view all the answers

Which process enables the perception of any stimulation of the optic nerve as visual information?

The direct physical connection between optic nerve receptors and the cortex Signup and view all the answers

Which of the following is a common characteristic of synaesthesia?

Trainable Signup and view all the answers

In synaesthesia, which cross-modal experience is most common?

Color-grapheme Signup and view all the answers

Synaesthesia is most likely to be found in which of the following populations?

Epileptic populations Signup and view all the answers

What is one of the theories proposed to explain why some people are synaesthetic?

Memory theory Signup and view all the answers

What is the primary reason for synaesthetic experiences?

LTM associations Signup and view all the answers

Which theory proposed in the text suggests that some people use language to describe their experiences in a cross-modal manner?

Metaphor theory Signup and view all the answers

How is fine localisation achieved in humans for vision and somatosensation?

Via orderly, spatial arrays of receptors projecting to an organised map in the cortex Signup and view all the answers

Which modality permits localization via differences in stimulus intensity or in the timing of stimulus arrival between two organs?

Audition Signup and view all the answers

What is the primary difference between what's in the physical world and our perception thereof according to the text?

Receptors in sensory organs Signup and view all the answers

What is the primary function of a retinotopic map?

To provide a 1:1 mapping of the retina to the primary visual cortex Signup and view all the answers

What process enables the perception of any stimulation of the optic nerve as visual information?

Retinotopic mapping Signup and view all the answers

What is the primary difference between retinotopic maps and somatosensation mapping?

Retinotopic maps refer to the mapping of stimuli from the retina to the primary visual cortex, while somatosensation is the mapping of sensations from the skin to the sensory strip in the motor cortex Signup and view all the answers

At which functional level of the CNS does the integration of some sensory information begin?

Spinal cord Signup and view all the answers

Which level of the CNS directly receives some inputs without going through subcortical integration?

Cortex Signup and view all the answers

What is the primary function of sensory integration in the nervous system?

Interpreting sensory information and determining appropriate response Signup and view all the answers