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Cognitive Neuroscience Chapter 6: Attention Part 2
This deck covers key concepts from Chapter 6 of Cognitive Neuroscience, focusing on auditory and visual attention, including brain responses, ERP components, and hemispheric differences.
What is the auditory N1 potential? How was it discovered?
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Key Terms
Term
Definition
What is the auditory N1 potential? How was it discovered?
It’s the first dip in the negative of a waveform from at about 90ms post stimulus. waveform associated with attention. The attention effect highlights...
What are brainstem-evoked responses? Are they sensitive to attention or not?
brainstem invoked response are automatic like pupil dilations. Not sensitive to attention.
What does the P20-50 effect tell us about attention?
=‘s time it takes for auditory inputs to reach the cortex . In sylvan fissure, with very specific test when really paying attention (attention influen...
Which brain regions are related to the N1 and the P20-50 waveforms?
M20-50 effect in primary auditory cortex (sylvian fissure). N1 (180ms) seconday aud cortex
According to MEG studies, how early in the perceptual process does attention influence auditory perception?
20-50ms?
Does auditory attention affect the belt or the lateral parabelt region of Heschl’s gyrus?
Attention influences activity in lateral belt of the secondary auditory cortex; much less influence on activity in the primary auditory cortex.
Related Flashcard Decks
| Term | Definition |
|---|---|
What is the auditory N1 potential? How was it discovered? | It’s the first dip in the negative of a waveform from at about 90ms post stimulus. waveform associated with attention. The attention effect highlights the first or initial object which is shown to a participant in an ERP. This is the full blow detection of the stimulus |
What are brainstem-evoked responses? Are they sensitive to attention or not? | brainstem invoked response are automatic like pupil dilations. Not sensitive to attention. |
What does the P20-50 effect tell us about attention? | =‘s time it takes for auditory inputs to reach the cortex . In sylvan fissure, with very specific test when really paying attention (attention influences auditory cortex and influences its firing) |
Which brain regions are related to the N1 and the P20-50 waveforms? | M20-50 effect in primary auditory cortex (sylvian fissure). N1 (180ms) seconday aud cortex |
According to MEG studies, how early in the perceptual process does attention influence auditory perception? | 20-50ms? |
Does auditory attention affect the belt or the lateral parabelt region of Heschl’s gyrus? | Attention influences activity in lateral belt of the secondary auditory cortex; much less influence on activity in the primary auditory cortex. |
What is a mismatch negativity? What does this waveform suggest about how we perceive auditory information? | MMN The auditory system creates templates of expected sounds. When a new stimulus deviates from the template, a mismatch negativity waveform occurs. We perceive auditory info based on previous templates, patterns. ding ding ding grrr |
What hemispheric differences emerge during non-spatial auditory attention? | When attending for specific stimuli in the same location, activity occurs in frontal (especially frontocentral) brain areas. R.h for tonal info (upbeat ending to a question) |
At what point (in milliseconds) do ERP studies detect evidence of attention influencing visual perception? What is this ERP component called? Where in the brain does this component originate? | 80-140ms P1 or the P100 effect. on extra striate cortex and maybe a bit in prim visual cortex. initial perception |
What is cortical unfolding? Why is this useful for the study of visual attention? | blow up brain to see inside sulcus and the activity that exists inside them |
Is information presented in the lower part of the visual field represented above or below the calcarine fissue? | when down the perception is above calcariun issue when stimulus in upper visual field its below |
inhibition of return | it’s actually slower to return back to the place that the cue was first presented at |
What is supramodal attention? Think of a real-world example of this phenomenon. | the focusing of attention on stimulus info across multiple modalities. visual stimulus enhanced when in an auditory attended area |