We have two cards in the deck:

1.
{{c1::Sensory adaptation}} can {{c2::increase or decrease our receptors sensitivity to the stimulus.::do what?}}

2.
The opposite of sensory adaptation is {{c1::amplification}}.
This is UP regulation.

These statements cannot both be true

1. Issue in the first statement:
- Sensory adaptation is defined as the ability to increase or decrease receptor sensitivity to a stimulus.
- This suggests that sensory adaptation is capable of both upregulation and downregulation of sensory responses.

2. Issue in the second statement:
- amplification is defined as the opposite of sensory adaptation and is specifically described as upregulation.
- This implies that sensory adaptation must always be downregulation since its opposite is an increase in sensitivity.

In the MCAT sources, there are conflicting definitions of sensory adaptation as being both upregulation and downregulation or downregulation entirely. This should be noted in the extra section of that card.

However, the definition of sensory amplification is not controversial and our choice to just define sensory amplification as the opposite of adaptation does not make any logical sense since there is no functional opposite of sensory adaptation since it is defined as both upregulation and downregulation in our deck.

This is a big change to the content of this card but I think having logically inconsistent cards is worse. I personally would be more frustrated about having two opposing definitions in the same deck then having to learn a new short sentence for this card which is already pretty intuitive based on the term "amplification." Let me know what you guys think.

Sources:

KA:
https://www.khanacademy.org/test-prep/mcat/processing-the-environment/somatosensation/v/sensory-adaptation-and-amplification

UWorld:
Sensory adaptation (or neural adaptation) is a decreased responsiveness of a sensory neuron over time in response to a constant stimulus.

Kaplan:
discusses physiological (sensory) adaptation to light, and gives the example of both constriction and dilation while noting that it “generally raises the…threshold for sensory response.”

Just cleaning up for organization's sake; updated suggestion in tow