But the trials were ridden with problems: customers complained of short battery life, frequent disconnections and display freezes.
The male house sparrow's display freezes the action at the point where the male is moving between the bow and the spring: the legs, neck, and body are stretched upwards, but the tail is still held pointing upwards and spread, while the wings are outstretched and slightly downwards.
It is shown by both previous studies (Rudy and O'Reilly, 2001) and our data that animals without pre-exposure or pre-exposed to an irrelevant context do not display freezing behaviors to the conditioned context.
In voles that displayed freeze response, traveled distance dropped when the owl appeared, reaching zero during owl Attack, where locomoting time, trip-length and inter-stop distance were also zero, and there was only one stop (the incidence of freezing).
Specifically, fear experienced rats displayed freezing (an index of fear) in response to their partner's USVs.
However, when the tone CS came on, the SFC rats immediately displayed freezing and USV that persisted through the entire 8 min of testing (Fig. 2A).
Because mice displayed freezing behavior in response to fear, it is possible that mice do not show high freezing even if they remember the conditioning chamber (context test) or the tone (cued test).
(D ) Representative velocity trace for ChR2 mouse displaying freezing during photostimulation and elevated locomotion/jumping during the post-stimulation period.
For instance, the display of freezing is plastic.
In support of this notion is the finding that temporarily inactivating the MGN of receiver rats (via targeted infusions of lidocaine, a voltage-gated Na+ channel blocker) during 3 unsignaled footshocks, did not affect their ability to display postshock freezing and USV but did prevent the sender's USV from affecting their behavior in the paired experiments.
