Gonzalo Urcelay
@gurcelay.bsky.social
Assistant Professor at University of Nottingham, interested in learning and memory.
Yes, that phenomenon is also called the "gap-filling effect". However the contiguity that @gershbrain.bsky.social refers to is (to me) a CS duration effect, because in the figure above a delay procedure was used. The manipulation is not about temporal closeness between two events (CS and US)
October 10, 2025 at 3:25 PM
Yes, that phenomenon is also called the "gap-filling effect". However the contiguity that @gershbrain.bsky.social refers to is (to me) a CS duration effect, because in the figure above a delay procedure was used. The manipulation is not about temporal closeness between two events (CS and US)
It is all dependent on parameters and preparations, what's amazing to me about the figure is that the shape of the function is always the same.
October 10, 2025 at 1:49 PM
It is all dependent on parameters and preparations, what's amazing to me about the figure is that the shape of the function is always the same.
It depends on who you ask, much of the evidence for contiguity comes experiments in which the trace interval is manipulated, to that the "delay" vs "trace" is the relevant comparison. But yes some of the wording in the Rescorla review takes on the view that you allude to
October 10, 2025 at 1:44 PM
It depends on who you ask, much of the evidence for contiguity comes experiments in which the trace interval is manipulated, to that the "delay" vs "trace" is the relevant comparison. But yes some of the wording in the Rescorla review takes on the view that you allude to
Mackintosh's figure (p 203) has a panel D in which contiguity (CS offset to US onset) does not follow the same inverted U pattern. As to why the inverted U, I take it that if the CS is too short it doesn't get processed and therefore less learning. Imagine a 3 ms tone and try to learn from it
October 10, 2025 at 12:06 PM
Mackintosh's figure (p 203) has a panel D in which contiguity (CS offset to US onset) does not follow the same inverted U pattern. As to why the inverted U, I take it that if the CS is too short it doesn't get processed and therefore less learning. Imagine a 3 ms tone and try to learn from it
I love this figure - it actually appeared first in Mackintosh's 1983 book and Rescorla adapted it - but I interpret it as showing a CS duration effect rather than proper contiguity (contiguity, that is the time between CS offset and US onset, is strong in all the examples by Rescorla)
October 10, 2025 at 12:06 PM
I love this figure - it actually appeared first in Mackintosh's 1983 book and Rescorla adapted it - but I interpret it as showing a CS duration effect rather than proper contiguity (contiguity, that is the time between CS offset and US onset, is strong in all the examples by Rescorla)
I looked into this two years ago and concluded that GPower cannot do this power calculation (2x2 W-S). Daniel Lakens has a shinny app that can do it (but there is a parameter [correlation between measures] which gives a lot of flexibility).
September 19, 2025 at 11:11 AM
I looked into this two years ago and concluded that GPower cannot do this power calculation (2x2 W-S). Daniel Lakens has a shinny app that can do it (but there is a parameter [correlation between measures] which gives a lot of flexibility).
Very interesting take, I had not seen this so thanks for sharing.
August 14, 2025 at 11:10 AM
Very interesting take, I had not seen this so thanks for sharing.
We want to (1) characterise the relationship between different anxiety-related behaviours and arousal states, and (2) causally determine the brain circuit mechanisms involved. Please share widely and get in touch with Carl or me if you are interested.
jobs.nottingham.ac.uk/vacancy.aspx...
jobs.nottingham.ac.uk/vacancy.aspx...
Job Vacancy at the University of Nottingham: Post Doctoral Research Associate/Fellow (Fixed term)
Applications from highly motivated and self-driven candidates are invited for the above position to work on the BBSRC-funded project ‘Determining the brain basis of heart rate variability during extin...
jobs.nottingham.ac.uk
August 13, 2025 at 2:55 PM
We want to (1) characterise the relationship between different anxiety-related behaviours and arousal states, and (2) causally determine the brain circuit mechanisms involved. Please share widely and get in touch with Carl or me if you are interested.
jobs.nottingham.ac.uk/vacancy.aspx...
jobs.nottingham.ac.uk/vacancy.aspx...
I was thinking of appetitive-aversive inhibitory interactions, unless you manage to use two outcomes which are qualitatively different but of the exactly same valence. Even then you could argue that they may inhibit each other as means of explaining interference. A long shot anyway.
August 8, 2025 at 9:52 AM
I was thinking of appetitive-aversive inhibitory interactions, unless you manage to use two outcomes which are qualitatively different but of the exactly same valence. Even then you could argue that they may inhibit each other as means of explaining interference. A long shot anyway.
You will probably need Konorski to get closer to the interaction between outcomes
August 8, 2025 at 9:25 AM
You will probably need Konorski to get closer to the interaction between outcomes