Hearing 2 Flashcards
What is binding?
Integrating sensory information with space (visual) and across time (hearing)
On what does temporal binding (hearing) rely on?
Memory > historical context of the sound. If it appears after silence, the silence is the context.
What is the process of grouping and segregating sounds called?
Auditory Scene analysis
What are the sound groups of ASA called? And how many are there?
auditory streams; stream segregation and stream integration
What’s the best technique of studying the auditory cortex in time?
EEG and MEG
How does the ERP technique work (4 steps=
- Present the stimulus many times
- Define the time of onset of stimulus as 0 TIME LOCKING
- Line up the 0s
- Average the ERPs together
What’s another way of calling ERP/ERF
evoked responses
What is long-latency
Activity occurring after around 50 ms following stimulus onset
What are the three main responses of ERP?
P1
N1
P2
They always occur no matter if we’re paying attention or not and represent activation in the auditory cortex.
Define N1
It’s the most prominent response during the first 200 ms > sensible to acousting features, represents memory and learning and attention
What are the other two responses and when do they occur?
N2: surprising stimulus
P3: when the surprised stimulus is task relevant
They occur with attention
What is context sensitivity?
When past stimuli have an effect on another stimulus
What is forward masking? What’s another name for it?
When the old stimulus leads to attenuation of the neural response for the second.
Another name is adaptation.
What is forward facilitation?
When the first sound is facilitating response to the second sound.
What does SOI stand for?
Stimulus onset interval
